From mmaceira at lanl.gov Wed Jul 8 10:49:43 2009 From: mmaceira at lanl.gov (Monica Maceira) Date: Wed, 8 Jul 2009 11:49:43 -0600 Subject: [iris-bulk] GSA 2009 Topical Session on slow-slip events Message-ID: <7F528E2D-136F-4AD6-8F45-EA62A8B74CCA@lanl.gov> Dear Colleagues We'd like to encourage you to submit an abstract for GSA 2009 session T75. "Slow Slip and Non-Volcanic Seismic Tremor in Cascadia and Beyond: Observations, Models, and Hazard Implications." This session aims to explore the many different slow-slip and tremor phenomena that have recently been discovered in an ever-increasing number of localities. There is a focus on the Cascadia region, as the meeting will be taking place in the middle of the Cascadia subduction zone in Portland, OR, October 18-21. We look forward to your contribution to this important and timely topic. Abstract submissions are due August 11, 2009: http://gsa.confex.com/ gsa/2009AM/cfp.epl Best Regards Monica, Carene, Evelyn, and Justin ---- T75. "Slow Slip and Non-Volcanic Seismic Tremor in Cascadia and Beyond: Observations, Models, and Hazard Implications." Conveners: M. Maceira & C. Larmat (Los Alamos), E. Roeloffs and J. Rubinstein (USGS) The recent discovery of non-volcanic tremor and slow aseismic slip has resulted in a flurry of research activity across many geologic and geophysical disciplines. The two phenomena are often coupled and recurrent, in which case they are called Episodic Tremor and Slip (ETS). Current research suggests that non-volcanic tremor and slow slip are both members of a family of unusually slow earthquakes. These slow earthquakes occur in diverse tectonic environments and appear to have the same mechanism as ordinary earthquakes, but differ from normal earthquakes in their source location and moment-duration scaling. Unlike ordinary earthquakes, which grow explosively in size with increasing duration, slow earthquakes, whether large or small, grow at a constant rate. The hazard implications of tremor and slow-slip are also quite important. Tremor and slow-slip are typically found on the deep extension of faults, just below the region of the fault that produces the more familiar, and dangerous, "ordinary" earthquakes. Thus, the slip from these slow events could load, or even trigger, large earthquakes in the shallower portion of the fault zone. For this reason alone they merit intense study. Their recent discovery in different tectonic environments around the globe (Japan, Cascadia, New Zealand, Costa Rica, Taiwan, California) also points out that there is much that we still have to learn about the conditions propelling rupture on deep faults, and that earthquake science is a field where further fundamental discoveries may require the synergy of observational and material Earth science. Recent deployment of hundreds of seismometers, GPS stations, borehole strainmeters, and other geophysical instrumentation as part of the Earthscope experiment has enabled identification of nearly 40 isolated ETS events along the Cascadia forearc. ETS events are observed from northern California to Vancouver Island, Canada. However, many questions remain unanswered as the underlying cause of these newly identified events, or their impact on general Cascadia seismicity, their distribution and periodicity along strike, and their impact on the depth extent of the eventual megathrust rupture. Given its location in Portland, the center of the Cascadia subduction zone, the 2009 GSA meeting is the perfect venue to gather those involved in conducting research related to this newly discovered branch of the earthquake family. *************************************************** Monica Maceira Los Alamos National Laboratory EES-17, MS D443 Los Alamos, NM 87545 VOICE:(505)6672404 / FAX:(505)6678487 -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Fri Jul 10 12:17:30 2009 From: irismail at iris.washington.edu (IRIS) Date: Fri, 10 Jul 2009 12:17:30 -0700 Subject: [iris-bulk] Workshop: Tectonics and Earthquake Hazard in and near Syria Message-ID: <34BF95C2-BE7A-4390-B050-8FB99107946E@iris.washington.edu> The Arab School for Science and Technology (ASST) and the National Earthquake Center (NEC - Syria) invite you to participate to the workshop on "Active Tectonic Studies and Earthquake Hazard Assessment in Syria and Neighboring Countries", to be held from 17 to 19 November 2009 at ASST, Damascus, Syria. The official language of the workshop is English. The workshop web site, http://www.arabschool.org.sy/earthquake/, includes the list of invited speakers and forms to apply to attend the workshop and to submit an abstract for a presentation. Both forms are due on 15 August. The Dead Sea Fault System (DSFS) ranks among the largest strike-slip fault systems in the world and represents a key element of the eastern Mediterranean seismotectonic framework. The fault system accommodates ~5 mm/year of left lateral motion between the Arabian and African (Sinai) plates along much of its length. Intracontinental deformation (Palmyrides, Abdel-Aziz and Sinjar structures), caused by plate boundary processes extending into the plate interior, dominates the past and present tectonics of Syria and surrounding areas. Recent debates concerning the slip rate and kinematics of the DSFS attest to the limited understanding of it as an active and seismogenic system. In particular, there has been debate about whether the active plate boundary is mainly represented by the northern DSFS or whether active deformation is partially concentrated offshore to the west. The workshop aims to bring together earth scientists working on aspects of seismology, active tectonics, space geodesy, remote sensing, paleoseismology and geodynamics, to address issues concerning the tectonic evolution of the eastern Mediterranean and northern Arabian plate, with results relevant to tectonic and seismotectonic modeling, lithospheric structure, earthquake hazard evaluation, and exchanging related ideas and techniques. The Workshop is the second in the ASST's Earth Science series and will include contributions from a core group of internationally recognized geoscientists working with the Syrian National Earthquake Center (NEC) and coming from prestigious Universities and research centers in USA, France, United Kingdom, Italy and Turkey. Additional information about earthquakes in Syria is available from the NEC web site, http://www.nec.gov.sy/. The NEC web sited includes access to a searchable database of hypocenters through August 2007 and PDFs of the national earthquake bulletin with station locations, local hypocenters, and associated arrival times through December 2008. -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Wed Jul 15 14:12:06 2009 From: irismail at iris.washington.edu (IRIS) Date: Wed, 15 Jul 2009 14:12:06 -0700 Subject: [iris-bulk] (Job) post-doctoral research position in seismology at UW-Madison Message-ID: <527A7919-59D6-4D93-8257-D034D89E7C9F@iris.washington.edu> A post-doctoral research position in seismology is expected to become available in the Department of Geoscience, University of Wisconsin- Madison, beginning in fall 2009. The position is a full-time 9-month appointment, with the opportunity of continuation, as a Post-Doctoral Research Associate. The position will be subject to state-mandated furlough of 2 days per each 3 months of appointment. The successful applicant will participate in two or more projects, including research on subduction zones, volcanic earthquakes, and geothermal site characterization. The expected starting salary is in the range $41,000 to $43,000, depending on qualifications and experience. The position is most appropriate for candidates not more than 2 years past the Ph.D. Completion of all Ph.D. requirements is necessary at the time of appointment. The starting dates for the positions are somewhat flexible, but preferably between August 15, 2009 and September 15, 2009. Applicants should submit a resume, statement of research interests and experience, and names of three references via mail to Professor Clifford Thurber Department of Geoscience University of Wisconsin-Madison 1215 W. Dayton St. Madison, WI 53706 USA or via email to thurber at geology.wisc.edu. Screening of applications will begin as applications are received; the position will remain open until filled. NOTE: Unless confidentiality is requested in writing, information regarding the names of applicants must be released upon request. Finalists cannot be guaranteed confidentiality. UW-Madison is an equal opportunity/affirmative action employer. We promote excellence through diversity and encourage all qualified individuals to apply. -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Mon Jul 20 08:46:44 2009 From: irismail at iris.washington.edu (IRIS) Date: Mon, 20 Jul 2009 08:46:44 -0700 Subject: [iris-bulk] (Job) Software Engineer (SP) Message-ID: <2CCA7588-D66D-40F4-94BE-8CDD28401A76@iris.washington.edu> The Incorporated Research Institutions for Seismology (IRIS) seeks an experienced Software Engineer to become a core part of the data product development team at the IRIS Data Management Center (DMC) in Seattle. This position will be responsible for developing scientific product creation software in collaboration with a product specialist and the seismological community. An additional responsibility will be to maintain and enhance a modern, heterogeneous data product archive system. The product archive will consist of a vast number of images, plots, and annotated data documents managed with a Java/Axis/MySQL catalog infrastructure. This catalog system has a sophisticated search and presentation layer that will require ongoing development. Work in this area directly serves the NSF EarthScope program. The successful Software Engineering candidate should have at minimum a Bachelor?s degree in Computer Science, Engineering, or an Earth Science. The candidate should possess skills and experience with object-oriented programming languages and concepts (Java, C#, C++), web and web services technologies (J2EE, Axis, SOAP, Javascript), database interfaces and schemas (SQL, JDBC, ORM) and be comfortable in a Unix shell environment. Experience with MySQL and Oracle is desirable. Experience with MATLAB? makes for a strong candidate. Experience with scientific data and/or data visualization is a plus. The successful candidate should have strong communication, presentation, and teamwork skills. The IRIS DMC, located near the University of Washington, receives earthquake and seismological data from a variety of Data Collection Centers and is responsible for the long-term archive and distribution of all IRIS-generated data. IRIS DMC receives data from institutions all over the world and provides open services and software to the public for discovery and dissemination of this data. IRIS is a university consortium with more than 100 institutional members. IRIS is funded by the National Science Foundation to support facilities for research in seismology and the earth sciences. For more information on IRIS and EarthScope, please consult http://www.iris.edu and http://www.earthscope.org. Qualified candidates should submit (electronically) a letter of interest that highlights their qualifications as they pertain to this position as well as their resume by Friday, July 31, 2009 to , using the subject line ?Software Engineer SP?. Please include the names and contact information of two references familiar with your abilities. IRIS is an equal opportunity employer. From irismail at iris.washington.edu Mon Jul 20 08:46:56 2009 From: irismail at iris.washington.edu (IRIS) Date: Mon, 20 Jul 2009 08:46:56 -0700 Subject: [iris-bulk] (Job) Software Engineer (WS) Message-ID: <4F0E1A1E-7CAD-4E0B-8FC6-F7DE45F3E38A@iris.washington.edu> The Incorporated Research Institutions for Seismology (IRIS) seeks a Software Engineer to further the development of a web-service architecture at the IRIS Data Management Center (DMC) in Seattle. The successful Software Engineering candidate should have a minimum of 5 years of programming experience, with current skills in information technology including: object oriented programming languages (Java, C+ +, C#), web services (XML, SOAP, WSDL, REST, XML Schema), servlets (JSP, Struts, Tomcat) and database access and persistence interfaces (JDBC, Oracle, Hibernate). Past experience with modern web client technologies (Portlets, DWR, AJAX, Google APIs) is a plus. We will also consider the experience in the following areas as positive qualifications for a candidate: workflows, semantic web, distributed service technologies (e.g. CORBA), experience with UNIX operating systems such as Solaris, Linux, and OS X, experience with MATLAB?, and experience in earth sciences. The successful candidate should have strong communication, presentation, and teamwork skills. The IRIS DMC, located near the University of Washington, receives earthquake and seismic data from a variety of seismological data centers and is responsible for the long-term archive and distribution of all IRIS-generated data. IRIS DMC receives data from institutions all over the world and provides open services and software to the public for discovery and dissemination of this data. IRIS is a university consortium with more than 100 institutional members. IRIS is funded by the National Science Foundation to support facilities for research in seismology and the earth sciences. Qualified candidates should submit (electronically) a letter of interest that highlights their qualifications as they pertain to this position as well as their resume by Friday, July 31, 2009 to , using the subject line ?Software Engineer WS?. Please include the names and contact information of two references familiar with your abilities. IRIS is an equal opportunity employer. From james at dtm.ciw.edu Tue Jul 21 08:19:20 2009 From: james at dtm.ciw.edu (David James) Date: Tue, 21 Jul 2009 11:19:20 -0400 (EDT) Subject: [iris-bulk] 2009 Fall AGU, Session U19: Scientific Progress in Geophysics from 25 Years of Sharing Data and Resources Message-ID: <3820.69.139.232.121.1248189560.squirrel@mail.ciw.edu> Dear Colleagues, We invite you to contribute to the 2009 Fall AGU session U19: Scientific Progress in Geophysics from 25 Years of Sharing Data and Resources. Session U19 focuses on the pivotal role that