<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Message from the WGLTSS:</p>
<blockquote>
<p>IRIS is pleased to announce a SIG meeting on Long-Term Seafloor
Seismographs (LTSS) to be held at the 2017 AGU Fall Meeting in
New Orleans.<br>
<br>
The scientific needs of global and regional seismology require
long-term (2 to 5+ years, ~permanent), high-quality, telemetered
seismic observations from key seafloor sites in order to
complement existing high-quality permanent stations on land.<br>
<br>
The LTSS SIG is scheduled for Wednesday, December 13th from
4-5:30 pm Dauphine I & II rooms of the Hampton Inn &
Suites / New Orleans Conference Center, and is being hosted by
the WGLTSS (IRIS Working Group on Long-Term Seafloor
Seismographs)<br>
<br>
This SIG will provide an opportunity for community members who
are interested in the deployment of "long-term" high-quality
broadband seismic stations on the seafloor. Planned topics of
discussion include:<br>
<br>
</p>
<ol>
<li>Review of current proposed and planned seafloor station or
array deployments, including length of deployments, relevant
to long-term, continuous monitoring.</li>
<li>Review of potential scientific targets and observations,
e.g. recording seismic phases, great earthquakes, etc.</li>
<li>How long does a site need to be continuously occupied to
gather enough relatively short-period mantle and core phase
data from large earthquakes?</li>
<li>Discussion of scientific observations that require
deployments longer than 18 months. </li>
<ul>
<li>What can we observe over 5 years that we cannot observe
over 18 months? </li>
<li>What can we observe over 10 years that we cannot observe
over 5 years?</li>
</ul>
<li>Pros and cons of short-term "arrays of stations" versus
deploying one high-quality station for a longer period of
time.</li>
<li>What array configurations are needed to see the details of
large-scale deep earth structures that have been partially
resolved with global tomography?</li>
</ol>
<p>Those interested in attending are asked to [e-mail Katrin
Hafner - <a class="moz-txt-link-abbreviated" href="mailto:katrin@iris.edu">katrin@iris.edu</a>] so that we may get an approximate head
count for catering and room setup. Responses before
Thanksgiving would be greatly appreciated. Information about the
charge of the WGLTSS is available at
<a class="moz-txt-link-freetext" href="http://www.iris.edu/hq/about_iris/governance/wgltss">http://www.iris.edu/hq/about_iris/governance/wgltss</a><br>
<br>
Thanks, and we hope to see you there!<br>
<br>
Monica Kohler, WGLTSS Chair<br>
Jeffrey Park, GSN SC Chair<br>
</p>
</blockquote>
<pre class="moz-signature" cols="72">--
Kasey Aderhold, Ph.D.
Project Associate | IRIS TA/OBSIP Management
202-407-7019 | <a class="moz-txt-link-abbreviated" href="mailto:kasey@iris.edu">kasey@iris.edu</a></pre>
</body>
</html>