This research is to improve surface-wave dispersion maps using both dispersion and polarization data measured from long-period (greater than 100 seconds) 3-component recordings from the various global networks. Surface wave dispersion maps provide important constraints on global models of shear-wave velocity structure. The current generation of surface-wave dispersion maps show significant differences from author to author and the additional constraint of polarization data, interpretated within a ray-theoretical framework, provides sensitivity to higher-order structure. In order to validate the procedures and assess the importance of large-scale anisotropy, the work will include application of the measurement and interpretation techniques to coupled-mode synthetic seismograms.

Agency
National Science Foundation (NSF)
Institute
Division of Earth Sciences (EAR)
Type
Standard Grant (Standard)
Application #
9304194
Program Officer
James H. Whitcomb
Project Start
Project End
Budget Start
1993-07-01
Budget End
1994-09-30
Support Year
Fiscal Year
1993
Total Cost
$49,260
Indirect Cost
Name
University of California-San Diego Scripps Inst of Oceanography
Department
Type
DUNS #
City
La Jolla
State
CA
Country
United States
Zip Code
92093