Seismic Calibration Of The European Arctic

• Main Authors: Mykkeltveit, Svein, Ringdal, Forde, Lindholm, Conrad, Kremenetskaya, Elena
• Format: Report
• Language: English
• Subjects: ARCTIC REGIONS; BARENTS SEA; CALIBRATION; DATA ACQUISITION; EARTHQUAKES; EUROPE; FINLAND; FOREIGN REPORTS; MINING ENGINEERING; MONITORING; NORTHERN EUROPE; NORWAY; NUCLEAR EXPLOSION SIMULATION; RUSSIA; SEISMIC CALIBRATION; SEISMIC DATA; Seismic Detection and Detectors; SEISMIC EVENTS; SEISMIC PHASES; SEISMIC WAVES; Seismology; SWEDEN; SYMPOSIA; USSR; WAVE PROPAGATION; WAVEFORMS

The purpose of this two-year effort, which started on 1 January 1999, is to support the construction of the U.S. Department of Energy (DOE) Comprehensive Nuclear-Test-Ban Treaty Knowledge Base for detecting, locating and identifying seismic events in the area of northern Fennoscandia, the Kola Peninsula, Novaya Zemlya, and the surrounding waters of the Barents and Kara Seas. The main objectives of the effort are to assemble a set of historical seismic observations suitable for characterizing all aspects of seismic wave propagation and seismic sources in this region, to describe the principal seismic phases observed in the seismograms, and to calibrate the region with respect to seismic wave propagation (travel-times and amplitude-distance relations). The main emphasis of work on this contract so far has been on data collection. Waveform data have been complied for a range of sources in the European Arctic: Nuclear tests at the Novaya Zemlya test site, peaceful nuclear explosions conducted in the area, earthquakes and presumed underwater explosions from 1970 to the present, and representative blasts from mining operations in the Kola Peninsula, northern Norway, Sweden, Finland and adjacent regions of European Russia. Waveform data collected under this effort have been provided in CSS 3.0 format, with the appropriate metadata included, to DOE through the Lawrence Livermore National Laboratory, to the U.S. Department of Defense through the Center for Monitoring Research, and to the U.S. National Data Center. So far, segmented data for 111 events have been extracted and copied to eight CD ROMs. In addition, a set of seven Exabyte tapes has been produced, containing continuous data in the form of 15-day segments around the origin times of three events that occurred in the Noyaya Zemlya region during 1995-1997. Additional data for events of special interest will be delivered during the year 2000. Proceedings of the Annual DoD/DOE Seismic Research Symposium (22nd): Planning for Verification of and Compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT) held in New Orleans, Louisiana on 13-15 September 2000. U.S. Government or Federal Rights. The original document contains color images.