organized sharing of resources and data has played and continues to play in advancing geophysical research. The session has broad goals: a celebration of the success of IRIS's 25 years of shared instrumentation and open data exchange, an appraisal of how similar community efforts can facilitate exciting new opportunities for research across all disciplines of geophysics, and a clarion call to highlight the scientific successes that have blossomed from this approach. ---------------------------------- ---------------------------------- U19: Scientific Progress in Geophysics from 25 Years of Sharing Data and Resources Twenty-five years ago the U.S. seismological community committed itself to the notion that sharing seismological data and instrumentation would dramatically advance research and education in seismology. The collective undertaking that grew from that commitment proved remarkably successful, not in the least because vast improvements in instrumentation went hand-in-hand with the establishment of a global network, the acquisition of a large communal pool of portable instrumentation, and agreements on data archiving and free data exchange that were revolutionary at the time. The explosion of resources and open data that flowed from the IRIS consortium transformed the science of seismology, revolutionized our holistic understanding of the structure and dynamics of our planet, and ushered in an exciting new era of cross-disciplinary research. A strong interconnection has developed between advances in seismological research and complementary progress in marine geophysics, mineral physics, geodynamics, tectonophysics, geodesy, geochemistry, petrology, and planetary science. Rapidly evolving integrative research has impacted areas as varied as tsunami monitoring, episodic tremor and slip, deep earth structure, and climate-change induced ice sheet seismicity, and it is a principal cornerstone of EarthScope. The successful IRIS model has since been widely emulated by others, including the COMPRES, CIG, and GEON consortia, and it challenges other research communities to embrace the principles of shared resources and open data exchange. We welcome contributions from all geophysical and related disciplines that address the critical role played by organized sharing of data and resources in advancing geophysical research and influencing future directions. ------------------------------ ------------------------------ Please note that the deadline for electronic abstract submission is September 3rd, 2009. For additional information see http://www.agu.org/meetings/fm09 or contact one of the conveners. We look forward to seeing you in San Francisco. Conveners: David James. james at dtm.ciw.edu Guust Nolet. nolet at geoazur.unice.fr Rhett Butler. rhett at iris.edu Robert Liebermann. robert.liebermann at sunysb.edu From irismail at iris.washington.edu Tue Jul 21 10:35:06 2009 From: irismail at iris.washington.edu (IRIS) Date: Tue, 21 Jul 2009 10:35:06 -0700 Subject: [iris-bulk] 2009 Fall AGU Special Session: S11 Marine Seismology Message-ID: <5D43A641-EB10-4466-A35D-41908ADA8D9C@iris.washington.edu> Dear Colleagues, We invite you to contribute to the 2009 Fall AGU session S11: Marine Seismology and Bottom Interacting Ocean Acoustics. This session focuses on new techniques for acquiring, processing and interpreting marine seismic data. Applications span the disciplines of petroleum exploration, global seismic structure, climate change, seafloor geological processes, marine biology and ocean acoustics. The motivation for this session is to bring these diverse communities together to share their interdisciplinary expertise. Topics include: 1) the relationship between seismology, storms at-sea and climate, 2 ) marine seismology, ocean infra-gravity waves and the Earth's hum, 3) long-range T-phase propagation, 4) ocean bottom seismic surveys targeting upper mantle structure, 5) deploying AUVs as teleseismic sensors, 6) multi-channel surveys of ridges and continental margins, 7) permanent ocean bottom seismic cables, and 8) monitoring marine mammals with ocean bottom seismometers. Passive monitoring observatories and controlled source experiments (for example, seismic reflection and refraction methods) will be addressed. The frequency band of interest spans 1mHz to 1KHz. Please note that the deadline for electronic abstract submission is September 3rd, 2009. For additional information see http://www.agu.org/meetings/fm09 or contact one of the conveners. We look forward to seeing you in San Francisco. Co-Conveners: Ralph Stephen, rstephen at whoi.edu Arthur Weglein, aweglein at Central.UH.EDU Satish Singh, singh at ipgp.jussieu.fr Will Wilcock, wilcock at u.washington.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From mmoorkamp at ifm-geomar.de Wed Jul 22 01:43:21 2009 From: mmoorkamp at ifm-geomar.de (Max Moorkamp) Date: Wed, 22 Jul 2009 10:43:21 +0200 Subject: [iris-bulk] 2009 Fall AGU Special Session S10: Joint Inversion of Seismic and Multi-disciplinary Geophysical Data Message-ID: <4A66D129.7060908@ifm-geomar.de> Dear Colleagues, We invite you to contribute to the 2009 Fall AGU session S10: Joint Inversion of Seismic and Multi-disciplinary Geophysical Data. Description: Multi-disciplinary geophysical experiments are now becoming common tools to provide detailed pictures of the structure of the deep mantle and shallow subsurface. Joint inversion provides a mathematical framework for simultaneously analyzing multiple different datasets. Although seismic datasets with different resolution, such as surface wave dispersion, receiver functions, and teleseismic arrival times, have been successfully inverted jointly, many questions remain: Which types of data should be inverted together? How to balance their influence in the inversion? Jointly inverting data that are sensitive to different parameters, such as seismic and magnetotelluric data can provide more detailed information but requires assumptions about rock properties and raises the question of how to provide a meaningful relationship between different datasets? We invite submissions from geophysics and geochemistry that address issues related to joint inversion, joint modeling, data analysis and rock properties. Please note that the deadline for electronic abstract submission is September 3rd, 2009. For additional information see http://www.agu.org/meetings/fm09 or contact one of the conveners. We look forward to seeing you in San Francisco. Conveners: Max Moorkamp, mmoorkamp at ifm-geomar.de Estelle Roux, estelle at cp.dias.ie Amir Khan, amir at gfy.ku.dk From tkhong at yonsei.ac.kr Wed Jul 22 19:52:04 2009 From: tkhong at yonsei.ac.kr (Tae-Kyung Hong) Date: Thu, 23 Jul 2009 11:52:04 +0900 Subject: [iris-bulk] 2009 Fall AGU Special Session S15: Studies of North Korean Explosions and Implications for Nuclear Explosion Monitoring Message-ID: <003001ca0b40$8fe73ff0$afb5bfd0$@ac.kr> Dear colleagues, We would like to invite your contributions to the 2009 fall AGU session S15 "Studies of North Korean Explosions and Implications for Nuclear Explosion Monitoring". Description: Monitoring of nuclear explosions has been successfully