Enhancing Seismic Calibration Research Through Software Automation and Scientific Information Management.

摘要

The National Nuclear Security Administration (NNSA) Ground-Based Nuclear Explosion Monitoring Research and Development (GNEMRD) Program at Lawrence Livermore National Laboratory (LLNL) continues to make significant progress enhancing the process of deriving seismic calibrations and performing scientific integration analysis, and information management with software automation tools. Our tool efforts address the problematic issues of very large datasets and varied formats encountered during seismic calibration research. New information management and analysis tools have resulted in demonstrated gains in efficiency of producing scientific data products and improved accuracy of derived seismic calibrations. Data automation facilitates research data integration and validation. This year most of our development work has been directed toward additional automation of our data ingestion capabilities. Our specific automation methodology and tools improve the researchers' ability to assemble quality-controlled research products for delivery into the Knowledge Base (KB). The software and scientific automation tasks provide the robust foundation upon which synergistic and efficient development of GNEMRD Program seismic calibration research may be built. Three new Java programs, BulletinLoader (seismic bulletins) SegmentLoader (seismic waveforms), and MTLoader (moment tensor information) have been developed that replace older C/C++ codes and extend the capabilities of those codes to reduce the amount of required human supervision. This allows resources to be focused on analysis and production of calibration products. The BulletinLoader tool is a Java replacement for the C++ program ORLOADER which we have been using for many years to load earthquake catalogs. Currently, BulletinLoader supports 16 bulletin formats. More importantly, it runs autonomously, retrieving bulletins as they become available on the Internet. BulletinLoader also can retrieve data from remote databases, can be configured to automatically retrieve such data as they are added to the remote database. The SegmentLoader tool is a new Java application that replaces existing (C/C++) applications DDLOAD and UPDATEMRG. SegmentLoader loads waveform data from various flat file formats as well as from remote databases.