Horgan, H.; Bannister, S.C. 2004 Explosive source seismic experiments from a sea-ice platform, McMurdo Sound 2003 . Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences science report 2004/15 23 p.
Abstract: Seismic acquisition aboard floating sea-ice platforms currently results in poor quality seismic data. Field tests carried out in Southern McMurdo Sound, Antarctica, during the austral summer of 2003-2004 provided insight into this problem. Current acquisition practices, namely the use of an explosive source suspended in the water column beneath the sea ice, are deemed responsible. Such acquisition practices result in an oscillating bubble or “bubble pulse” which effectively acts as a repeating source. This combines with the phase-distorting properties and coherent noise contributed by the floating ice. Here the field tests and associated data are presented and combined with an overview of the bubble pulse and recommendations for future work. (auth)
