GPS bolsters view that big Cascadia quakes could hit inland

GPS bolsters view that big Cascadia quakes could hit inland
http://www.sciencenews.org/view/generic/id/50022/title/GPS_bolsters_view_that_big_Cascadia_quakes_could_hit_inland
Satellite tracking of plate movements shows that a magnitude-9 tremor in Pacific
Northwest
could strike close to urban areas

http://www.sciencenews.org/view/generic/id/50022/title/GPS_bolsters_view_that_big_Cascadia_quakes_could_hit_inland

Loma Prieta was approximately a magnitude 7. That damaged 12,000 homes.
A magnitude 9 is 100x that. That would probably be a good time to not
be in the Bay Area...

-wolfgang
--
Wolfgang S. Rupprecht
If the airwaves belong to the public why does the public only get 3
non-overlapping WIFI channels?

Paper discussed in article (full text not free):

http://www.agu.org/pubs/crossref/2009/2009GL040465.shtml

Free Word version:

www.panga.cwu.edu/about/pubs/Chapman&Melbourne_GRL.Sep30.doc

"The ETS-derived coupling profile accurately predicts GPS-measured
interseismic deformation of the overlying North American plate, as
measured by ~50 continuous GPS stations across western Washington
State. . . . Raw GPS phase observables from the combined networks of
the Pacific Northwest Geodetic Array, the Plate Boundary Observatory,
and the Western Canada Deformation Array were processed with the GIPSY
software package [Zumberge et al., 1997]. "

Melbourne's web page (Chapman is a graduate student, M.S. 2008):

http://www.geology.cwu.edu/facstaff/tim/

Trimble receiver and antenna shown here:

http://www.geology.cwu.edu/facstaff/tim/PHOTOS/Mt_Olympus/mt_olympus.html

http://www.geology.cwu.edu/facstaff/tim/PHOTOS/Mt_Olympus/MOLY.jpg

Pacific Northwest Geodetic Array:

http://www.geodesy.org/

http://www.geodesy.org/data/wusdaily/

"This page integrates daily GPS measurements from ~1500 stations along
the Pacific/North American plate boundary, ranging from Alaska to the
U.S-Mexico border . . . "


http://www.geodesy.org/realtime/

"GPS data are telemetered in real-time back to CWU, where they are
processed in real-time using both JPL's RTG software as well as
Trimble's RTKNet Integrity Manager software to provide relative
positioning of several mm resolution. Here we provide an overview of
real-time GPS data, CWU's PANGA analysis activities and data
processing algorithms. "


Network map:

http://www.panga.cwu.edu/demo_vms/map_gui.html


Other networks:

http://wcda.pgc.nrcan.gc.ca:8080/wcda/wcdamap_e.php

http://gsc.nrcan.gc.ca/geodyn/wcda/index_e.php

http://pboweb.unavco.org/

http://www.pnsn.org/WEBICORDER/DEEPTREM/summer2009.html