Accession Number:

ADA256681

Title:

The Receiver Structure Beneath the Chinese Digital Seismograph Network (CDSN) Stations: Preliminary Results

Descriptive Note:

Scientific rept. no. 1

Corporate Author:

WESTON OBSERVATORY MA

Personal Author(s):

Report Date:

1992-04-30

Pagination or Media Count:

107.0

Abstract:

This report provides preliminary results of an investigation of the crust and upper-mantle seismic velocity structure beneath the China Digital Seismograph Network CDSN. Receiver functions obtained from over 100 teleseismic events were stacked by common back-azimuth and epicentral distance and inverted for the velocity structure beneath 5 CDSN stations. ne inversion results show that stations HIA and BJI have well constrained crustal models of about 40-km thickness with gradational Mohos. At WMQ there is evidence for shallow dipping structure and the inversion results indicate a smooth positive gradient in the crust with a transitional crust-mantle boundary. Model estimates for KMI and LZH are poorly constrained by the data analyzed thus far. Synthetic seismograms of 5 CDSN crustal models for the Soviet JVE nuclear test indicate that the receiver structure most strongly affects the radial component of the recorded P wave.

Subject Categories:

  • Seismology
  • Command, Control and Communications Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE