Research on Seismic Calibration of the International Monitoring System in Northern Eurasia

摘要

The main goals of the 'Russian Seismoacoustic Research for CTBT Monitoring' project were: Calibration of seismic stations of the Russian Academy of Sciences (RAS) included in the International Monitoring System (IMS), Development of travel time data for calibration studies in northern Eurasia, Collection data on peaceful nuclear explosions (PNEs) in the former Soviet Union, The Geophysical Survey (GS) of RAS and the Complex Seismological Expedition (CSE) of the Joint Institute of Physics of the Earth of the RAS, collected Northern Eurasian data on time arrivals for regional seismic phases. Tables for Pn, Pg, Sn and Lg waves have been updated. From travel-time residual analysis, we conclude that the lASPEI-91 predicted travel times are substantially biased in comparison with those predicted by Source Specific Station Corrections developed in this report. We review recently published and historical data on the parameters of PNEs' in the former Soviet Union. The seismic locations of the International Seismological Center (ISC) for some PNEs' show large misallocations (greater than 101cm) according to newly found information on these PNEs' actual locations. For ISC estimates of origin times for some PNEs' in the paper of Sultanov et. al., 1999, we provide adjusted data.