Collie - Bridgetown Gravity (P198540), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Collie - Bridgetown Gravity (P198540) contains a total of 200 point data values acquired at a spacing between 400 and 3000 metres. The data is located in WA and were acquired in 1985, under project No. 198540 for Geological Survey of Western Australia (GSWA).

重力数据可反映地球浅表岩石密度变化所引发的微小重力场变动。所采集的数据将通过标准化处理流程进行加工，以确保记录得到的响应仅由地下岩石引起。经处理得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量校验，以确保GA发布的最终数据适配使用需求。本次的科利-布里奇敦重力数据集（P198540）共包含200个测点数据，测点间距介于400米至3000米之间。该数据集采集于西澳大利亚州（Western Australia，简称WA），于1985年由西澳大利亚地质调查局（Geological Survey of Western Australia，简称GSWA）以项目编号198540立项实施采集。