Construction of Regional Ground Truth Databases Using Seismic and Intrasound Data

INTRODUCTION The Comprehensive Test Ban Treaty (CTBT) verification community is concerned with estimating capabilities to correctly identify the sources of regional seismic events whose magnitudes are in the range 2.5 < mb < 4.0. This interest has developed, in part, from the recognition that commercial explosions such as quarry or mine blasts can account for a substantial fraction of the regional seismic activity in this magnitude range in many nations (Richards et al. , 1992). Consequently, a variety of seismic methods have been developed to identify the sources of regional seismic signals generated by commercial explosions as well as those generated by earthquakes (cf., Baumgardt and Ziegler, 1988; Bennett et al. , 1989; Dysart and Pulli, 1990; Harris, 1991; Hedlin et al. , 1989; Stump and Reinke, 1988). Experience has demonstrated that successful application of these methods within one region does not guarantee their global applicability. Therefore, it is necessary to evaluate the...