Description
Summary:Survey report for Casey Station, 1985, by wintering technical officer G.B. Lawrence. Taken from the survey report: Projected Summer Program It is proposed to accurately survey the bedrock in the Dome summit region as preparatory work for future ice drilling. Ice thickness will be measured by ground based ice radar and contouring carried out by barometric heighting. The testing of a newly designed electro-mechanical drill will also be incorporated into this survey. A survey of raised beaches of the Windmill Islands is planned as well as a preliminary aerial survey of marine exposures near Jacks Donga. Projected Traverse Program It is projected to carry out four glaciological traverses during 1985. The major objective is the re-measurement of ice movement stations along the previously established eastern line at 69 degrees south as well as snow accumulation measurements,gravity and surface observations and a comprehensive drilling program for stratigraphy studies. This is to occur mainly during the spring traverse. AN ice radar survey is to be undertaken on the eastern line as well as on the return journey along the planned parallel offset approximately 50 kilometres north. A secondary objective, but of highest priority for winter, is the establishment of a new line to the east of Law Dome and, time permitting, the re-measurement and possible extension of the GW line to the south-west. During the autumn traverse, generally a "shake-down", the aim is to depot fuel on the eastern line in preparation for the spring traverse and a new line parallel to and to the north of GD03 - GD01 is to be surveyed which would entail emplacement of five new ice movement stations. These stations are to be re-measured in spring.