Survey Report For IAGP Work At Casey, 1984

A report on the survey and navigational support for the International Antarctic Glaciological Project (IAGP) provided by the Division of National Mapping. Includes detailed surveying results from the four traverses carried out, and precise details of the cane locations.The document indicates that the following work was carried out:1) Carry out a gravity survey on strain grids SGA, SGP, SGB, SGQ, SGR and SGD.2) Using helicopter mounted ice radar, extend the detailed radio-echo sounding of the Vanderford Glacier from the 1982/1983 summer programme to cover the remainder of the glacier. Surface measurements of gravity and barometric elevation to be made along the major radar flight lines.3) Glacier movement survey to be made near Naupt Nunataks with measurements at markers at the beginning and end of the season.4) The location of several islands to be determined by DME equipment or JMR Doppler satellite equipment. At least one of Hatch Islands or Ivanhoe Head to be determined and a section of coastline on the northern part of Law Dome to be determined.5) Two different types of mechanical coring drills to be tested on the ice sheet inland from Casey.6) Re-survey of the 1978 and 1979 traverse line to about 74 degrees S latitude. A secondary objective is the continuation of the surveys on the Law Some east of Casey.7) A preparatory traverse, the aim of which is to dump fuel in the region of V150 and V250, 400-500km inland from Casey in support of the spring traverse and to carry out a full measurement programme along the route to check all equipment and techniques.8) Traverses will be restricted to the Law Dome with the main aim of extending the marker network on the eastern side of Law Dome and to establish new markers in the south western quadrant.9) Traverse to re-measure the 1978 and 1979 line of markers. Excess fuel following the re-survey of the southern route should be dumped at BO29 to assist the 1985 program which will re-survey the western route.10) Three automatic weather stations will be supplied for installation along the traverse route. One station is to be deployed during the autumn traverse, south of Casey at A028. The other two stations are to be deployed during the spring/summer traverse at GC41 and GC46.11) A cooperative programme with a Chinese glaciologist will investigate accumulation, metamorphisms and densifications of snow on Law Dome.12) Observations of sea ice thickness at Casey.13) Magnetic declination observations to be made along the southern traverse. Bureau of Mineral Resources will supply equipment to be used.This document has been scanned and is available for download from the provided URL. The dataset download contains the following file:Survey Report For IAGP Work At Casey 1984.pdf本报告为国家测绘局（Division of National Mapping）为国际南极冰川学项目（International Antarctic Glaciological Project, IAGP）提供的勘测与导航支持报告。报告涵盖本次实施的四次穿越勘测的详细勘测成果，以及各类标记杆位置的精确信息。 本报告提及以下已开展的工作： 1) 对应变网格SGA、SGP、SGB、SGQ、SGR及SGD开展重力测量。 2) 借助搭载于直升机的冰面雷达，将范德福德冰川（Vanderford Glacier）的详细无线电回声测深工作从1982/1983年夏季项目延伸至覆盖该冰川剩余全域。沿主要雷达飞行航线开展重力与气压高程地表测量。 3) 在诺普特冰原岛峰（Naupt Nunataks）附近开展冰川运动勘测，于考察季的初始与末期分别在标记点处完成测量。 4) 采用测距设备（DME equipment）或JMR多普勒卫星设备（JMR Doppler satellite equipment）确定若干岛屿的地理位置。需至少确定哈奇群岛（Hatch Islands）或艾凡赫角（Ivanhoe Head）其中一处的位置，并勘测劳冰盖（Law Dome）北部区域的一段海岸线。 5) 在凯西站（Casey）内陆的冰盖之上，测试两款不同类型的机械取芯钻机。 6) 对南纬约74度的1978年及1979年穿越航线开展复测。本次工作的次要目标为延续凯西东侧劳冰盖区域的勘测工作。 7) 开展一次预备性穿越勘测，核心任务为在距离凯西内陆400至500公里的V150与V250区域投放燃料，为春季穿越勘测提供后勤保障，并沿该航线开展全套测量流程，以校验所有设备与作业技术。 8) 本次穿越勘测限定于劳冰盖区域，核心目标为拓展劳冰盖东侧的标记点网络，并在西南象限设立全新的标记点。 9) 开展穿越勘测，对1978年及1979年的标记点线路进行复测。南部航线复测后剩余的燃料需投放至BO29区域，以协助1985年开展的西部航线复测项目。 10) 将提供三台自动气象站（automatic weather stations）用于在穿越航线上部署安装。其中一台将在秋季穿越勘测期间部署于凯西以南的A028区域；另外两台将在春夏季穿越勘测期间部署于GC41与GC46区域。 11) 与一名中国冰川学家开展合作研究项目，对劳冰盖区域的积雪累积、变质作用及密实化过程开展调查。 12) 开展凯西站区域的海冰厚度观测。 13) 沿南部穿越航线开展磁偏角（magnetic declination）观测。矿产资源局（Bureau of Mineral Resources）将提供本次观测所需的设备。 本文档已完成扫描，可通过提供的链接下载。本次数据集下载包含以下文件：《1984年凯西站IAGP工作勘测报告》（Survey Report For IAGP Work At Casey 1984.pdf）