Abstract
The Nuclear Explosion Database (NEDB) project has provided access
to source parameter data and associated waveforms for worldwide nuclear
explosions, as documented in a series of reports (e.g., Yang et al.
2000). These NEDB data are available online at http://www.rdss.info/
(access currently restricted to authorized users pending open release
of all data). As described in Bahavar et al. (2007), access to the
data has recently been upgraded; and, in some cases, events have
been added or the associated source parameters have been refined
utilizing new information sources (e.g., Department of Energy - DOE
2000; Springer et al. 2002; Khalturin et al. 2005; Bennett et al.
2006; Defense Threat Reduction Agency - DTRA 2008; Kim and Richards
2007). In addition to performing a range of QA/QC checks on the source
data (e.g., comparisons with satellite imagery), station calibration
and response information have been improved to make archived waveform
data from the NEDB more useful to the research community. More specifically,
an analyst-reviewed digital waveform archive, consisting of over
120,000 nuclear explosion recordings, has been implemented for online
access. The focus of this paper is on 1) identification of preferred
ground truth solutions for nuclear explosions, 2) recent improvements
to NEDB event database access and documentation, 3) expanded event
analysis options (e.g., display of station travel-time residuals),
and 4) enhancements to display, review, and retrieve waveform data.
While the discussion that follows tends to emphasize underground
nuclear explosions because of their interest to the seismological
community, it should be noted that the NEDB also includes data on
atmospheric (including some with seismic waveform data), underwater,
and high-altitude nuclear tests. 10.1785/gssrl.81.1.12
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