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An Analysis Of Seismic Hazards In Indiana, Jennifer Haase, Robert Nowack, Chi Hyun Park, Alison Hunyar, John Hill, Michael Hamburger
An Analysis Of Seismic Hazards In Indiana, Jennifer Haase, Robert Nowack, Chi Hyun Park, Alison Hunyar, John Hill, Michael Hamburger
JTRP Technical Reports
Current USGS probabilistic seismic hazard estimates (Frankel et al., 2002) show a higher seismic hazard in southwestern Indiana than for the rest of the state. This is expected based on past work documenting large pre-historic events in the Wabash Valley, and also based on isoseismal levels of shaking from the New Madrid 1811-1812 earthquakes. When assessing the hazard on a county by county basis, the local soil conditions produce amplification of shaking in regions with soft or unconsolidated sediments relative to firm-rock sites. We have reproduced the probabilistic seismic hazard calculation following the USGS methodology for the state of Indiana …