ENHANCED RESOURCES OF THE SMDC MONITORING RESEARCH PROGRAM FOR SOURCE INFORMATION AND DATA ACQUISITION

(SMDC) provides a range of resources and services for use in nuclear explosion monitoring research and development. R&D. This presentation focuses on recent developments and enhancements to the infrasound, seismic, and hydroacoustic resources, most of which can be accessed from the RDSS website at www.rdss.info. In particular, on-going and recent developments and improvements are related to (1) the nuclear explosion database archive and (2) infrasound signals and associated source information. The RDSS project has traditionally maintained an archive of information on source metadata and seismic waveforms from worldwide nuclear explosions. These resources were previously documented in the year 2000, and we are now completing a major revision and update which includes newly published or revised information about historical explosions, access to additional or corrected waveform data for some explosions, and new data from more recent nuclear tests (e.g., North Korea). In addition to maintaining these research data archives, we have been developing a number of web tools which enable visualization of and easier access to these explosion resources, including tabular-, map-, and imagery-based event selection and comparisons, station coverage and response information, as well as review of data quality and acquisition of the available seismic waveform data. Identification of infrasound events for the RDSS infrasound database has continued. This is based on a search of the RDSS waveform archive for signals that can be associated with recent events from seismic bulletins, volcani