Seismic Activity in the Transantarctic Mountains -
Results from a Broadband Array Deployment

S. Bannister¹ & B.L.N. Kennett²

¹Institute of Geological and Nuclear Sciences, Lower Hutt - New Zealand
²Research School of Earth Sciences, ANU, Canberra - Australia

Received 8 October 2001; accepted  in revised form 20 April 2002
 

Abstract - Seismic events have been recorded in the Transantarctic Mountains using a temporary 10-station broadband seismometer array. About 50% of a total of 160 events were located to the north of the array, in the vicinity of the David Glacier, inland from the Drygalski Ice Tongue, while 40% were located near the transition between the Mulock glacier and the Ross Ice Shelf, just south of the Skelton glacier. The northern events are roughly aligned in a ESE-WNW direction, sub-parallel to faults which are postulated to lie near to the events, and close to the postulated David glacier lineament. The events may be associated with deep-seated faulting along the lineament, although alternative source mechanisms involving ice movement are also possible.

*Corresponding author (s.bannister@gns.cri.nz)