Accession Number:

ADA053602

Title:

Extraction of Long-Period Bodywaves

Descriptive Note:

Technical rept.

Corporate Author:

TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP

Personal Author(s):

Report Date:

1977-11-14

Pagination or Media Count:

37.0

Abstract:

A polarization filter for long-period bodywaves was developed and tested on 100 events from the Kurile Islands and measured at the Guam Seismic Research Observatory. Fifty percent detection thresholds before processing were m sub b 5.5 and 5.1 for P and S waves, respectively, and were unchanged by the filter unless a substantial false alarm rate was allowed, when the P threshold was reduced to m sub b 5.0. There is evidence that this poor performance is due to the data set used.

Subject Categories:

  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE