Accession Number : ADP204430

Title :   Lower Crustal and Upper-most Mantle Structure beneath Station WMQ, China by using Teleseismic P-wave Polarization Signals,

Corporate Author : LAMONT-DOHERTY EARTH OBSERVATORY PALISADES NY

Personal Author(s) : Gao, Liping ; Richards, Paul G.

PDF Url : ADP204430

Report Date : 14 AUG 1995

Pagination or Media Count : 9

Abstract : We have applied a polarization tomographic inversion to the single station WMQ to retrieve the velocity structure of the lower crust and upper-most mantle in the vicinity of Lop Nor. 828 teleseismic P-wave waveforms with event magnitude Mb > 5.0 around the world with excellent coverage of back azimuth were collected and are used to measure polarization anomalies. In addition, 39 PKP signals are used. Inversion results reveal a low velocity region or a depressed Moho to the northwest of the WMQ station.

Descriptors :   *SEISMIC DETECTION, *EARTH CRUST, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *SEISMIC DISCRIMINATION, *EARTHQUAKES, *PRIMARY WAVES(SEISMIC WAVES), SYMPOSIA, UNDERGROUND EXPLOSIONS, NUCLEAR EXPLOSION TESTING, SEISMIC WAVES, TOMOGRAPHY, SEISMIC VELOCITY, CHINA, EARTH MANTLE, SEISMOLOGICAL STATIONS.

Subject Categories : Government and Political Science
      Geology, Geochemistry and Mineralogy
      Seismology
      Seismic Detection and Detectors
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE