LLNL Middle East and North Africa and Former Soviet Union Research Database

• Main Authors: O'Boyle, Jennifer L, Ruppert, Stanley D, Hauk, Teresa F, Dodge, Doug, Firpo, Mike
• Format: Report
• Language: English
• Subjects: ACCESS; DATA ACCESS; DATA ACQUISITION; DATA BASES; DATA PROCESSING; EVENT BULLETINS; FSU(FORMER SOVIET UNION); GEOGRAPHICAL INFORMATION SYSTEMS; GNEM(GROUND BASED NUCLEAR EXPLOSION MONITORING); IMS(INTERNATIONAL MONITORING SYSTEMS); KNOWLEDGE BASES; MENA(MIDDLE EAST AND NORTH AFRICA); PHASE INFORMATION; RDB(RELATIONAL DATABASES); RESEARCH FACILITIES; SEISMIC DATA; Seismology; SRKB(SEISMIC RESEARCH KNOWLEDGE BASE); SYMPOSIA; Test Facilities, Equipment and Methods; VISUALIZATION; WAVEFORMS

The Lawrence Livermore National Laboratory (LLNL) Ground-Based Nuclear Explosion Monitoring (GNEM) R&D program has made significant progress populating a comprehensive Seismic Research Knowledge Base (SRKB) and deriving calibration parameters for the Middle East and North Africa (ME/NA) and Former Soviet Union (FSU) regions. The LLNL SRKB provides not only a coherent framework in which to store and organize very large volumes of collected seismic waveforms, associated event parameter information, and spatial contextual data, but also provides an efficient data processing/research environment for deriving location and discrimination correction surfaces. The SRKB is a flexible and extensible framework consisting of a relational database (RDB), Geographical Information System (GIS), and associated product/data visualization and data management tools. This SRKB framework is designed to accommodate large volumes of data (over 2 million waveforms from 20,000 events) in diverse formats from many sources (both LLNL derived research and integrated contractor products) in addition to maintaining detailed quality control and metadata. Using the SRKB framework, we are combining travel-time observations, event characterization studies, and regional tectonic models to assemble a library of ground truth information and phenomenology (e.g. travel-time and amplitude) correction surfaces required for support of the ME/NA and FSU regionalization program. Corrections and parameters distilled from the LLNL SRKB provide needed contributions to the DOE Knowledge Base (DOE KB) for the ME/NA and FSU regions and will help improve monitoring for underground nuclear testing. The LLNL research products will facilitate calibration of International Monitoring System (IMS) stations (primary and auxiliary), their surrogates (if not yet installed) and selected gamma stations necessary to complete the above tasks in the ME/NA and FSU regions. Published in 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, LA on 13-15 Sep 2000. U.S. Government or Federal Rights. The original document contains color images.