conducted with international collaborations. Prompt responses from science communities to nuclear explosions are highly demanded for humankind welfare. North Korea has recently conducted two consecutive nuclear explosion tests in 2006 and 2009. These tests are the first ones conducted in the 21st century, and are well recorded by dense, modern regional and global seismic networks. The acquisition of high quality data provides us a unique chance to test the scientific knowledge accumulated for more than 50 years. The session is opened for live communication in science communities to discuss the implications of observed data, outstanding questions and research demands for further advance in nuclear monitoring. We welcome any studies related to the nuclear monitoring issues which may include source properties, seismic discrimination, event locationing, magnitude estimation, numerical modeling of seismic waveforms, waveform features at all distances, infrasound monitoring, influence of crustal structures on seismic waves, and comparisons between nuclear explosions. Please note that the abstract submission due date is 3 September 2009. Additional information can be found from http://www.agu.org/meetings/fm09 or the conveners. Conveners: Tae-Kyung Hong, Yonsei University KOR, tkhong at yonsei.ac.kr William Walter, Lawrence Livermore National Laboratory USA, bwalter at llnl.gov Jiakang Xie, Air Force Research Laboratory USA, jiakang.xie at gmail.com Howard Patton, Los Alamos National Laboratory USA, patton at lanl.gov From irismail at iris.washington.edu Thu Jul 23 07:42:55 2009 From: irismail at iris.washington.edu (IRIS) Date: Thu, 23 Jul 2009 07:42:55 -0700 Subject: [iris-bulk] AGU Session: Seismicity and Tectonics in the Columbia Basin Message-ID: AGU Special Session S17: Earthquake Swarms, Seismicity, and Tectonics in the Columbia Basin, Washington The seismicity of the Columbia Basin is typified by the occurrence of earthquake swarms in the Columbia River Basalts. The relationship of current seismicity to the processes forming the anticlines and faults of the Yakima Fold belt is unclear, and seismic hazard assessments of the region are dependent upon models of these potential earthquake sources. From January through June of 2009, a swarm of over 1000 microearthquakes (the largest reaching magnitude 3) has occurred at depths less than 1-2 km. This area does not appear to be associated with the anticlines or known faults, but deformation of the ground surface has been detected with INSAR coincident with the swarm?s location. Abstracts are being solicited which help to describe and understand the processes that generate these earthquake swarms, and the relationships of seismicity to geologic structures, current deformation, and regional tectonics. Conveners: Alan Rohay, Joan Gomberg http://www.agu.org/meetings/fm09 -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Thu Jul 23 07:42:59 2009 From: irismail at iris.washington.edu (IRIS) Date: Thu, 23 Jul 2009 07:42:59 -0700 Subject: [iris-bulk] AGU Session: Many Faces of Slow Slip, Tremor, & Earthquakes Message-ID: <124F3DFD-78C9-403D-AC32-64A5120A73B8@iris.washington.edu> AGU Special Session T03: The Many Faces of Slow Slip, Tremor, and Earthquakes! Great interest has recently focused on observations and implications of deformation processes that give rise to slow fault slip, tremor and earthquakes in plate boundary settings. This session posits that revealing the key processes and conditions that control the generation of these coupled phenomena requires investigating them in widely diverse environments and with a diversity of interdisciplinary approaches. In this session we will examine this diversity, with presentations of studies of the coupled phenomena of slow slip, tremor, and earthquakes not only in plate-boundary environments, but also in the laboratory, computer models, landslides, glaciers, and other natural systems. The session solicits abstracts that address these topics using a variety of approaches within specific environments or that compare and contrast the phenomena observed in different settings. Conveners: Joan Gomberg, Roland Burgmann, Paul Bodin http://www.agu.org/meetings/fm09 -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Thu Jul 23 11:39:33 2009 From: irismail at iris.washington.edu (IRIS) Date: Thu, 23 Jul 2009 11:39:33 -0700 Subject: [iris-bulk] 2009 Fall AGU Special Session S06: Innovations and Advances in Earthquake Early Warning Systems Message-ID: <5D4F7999-2637-4B27-A055-2A886A110D0C@iris.washington.edu> Dear colleague, Our apologies if this announcement reaches you more than once. We would like to draw your attention to a special session on earthquake early warning at the 2009 AGU Fall Meeting and invite you to submit an electronic abstract until September 3rd, 2009, at http://www.agu.org/meetings/fm09/ . Session description: S06 Innovations and Advances in Earthquake Early Warning Systems Around the World Earthquake early warning systems provide rapid earthquake detection and notification prior to significant ground shaking. Operational warning systems in Japan, Taiwan, Turkey, and Romania now provide seconds to tens of seconds of warning prior to damaging shaking. New systems are also being evaluated and tested in Europe, Asia, and the Americas. In this session, we invite scientists, engineers, and social scientists working on all aspects of earthquake early warning to share perspectives, techniques, and lessons learned. We particularly encourage contributions involving the following topics: 1) quantifying the performance of systems in terms of rates of correct, false, and missed alarms, 2) real-time characterization of rupture finiteness, 3) the potential for including real-time GPS data in earthquake early warning, and 4) cost-benefit analysis and/or examples of user applications of earthquake early warning. Please let us know if you have any questions. We are looking forward to seeing you in San Francisco! Conveners: Georgia Cua (georgia.cua at sed.ethz.ch) and Maren Boese (mboese at caltech.edu ) -------------- next part -------------- An HTML attachment was scrubbed... URL: From Martha.Savage at vuw.ac.nz Thu Jul 23 12:48:44 2009 From: Martha.Savage at vuw.ac.nz (Martha Savage) Date: Fri, 24 Jul 2009 07:48:44 +1200 Subject: [iris-bulk] AGU special session V32: Volcanic Dynamics: Temporal Changes of Physical Properties at Volcanoes With and Without Surficial Activity Message-ID: Dear Colleagues, Please consider submitting your manuscript to the following special session to be held at the 2009 Fall AGU meeting. The abstract deadline for electronic submission is September 3rd, 2009. One of the main goals of current volcanological research is the identification of reliable precursors to the onset of eruptions, or to changes in an ongoing eruption. While many eruptions are preceded by increases in the rate or intensity of commonly-monitored signals, sometimes eruption onsets are not preceded by obvious changes with adequate warning times (e.g., Ruapehu 1995, Hekla 2000, Okmok 2008). Furthermore, few reliable precursors to co-eruptive changes (such as an increase in effusion rate