Next: Conclusion
Up: Prucha and Biondi: STANFORD
Previous: Anecdotal Evidence
Michael Bostock showed results of the seismologic imaging effort at the
University of British Columbia at an invited lecture given to the
Stanford Geophysics Department on March 14, 2002. His group utilized
a data set collected by John Nabalek of the University of Oregon. The
1993 data was collected with the IRIS-PASSCAL equipment and is freely
available.
The array is 300 km long with 69 broadband seismometers every four km.
Bostock inverts 31 earthquake event records across the array from many
azimuths and teleseismic incidence angles to image crustal structure
from the subducting oceanic crust into the volcanic back-arc basin
across strike of the central Oregon Cascades region.
By inverting 31 earthquake events with dominate energies
arriving with two second periods, his results have kilometer scale
resolution. While the field equipment and experiment design limit the
study to well below the resolution required for applications
envisioned by this group, it does stand as a proof of concept for the linear
experiment.
Next: Conclusion
Up: Prucha and Biondi: STANFORD
Previous: Anecdotal Evidence
Stanford Exploration Project
6/7/2002