Survey Report - Casey Station, Antarctica, 1985 - by G.B. Lawrence

Survey report for Casey Station, 1985, by wintering technical officer G.B. Lawrence.Taken from the survey report:Projected Summer ProgramIt 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 ProgramIt 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.

1985年凯西站（Casey Station）调查报告由越冬技术官员G.B.劳伦斯（G.B. Lawrence）撰写，内容摘录自该调查报告：

### 夏季计划草案
提议对穹顶峰顶区域的基岩开展精准测绘，作为未来冰芯钻探的前期准备工作。冰厚将通过地面冰雷达（ice radar）进行测量，地形等高线则通过气压高程测量法（barometric heighting）绘制。本次测绘还将纳入一款新型机电钻探设备（electro-mechanical drill）的测试工作。此外，计划对风车群岛（Windmill Islands）的抬升海滩（raised beaches）开展测绘，并对杰克栋加（Jacks Donga）附近的海洋露头（marine exposures）区域开展初步航空勘测。

### 横穿考察计划草案
计划于1985年开展四次冰川学横穿考察（glaciological traverses）。核心目标为：重新测量沿南纬69度先前布设的东部测线的冰运动站点（ice movement stations），同时开展积雪积累量测量（snow accumulation measurements）、重力观测（gravity observations）与地表观测（surface observations），以及用于地层学研究（stratigraphy studies）的综合性钻探计划，上述工作主要将在春季横穿考察期间完成。此外，将在东部测线以及沿计划向北偏移约50公里的平行返程路线上开展冰雷达勘测。
作为次要目标但为越冬期间最高优先级任务的是：在劳穹（Law Dome）东侧布设一条新测线；若时间允许，还将对GW测线进行重新测量，并向西南方向适当延伸。
在秋季横穿考察（一般为“磨合试跑”阶段）中，主要目标为在东部测线预置燃油，为春季横穿考察做好准备；同时将布设一条平行于GD03-GD01且位于其北侧的新测线，并在此路线上设置5个全新的冰运动监测站点，这些站点将在春季进行复测。