LLNL Middle East and North Africa and Former Soviet Union Research Database
- LLNL
The Lawrence Livermore National Laboratory (LLNL) Ground-Based Nuclear Explosion Monitoring (GNEM) R and 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 in addition to maintaining detailed quality control and metadata. Using the SRKB framework, they are combining travel-time observations, event characterization studies, and regional tectonic models to assemble a library of ground truth information and phenomenology 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 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. They present expanded lookup tables for critical station parameter information (including location and response) and a new integrated and reconciled event catalog dataset including specification of preferred origin solutions and associated phase arrivals for the complete PDE, EDR, CMT, ISC and selected regional catalogs. In addition to an overview of selected datasets and individual research products, they present an overview of their visualization, integration, and organizational processes. Development of these processes and the LLNL SRKB was necessitated by both the very large amount of data and information involved (over 1.5 TB) and the varied data and research result formats utilized. Products contained and organized within the LLNL SRKB are grouped in 5 major categories: (1) Reference contextual information and lookup tables; (2) Ground truth and regionalization data; (3) Event location products; (4) Event identification products; and (5) Visualization and data manipulation processes.
- Research Organization:
- Lawrence Livermore National Lab., CA (US)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP) (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 791761
- Report Number(s):
- UCRL-JC-138993
- Country of Publication:
- United States
- Language:
- English
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