Monitoring Nuclear Tests

Author:

Barker Brian1,Clark Michael2,Davis Peter3,Fisk Mark4,Hedlin Michael3,Israelsson Hans2,Khalturin Vitaly5,Kim Won-Young5,McLaughlin Keith2,Meade Charles6,North Robert2,Orcutt John3,Powell Chris7,Richards Paul G.5,Stead Richard2,Stevens Jeffry1,Vernon Frank3,Murphy John1,Wallace Terry8

Affiliation:

1. Maxwell Technologies, Reston, VA 22091, USA.

2. Center for Monitoring Research, Science Application International Corporation, Arlington, VA 22209, USA.

3. Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92037, USA.

4. Mission Research Corporation, Newington, VA 22122, USA.

5. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.

6. RAND Corporation, 1333 H Street, N.W., Washington, DC 20005, USA.

7. Autometric, Alexandria, VA 22312, USA.

8. Department of Geosciences, University of Arizona, Tucson, AZ 85745, USA.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference15 articles.

1. The text of the CTBT specifies the locations and characteristics of the IMS stations. It includes a primary network of 50 seismic stations and an auxiliary network of 120 stations 80 radionuclide detectors 11 hydroacoustic stations and 60 infrasound stations.

2. Thirty-six primary and 58 auxiliary seismic stations are now operational. In its current state the network relies on voluntary efforts and contributions of national governments and organizations. In the future six of the primary stations will be upgraded from single three-component sensors to multistation arrays. All stations will be linked by satellite directly to the IDC.

3. Details of the results can be found at the PIDC Web page (http://www.pidc.org/dataprodbox/prod.html).

4. Historically the most reliable screen has been the difference between long-period surface ( M s) and short-period body ( m b) wave magnitudes. For explosions m b is typically greater than (1.76 + 0.8 M s). Spectral ratios of regional P S waves tend to separate earthquake and explosion populations because of differences in the compressional and shear wave energy emitted by explosive and earthquake sources.

5. The PIDC uses IASPEI-91 for all seismic locations except in the Baltic shield where a specially calibrated model has been implemented.

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