or explosivity) have been identified, and some observed changes at volcanoes are not associated with eruptions. Thus, new approaches to detecting and understanding the significance of subtle signals of magma ascent may provide important additions to the current set of tools for eruption forecasting. We seek studies that present new observations and/or models of dynamic processes coincident with or independent of eruptions that provide insight into volcano behavior, including but not limited to temporal changes in seismicity patterns or characteristics (e.g., changes in seismic velocities or source mechanisms), gas emissions, surface deformation, temperature, microgravity, self-potential, magnetotellurics, and volcano hydrology. A second goal is to encourage discussion, finement, and synthesis of physical and numerical models for the observed changes. Convenors: Diana Roman, Martha K. Savage, Matthew E. Pritchard, and Matthew Haney. For additional information see http://www.agu.org/meetings/fm09 or contact one of the conveners. Conveners: Diana C Roman University of South Florida Dept. of Geology 4202 E. Fowler Ave, SCA 528 Tampa, FL, USA 33617 813-974-2838 droman at cas.usf.edu Martha K Savage Victoria University of Wellington School of Geography Environment and Earth Sciences PO Box 600 Wellington, NZL 6140 04 463 5961 Martha.savage at vuw.ac.nz Matthew E Pritchard Cornell University Snee Hall Ithaca, NY, USA 14853 607.255.4870 pritchard at cornell.edu Matthew Haney Boise State University 1910 University Drive Boise, ID, USA 83725 matt at cgiss.boisestate.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Fri Jul 24 08:00:44 2009 From: irismail at iris.washington.edu (IRIS) Date: Fri, 24 Jul 2009 08:00:44 -0700 Subject: [iris-bulk] AGU special session T24: Moho, Lithospere and Upper Mantle Structure Beneath Europe Message-ID: Dear colleagues Please consider submitting results of your research to the 2009 Fall AGU special session T24. The deadline for electronic abstract submission is September 3rd, 2009. Session description: "Moho, Lithospere and Upper Mantle Structure Beneath Europe: What Have we Learnt in 100 Years?" One century has passed since the earthquake in Kupa Valley, Croatia, which led A. Mohorovicic to the discovery of the existence of the crust-mantle boundary. He determined crustal thickness using about dozen of analogue stations operating in Europe at that time. Since then, changes in our paradigms about the Earth's crust and upper mantle have been driven by results from seismological and other geophysical data. Further advancement in our knowledge is anticipated as more information become available. An unprecedented recent expansion of seismic instruments in Europe has resulted in a considerable progress in elucidating structures of the Earth's lithosphere beneath Europe. Apart from reflection and refraction surveys, seismological techniques such as tomography, receiver functions, surface wave dispersion, shear wave splitting, and seismic noise studies have become increasingly popular, and are utilized by many networks. Yet there are still a number of regions in Europe with very little or no information about lithospheric structure. Thus it is crucial to take a multidisciplinary approach and interpret seismological findings in the context of relevant results from other disciplines such as geology, magnetotellurics, mineral physics, geochemistry, geodynamics, and others. All such contributions are welcome, and we particularly welcome contributions from small networks and individual stations whose data are not readily available. This session will unify findings that have a common objective of advancing our understanding of physical and chemical properties of Moho, lithospheric and upper mantle structure and tectonic processes beneath Europe and its surroundings. Conveners: Hrvoje Tkalcic, The Australian National University, Hrvoje.Tkalcic at anu.edu.au Marijan Herak, University of Zagreb, herak at irb.hr Davorka Herak, University of Zagreb, herak at irb.hr Gregory A Houseman, University of Leeds, greg at earth.leeds.ac.uk -------------- next part -------------- An HTML attachment was scrubbed... URL: From tkhong at yonsei.ac.kr Fri Jul 24 15:43:08 2009 From: tkhong at yonsei.ac.kr (Tae-Kyung Hong) Date: Sat, 25 Jul 2009 07:43:08 +0900 Subject: [iris-bulk] 2009 Fall AGU Special Session S15: Studies of North Korean Explosions and Implications for Nuclear Explosion Monitoring Message-ID: <003001ca0cb0$1e2f6380$5a8e2a80$@ac.kr> Dear colleagues, We would like to invite your contributions to the 2009 fall AGU session S15 "Studies of North Korean Explosions and Implications for Nuclear Explosion Monitoring". Description: Monitoring of nuclear explosions has been successfully conducted with international collaborations. Prompt responses from science communities to nuclear explosions are highly demanded for humankind welfare. North Korea has recently conducted two consecutive nuclear explosion tests in 2006 and 2009. These tests are the first ones conducted in the 21st century, and are well recorded by dense, modern regional and global seismic networks. The acquisition of high quality data provides us a unique chance to test the scientific knowledge accumulated for more than 50 years. The session is opened for live communication in science communities to discuss the implications of observed data, outstanding questions and research demands for further advance in nuclear monitoring. We welcome any studies related to the nuclear monitoring issues which may include source properties, seismic discrimination, event locationing, magnitude estimation, numerical modeling of seismic waveforms, waveform features at all distances, infrasound monitoring, influence of crustal structures on seismic waves, and comparisons between nuclear explosions. Please note that the abstract submission due date is 3 September 2009. Additional information can be found from http://www.agu.org/meetings/fm09 or the conveners. Conveners: Tae-Kyung Hong, Yonsei University KOR, tkhong at yonsei.ac.kr William Walter, Lawrence Livermore National Laboratory USA, bwalter at llnl.gov Jiakang Xie, Air Force Research Laboratory USA, jiakang.xie at gmail.com Howard Patton, Los Alamos National Laboratory USA, patton at lanl.gov From irismail at iris.washington.edu Mon Jul 27 08:01:56 2009 From: irismail at iris.washington.edu (IRIS) Date: Mon, 27 Jul 2009 08:01:56 -0700 Subject: [iris-bulk] AGU session U18 The EarthScope Initiative: From North America Geodynamics to New Frontiers in Science Message-ID: <24CDF519-BC37-48CB-8BCF-6F45A0FB981B@iris.washington.edu> Dear colleagues, We would like to encourage everyone working with Earthscope data to submit an abstract to the Fall AGU Union Session: The EarthScope Initiative: From North America Geodynamics to New Frontiers in Science The abstract deadline is September 3. If you have any questions about the session, please feel free to contact one of the conveners. The session description is given below. Conveners Kristine M Larson Michael Hedlin kristinem.larson at gmail.com hedlin at ucsd.edu Christine Puskas Lucy Flesch c.puskas at utah.edu lmflesch at purdue.edu