[data-issues] polarity reversal for XM.TX06: RESOLVED
Rick Benson
rick at iris.washington.edu
Fri Mar 17 11:02:03 PST 2006
Hi, Philip-
Thank you for bringing the polarity issue with the horizontals of TX06
to light.
This site had continuously reversed horizontals for the entire experiment
campaign of RISTRA, XM1999-2001.
As a method to resolve this, the azimuth/dip fields of the SEED metadata
have
been changed in the IRIS database. Because the problem was first observed
using WILBERII, however, it should be noted that record section plotting
using
the WILBERII interface does not utilize the metadata, and plots miniSEED
only.
Therefore, all earthquake record sections will continue to show the
reversed polarities
on the horizontals for site TX06.
Attached is Dave Wilson's email for the list-serv archive. This will
also appear in the DPR
catalog for site TX06. http://www.iris.edu/data/dpr.htm
On Thu, 16 Mar 2006
Hello Rick,
Yes, TX06 does have reversed polarity on the
horizontal components for the entire RISTRA
experiment.
Dave
---------------------------------
Dave Wilson, Postdoctoral Fellow
davew at geo.utexas.edu
Jackson School of Geosciences
The University of Texas at Austin
---------------------------------
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