Supplemental Equipment Funding: Central United States Seismic Observatory, Phase II Deep Borehole Instrumentation

This proposal addresses operation and development of regional seismic networks in the Mid-America region of the Advanced National Seismic System (MA-ANSS). This is the largest ANSS region in the contiguous United States and includes the locations of the significant 1811-1812 New Madrid and the 1886 Charleston, South Carolina, earthquakes. The geographical delineation also includes similar geological features that affect ground motion, such as the deep sediment deposits near New Madrid and the coastal plains.