U18 Session Description: EarthScope is a multidisciplinary geophysical observatory built to yield a comprehensive, time-dependent picture of the North American continent. EarthScope facilities include USArray, a continental-scale seismic component; the Plate Boundary Observatory (PBO), a geodetic network of GPS receivers and strainmeters; and SAFOD, a 3km hole drilled directly into the San Andreas fault. Data from the three projects are now being used as the basis of multidisciplinary geodynamic studies from local scales to continental scales in the western U.S., and are further being applied across a number of unexpected disciplines, including atmospheric, cryospheric, and hydrologic sciences. This session solicits abstracts that showcase the breadth of science coming out of the EarthScope project, from studies of lithospheric processes to new applications across disciplines. -------------------------------------------------------------------- Dr Michael A.H. Hedlin Laboratory for Atmospheric Acoustics Institute of Geophysics and Planetary Physics University of California, San Diego 9500 Gilman Drive, La Jolla, CA 92093-0225, USA Office: 1 858 534-8773 Cell: 1 858 204-5375 Fax: 1 858 534-6354 Express Mail Address: 8765 Biological Grade, Room 2107 La Jolla, CA 92037-0225, USA Shipping Address: 8800 Biological Grade, rm 102a La Jolla, CA 92037-0225, USA -------------------------------------------------------------------- From thorstinski at gmail.com Mon Jul 27 12:36:03 2009 From: thorstinski at gmail.com (Thorsten Becker) Date: Mon, 27 Jul 2009 12:36:03 -0700 Subject: [iris-bulk] AGU Union Session on The Scales and Dynamics of Mantle Heterogeneity Message-ID: <1248723363.7242.110.camel@jackie.usc.edu> Dear friends and colleagues: With apologies for any potential double posting, we would like to invite you to consider contributing to what promises to be an exciting Union Session at this year's Fall AGU U08: Mantle Heterogeneity: Bridging the Gap Between Observations and Dynamics You can expect lively discussions on recent advances in our understanding of the nature, origin, and evolution of mantle heterogeneity as reflected in seismological, mineral physics, and geochemical observations and geodynamic models. We seek contributions that address all aspects of constraining the spatio-temporal patterns of mantle heterogeneity and their dynamic implications, including scattering studies, tomographic power spectra analysis, and studies of the variations in geochemical signatures in time and space. In particular, we encourage discussion of work that strives to make the link between observations and models more quantitative, from simple physics approaches to fully 3-D, dynamically consistent models. Please see the detailed session information below and feel free contact us should you have any questions. We hope you will join us at AGU! Sincerely, Francis Albarede (albarede at ens-lyon.fr) Thorsten Becker (thorstinski at gmail.com) Razvan Caracas (razvan.caracas at ens-lyon.fr) Jeroen Ritsema (jritsema at umich.edu) Official session description: U08: Mantle Heterogeneity: Bridging the Gap Between Observations and Dynamics For decades, seismic imaging and geochemical studies have revealed the presence of heterogeneity in the mantle at many scale lengths. Recent self-consistent, geodynamic plate-generation models match the longest wavelength features of tomographic spectra but the full spectrum of tomographic images and geochemical heterogeneity has yet to be fully explained by models of mantle dynamics. We invite contributions from seismologists, geochemists, mineral physicists, and geodynamicists to discuss the nature of the spectra of seismological and geochemical heterogeneity, both in the deep and the shallow mantle, and at global and regional scales. New perspectives on the techniques and experiments that may improve resolution and on conceptual efforts that would make the dynamic models more testable against the observations are especially welcome. - Abstract submission form (deadline September 3): http://www.agu.org/meetings/fm09/program/abstract_submissions.php - Link to U08 session: http://www.agu.org/meetings/fm09/program/scientific_session_search.php?show=detail&sessid=237 - Fall AGU: http://www.agu.org/meetings/fm09/ From volker at norsar.no Tue Jul 28 00:48:16 2009 From: volker at norsar.no (Volker Oye) Date: Tue, 28 Jul 2009 09:48:16 +0200 Subject: [iris-bulk] AGU Session on Natural and Induced Microearthquakes: S05 Message-ID: <1FC7AB1A8B8957499B5C3155FDADE8FA1765DA@postmann.norsar.no> Dear Colleagues, please consider submitting your manuscript to our session on microearthquakes to be held at this year's AGU Fall meeting: S05: Observation and Analysis of Natural and Induced Microearthquakes Session description: The analysis of microearthquakes is conducted routinely in many different settings, such as safety monitoring of deep mines, large dams, hydrocarbon reservoirs, volcanoes, fault zone monitoring at deep drilling projects and increasingly in the frame of geothermal studies and CO2 sequestration projects. A new generation of dense monitoring networks and deep borehole seismometer installations asks for new approaches and techniques to detect, locate and analyze microearthquakes in particular for low signal-to-noise ratios. We are inviting contributions where advanced location techniques are used, and where the analysis of the full waveform have provided valuable additional information on the rupture process or on the properties of the surrounding medium, e.g. using microearthquakes for imaging purposes. Case studies as well as theoretical investigations are welcome. We further encourage contributions that address fundamental questions of earthquake statistics (scaling laws) and probabilities. With kind regards, Volker Oye (volker at norsar.no ) Stefan Buske (buske at geophysik.fu-berlin ) Jim Rutledge (jrutledge at lanl.gov ) Andres Chavarria (Andres.chavarria at seisres2020.com ) Abstract submission form (deadline September 3): http://www.agu.org/meetings/fm09/program/abstract_submissions.php Link to S05 session: http://www.agu.org/meetings/fm09/program/scientific_session_search.php?s how=detail&sessid=141 AGU Fall 2009: http://www.agu.org/meetings/fm09/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Tue Jul 28 07:50:08 2009 From: irismail at iris.washington.edu (IRIS) Date: Tue, 28 Jul 2009 07:50:08 -0700 Subject: [iris-bulk] 2009 Fall AGU Session S15: Studies of North Korean Explosion Message-ID: <752A8E9C-0AEB-40AC-A43E-467AC97F5D95@iris.washington.edu> Dear colleagues, We would like to invite your contributions to the 2009 fall AGU session S15 "Studies of North Korean Explosions and Implications for Nuclear Explosion Monitoring". Description: Monitoring of nuclear explosions has been successfully conducted with international collaborations. Prompt responses from science communities to nuclear explosions are highly demanded for humankind welfare. North Korea has recently conducted two consecutive nuclear explosion tests in 2006 and 2009. These tests are the first ones conducted in the 21st century, and are well recorded by dense, modern regional