Accession Number:

ADA456301

Title:

Reducing Systematic Errors for Seismic Event Locations Using a Model Incorporating Anisotropic Regional Structures

Descriptive Note:

Technical rept.

Corporate Author:

WASHINGTON UNIV ST LOUIS MO

Personal Author(s):

Report Date:

2006-03-01

Pagination or Media Count:

17.0

Abstract:

We have utilized a mapping of the lateral and anisotropic variations in Pn velocities beneath continents across the globe Smith Ekstrom, 1999 to predict travel times of P-wave propagation at distances of 2 - 14 degrees. At such distances, the phase Pn is in the seismic phase that is most frequently reported and that thus controls the location accuracy. This is important in CTBT applications as many events of interest are only detected at these distances. We have thus worked on reducing the systematic errors in Pn travel-times and the resulting seismic event location at regional distances using our mapping.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE