Accession Number:

ADA569487

Title:

Seismic and Geophysical Characterization of Northern Asia

Descriptive Note:

Conference paper

Corporate Author:

LOS ALAMOS NATIONAL LAB NM

Report Date:

2010-09-01

Pagination or Media Count:

12.0

Abstract:

We have begun a major research effort consisting of a combination of seismic field deployments, historical seismic data retrieval, and seismic data analysis to further improve the calibration of northern Asia for nuclear explosion monitoring purposes. This project builds off previous work, and is a cooperative effort between Michigan State University MSU, Los Alamos National Laboratory LANL, Lawrence Livermore National Laboratory LLNL and several seismic networks in Russia and Japan. The geographic scope of this project covers Russia from the Urals to the Bering Strait and from the Arctic Ocean to the North Korean border. We are expanding our unique data set on earthquakes and nuclear and industrial explosions. Combining historic datasets with data from approximately 50 existing Russian and MSURussian and JapaneseRussian digital seismic stations, new deployments, and geologic information, we will substantially increase ground truth data and our understanding of the seismicity, velocity structure, explosion discrimination, and wave propagation characteristics in northern Asia. Our work will further improve location and detection and discrimination capabilities, crustal and upper mantle structure, wave propagation, and natural seismic source characteristics of northern Asia. Our initial work on this project covers several aspects. Updated our seismicity map and seismic database for eastern Russia through 2009. This update has added many thousands of events with associated bulletin information phase arrival times, amplitude measurements, etc.. We are extending the map to cover the Altai-Sayan network. Targeted research on active faulting in the Nera Basin and the Moma Range by combining hypocenter locations, satellite and field analysis of fault scarps, and geomorphological analysis of geologic structures and river drainage. Continued our efforts to digitize and analyze historic seismograms from Soviet Peaceful Nuclear Explosions PNEs.

Subject Categories:

  • Seismology
  • Nuclear Explosions and Devices (Non-Military)

Distribution Statement:

APPROVED FOR PUBLIC RELEASE