and global seismic networks. The acquisition of high quality data provides us a unique chance to test the scientific knowledge accumulated for more than 50 years. The session is opened for live communication in science communities to discuss the implications of observed data, outstanding questions and research demands for further advance in nuclear monitoring. We welcome any studies related to the nuclear monitoring issues which may include source properties, seismic discrimination, event locationing, magnitude estimation, numerical modeling of seismic waveforms, waveform features at all distances, infrasound monitoring, influence of crustal structures on seismic waves, and comparisons between nuclear explosions. Please note that the abstract submission due date is 3 September 2009. Additional information can be found from http://www.agu.org/meetings/fm09or the conveners. Conveners: Tae-Kyung Hong, Yonsei University KOR, tkhong at yonsei.ac.kr William Walter, Lawrence Livermore National Laboratory USA, bwalter at llnl.gov Jiakang Xie, Air Force Research Laboratory USA, jiakang.xie at gmail.com Howard Patton, Los Alamos National Laboratory USA, patton at lanl.gov -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Wed Jul 29 08:32:00 2009 From: irismail at iris.washington.edu (IRIS) Date: Wed, 29 Jul 2009 08:32:00 -0700 Subject: [iris-bulk] The Art of Being a Scientist, A Guide for Graduate Students Message-ID: <9BE252E6-5D38-49F7-90D2-009E908BCB77@iris.washington.edu> Dear colleagues, The book "The Art of Being a Scientist, A Guide for Graduate Students and their Mentors" that Ken Larner and I wrote is available from Cambridge University Press. I have been teaching this material as a course for beginning graduate students, and found that such a course is very effective in helping graduate students develop creative and productive research habits. The book contains an appendix with a sample curriculum that may give ideas for giving shape to such a course. I hope this material is useful for you, whether you are a graduate student or advisor. You can obtain information about the book from: http://www.mines.edu/~rsnieder/Art_of_Science_flyer.pdf Please let me know if you have any questions about the book, or about developing a course for beginning graduate students. Best regards, Roel Snieder -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Wed Jul 29 15:13:11 2009 From: irismail at iris.washington.edu (IRIS) Date: Wed, 29 Jul 2009 15:13:11 -0700 Subject: [iris-bulk] AGU: Using Web 2.0 Technologies to Facilitate Communication Message-ID: <8B0B642B-27CB-4CEC-B544-7262ABD9D58E@iris.washington.edu> The organizers of the this AGU session on the use of Web 2.0 tools to enhance science communications have invited participation from the seismology community and I encourage you to submit an abstract. You can be a first author on an education abstract as well as a science abstract. ED12: Using Web 2.0 Technologies to Facilitate Science Communications Session Description: The World Wide Web has changed the way society shares and receives information. New technologies and applications are lifting us from static web pages to interactive and dynamic online experiences. Gone are the days when web pages only disseminated information; today online tools allow users to interact with each other, building cohesive communities and new opportunities for collaboration. Professional science organizations, large research projects, and science education centers can now use blogs, social networking sites, wikis, webinars, and other Web 2.0 applications to publicize news and programmatic information, interact with their audiences, create awareness of concepts, develop new ideas, and attract new stakeholders and participants to their programs. This session will discuss how scientists and organizations are leveraging online tools (e.g., Facebook, Twitter, web forums) to revolutionize the way science is communicated, both within the science community and with other groups. http://www.agu.org/meetings/fm09/ From larryboschi at gmail.com Thu Jul 30 06:58:58 2009 From: larryboschi at gmail.com (lapo boschi) Date: Thu, 30 Jul 2009 15:58:58 +0200 Subject: [iris-bulk] PhD position in seismology available at ETH Zurich In-Reply-To: References: Message-ID: <42703a330907300658m207b51c1o641f736c729524a1@mail.gmail.com> We seek a highly motivated Ph.D. candidate at ETH Zurich to be working within the newly funded European Marie-Curie training network QUEST ( www.quest-rtn.org ) in the domain of computational seismology. This network comprises 14 partner institutions, and guarantees a unique basis for fruitful and innovative research through vigorous scientific exchange, workshops, and industrial internships. QUEST revolves around the seismic inverse problem, i.e. deducing viable earth models from seismic data. Modern approaches solve the seismic wave equation via sophisticated numerical methods and high-performance computing facilities. Our proposed research project engages in such techniques in order to constrain the structure of the deep earth, core-mantle boundary region, and core. Of specific interest is the aspherical topography on sharp seismic interfaces: We expect the applicant to further develop forward and inverse modeling in this context, possibly combined with ideas from the exploration industry. This will result in more coherent and refined images of these discontinuities which is key to understanding and further constraining the geomagnetic field and thermal evolution of the earth. Applicants must hold a M. Sc., Diploma or equivalent in the geosciences, physics, applied mathematics, computer sciences or related field. Central to this project are strong analytical and quantitative skills in numerical analysis, programming, high-performance computing, and an interest in wave phenomena, inverse theory, data analysis, and global dynamics of the earth. A solid knowledge of English as the spoken and written language of work is mandatory. We expect good interpersonal skills, the ability to thrive in a diverse, multidisciplinary environment as much as the willingness to spend time at partner institutions, and to present at international conferences. The Institute of Geophysics at ETH Zurich boasts a strong research and teaching nvironment covering a wide array of disciplines. Please consult the Seismology and Geodynamics web pages ( www.seg.ethz.ch ), or contact Dr. Tarje Nissen-Meyer ( www.princeton.edu/~tarje ) and Dr. Lapo Boschi ( www.seg2.ethz.ch/boschil/index.html ) for further information or any remaining questions. Complete applications must include a statement of scientific interests, curriculum vitae and contact details of two referees familiar with the academic ability of the candidate, and should be emailed to Dr. Boschi: lapo at erdw.ethz.ch (electronic PDF format preferred), preferably by early September, 2009. the earliest starting date is January 2010, but no later than June 2010. ETH Zurich is an equal-opportunity and non-discriminating employer. From anewman at gatech.edu Thu Jul 30 13:47:51 2009 From: anewman at gatech.edu (Andrew Newman) Date: Thu, 30 Jul 2009 16:47:51 -0400 Subject: [iris-bulk] AGU Session T04: Earthquakes at the Edge: Observing and Understanding Transitions of Seismogenic Properties and Processes Along Subduction Zones Message-ID: <4A7206F7.1050409@gatech.edu> Dear Colleagues, We would like to invite you to contribute to special session T04 in Tectonophysics (joint with Geodesy and Seismology) aimed at discussing studies that explore the parameters that contribute to the spatial extend of subduction zone seismogenensis. T04: "Earthquakes at the Edge: Observing and Understanding Transitions of Seismogenic Properties and Processes Along Subduction Zones" The world?s largest earthquakes occur in subduction zones; with the ultimate magnitude controlled by the updip, downdip and lateral extent of rupture. Additionally, the updip and lateral extent contribute greatly to tsunami generation. Barriers to rupture propagation may be controlled by prior seismic and aseismic slip, material behavior, subducted topography, fluid pressure, temperature and overburden that affect interface effective stress, strength, and friction. However, precise determinations of the defining parameters remain elusive. Because transitions mark critical changes in environmental parameters that result in earthquake rupture propagation or cessation, multidisciplinary studies that explore these transitions can greatly improve our understanding of earthquake and tsunami occurrence and potential. We invite contributions that address present challenges or offer new insights or synthesis studies aimed at understanding the nature and extent of seismogenic updip, downdip, and lateral transitions along the subduction interface. Studies may focus on short and/or long-term character of the seismogenic system. If you have further questions about the session, please feel free to contact any of the conveners. We look forward to seeing you in December! Elizabeth Screaton University of Florida 241Williamson Gainesville, Fl, USA 32611 352-392-4612 screaton at ufl.edu Saneatsu Saito IFREE, JAMSTEC 2-15 Natsushima-cho Yokosuka, JPN 237-0061 saito at jamstec.go.jp Andrew V Newman Georgia Institute of Technology Atlanta, GA, USA 30332 anewman at gatech.edu Robert N Harris Oregon State University Corvallis, OR, USA 97331 rharris at coas.oregonstate.edu -- ~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~+~~ Andrew V. Newman anewman at gatech.edu Assistant Professor School of Earth and Atmospheric Sciences Georgia Institute of Technology 311 Ferst Drive Office: 404-894-3976 ES&T, Room 2254 Lab: 404-385-2050 Atlanta, GA, 30332-0340 Fax: 404-894-5638 http://geophysics.eas.gatech.edu/anewman From dalton at bu.edu Thu Jul 30 14:41:53 2009 From: dalton at bu.edu (Colleen Dalton) Date: Thu, 30 Jul 2009 17:41:53 -0400 Subject: [iris-bulk] AGU session S07: Progress in Imaging Earth's Attenuation Structure Message-ID: <589F75B4-3654-452E-AAF0-64C4FBAD4F18@bu.edu> Dear Colleagues, Please consider submitting an abstract to the Fall 2009 AGU meeting for the Seismology session (joint with Tectonophysics) S07: Progress in Imaging the Earth's Attenuation Structure. A description is included below. We look forward to seeing your recent results as contributions to the session. Best Regards, Michael Pasyanos, Lawrence Livermore National Laboratory, pasyanos1 at llnl.gov Colleen Dalton, Boston University, dalton at bu.edu =================================================================== S07 session description: While the majority of seismic models contain spatial variations in wave speed, their interpretation in terms of the Earth?s physical and chemical state and dynamics would be considerably improved by accompanying images of attenuation structure, ideally with comparable spatial resolution. Isolating the signal of attenuation in seismic data presents significant challenges, and yet new data sets and techniques are leading to great advances in our understanding of the Earth?s attenuation structure. Researchers are now investigating crust, mantle, and core attenuation at local, regional, and global scales using a number of methods including direct-phase amplitudes, two-station methods, coda methods, surface waves, normal modes, and ambient noise. We seek studies using any of these various methods to image attenuation. We are particularly interested in studies that highlight new methodologies, combine diverse datasets, and explore the relative significance of intrinsic and scattering attenuation. We also seek submissions from researchers who are applying attenuation studies to seismic hazard, explosion monitoring, and tectonic analysis. -------------- next part -------------- An HTML attachment was scrubbed... URL: From irismail at iris.washington.edu Fri Jul 31 08:57:17 2009 From: irismail at iris.washington.edu (IRIS) Date: Fri, 31 Jul 2009 08:57:17 -0700 Subject: [iris-bulk] IRIS DMS Newsletter - Summer 2009 Message-ID: <02B3DDB3-0A9A-4CA4-AF81-685A700510D2@iris.washington.edu> The Summer 2009 edition of the IRIS DMS Newsletter is available online at http://www.iris.edu/news/newsletter/vol11no2/ Feature Article Server Hardware Transitions Application Spotlight RESP - Channel Response Tool What's New evalresp v3.3.0 SAC v101.3 SPADE 1.1 Uptime Report Tool Staff Highlight Sue Schoch Data Access New Networks New Data at the DMC -------------- next part -------------- An HTML attachment was scrubbed... URL: From ecalais at purdue.edu Fri Jul 31 10:01:26 2009 From: ecalais at purdue.edu (Eric Calais) Date: Fri, 31 Jul 2009 13:01:26 -0400 Subject: [iris-bulk] AGU Session: Changes in Plate Tectonic Motions and Conservation of Angular Momentum Message-ID: Dear Colleagues, Please consider contributing to the following session at the 2009 Fall AGU meeting. We hope you will join us there! Regards, Carl and Eric ---------- Changes in Plate Tectonic Motions and Conservation of Angular Momentum In the past, evidence appeared to indicate that plate motions were steady at time scales of a few million years, and zero net torque global solutions applied. At longer time scales it was also recognized that plate motions do change in direction and rate. However, recent results show that the major plates of the Earth accelerate and decelerate at rates as high as 0.3 mm/a/Ma for the past 62 Ma, and furthermore that conservation of angular momentum applies to plate tectonics. (Harada and Hamano, 2000; www.electronic-earth.discuss.net/4/21/2009 ). For this Session we urge contributions that (1) may help link periods of plate deceleration with plate boundary processes; (2) provide further evidence of plate accelerations/decelerations, particularly for the Mesozoic and Paleozoic periods; (3) that can provide additional plate acceleration/deceleration evidence during the Cenozoic and Recent times, the latter possibly from comparisons between geological and space geodetic observations; and (4) that may offer alternate interpretations, including modeling results that link plate motion changes with plate boundary or mantle processes. Conveners: Carl Bowin (Woods Hole Oceanographic Institution) and Eric Calais (Purdue University) ---------- -------------- next part -------------- An HTML attachment was scrubbed... URL: