The GSETT-3 Experiment and the Prototype International Data Center
Abstract
On February 20, 2000 the International Data Center (IDC) operated by the Provisional Technical Secretariat of the CTBT Organization in Vienna assumed responsibility for the generation of IDC products and the distribution of IDC products and International Monitoring System (IMS) data. This marked the end of the Group of Scientific Experts third Technical Test (GSETT-3) that started continuous operation on January 1, 1995. During the five years of GSETT-3 the Prototype IDC (PIDC) at the Center for Monitoring Research (CMR) acquired data from over 200 seismic, hydroacoustic, infrasonic and radionuclide facilities worldwide. Automatic processing and subsequent analysis of these data led to Reviewed Event Bulletins (REB) that were issued for every single day, except May 8- 14, 1995, between January 1995 and February 2000 and that contained 99,212 events. Over 50 nations participated in GSETT-3 through the operation of sensor facilities, provision of data and bulletins, and staffing the PIDC. During GSETT-3 participation steadily increased and new functionality was added to the PIDC every few months. Many new features were provided by a variety of DTRA contractors and several foreign agencies. A visiting scientist program brought scientists from many countries to participate in the development, operation and evaluation of the PIDC. Initially only seismic data were processed and analyzed, but hydroacoustic and radionuclide data were incorporated in 1996 and infrasonic data in 1998. Both automatic and reviewed bulletins include signal detections from all three acoustic technologies, and over 15% of REB events have associated hydroacoustic T-phases; infrasonic associations are much rarer. The history of participation in GSETT-3, and improvements in, and additions of new features to, processing and analysis are summarized.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2000
- Accession Number
- ADA530260
Entities
People
- Richard J. Stead
- Robert G. North
Organizations
- Defense Threat Reduction Agency