Title: Seismic imaging with Thumper for earthquake faults near Marianna, AR (NEES-2014-0878)
Year Of Curation: 2014
Description: Using Thumper, the minivibe from NEES at UT-Austin, we collected 10 km of new high-resolution P-wave seismic reflection data across distinct lineaments marked by large sand blows near Marianna, Arkansas. The goal is to test for the presence of Holocene faulting below the sand-blow lineament 80 km south of the southern end of the New Madrid seismic zone. Finishing the above acquisition a little ahead of schedule we then collected a 1-km P-wave vibroseis profile across the Marianna escarpment which is suspected to overlie an active fault. We imaged the subsurface geology in the 30- to 1000-meter depth range using 5-m geophone and 10-m source intervals. The profiles were collected primarily along rural farm roads in Arkansas. The archived data are in SEG-2 format.
PIs & CoPIs: Robert Williams
Dates: June 02, 2010 - June 10, 2010
Facilities: University of Texas at Austin, TX, United States
Sponsor: USGS, NEHRP, and NSF
Keywords: P-waves,Seismic Hazard,seismic reflection profile