Onset Graphic

Vertical Seismic Array: Sassafrass Ridge, Fulton County, KY

Drilling with non-traditional mud-rotary techniques.

9-Component Kinemetrics K-2 Accelerograph w/ onboard FBA-23 accelerometer

250 m borehole w/ FBA-23DH

Link to description of the new DOE Deephole Seismic Observation Station.

The thick Mississippi embayment soil/sediment deposits are expected to produce significant ground-motion site effects. Consequently, the Geophysics Group intends to drill and case a 640 meter borehole through the sediment overburden and into bedrock for the establishment of a vertical seismic observatory in which to rigorously evaluate the soil transfer function of the unlithified post-Paleozoic sediments at a site near the center of the New Madrid seismic zone (NMSZ). Work is set to begin in the early autumn of 2006. The site will be adjacent to VSAS (see map to the left).

Details of the station may be found by clicking the map on the left.

Details of UK's Strong Motion Network may be found by clicking here.