Canberra Gravity (P196718), 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 Canberra Gravity (P196718) contains a total of 1030 point data values acquired at a spacing between 50 and 300 metres. The data is located in ACT, NSW and were acquired in 1967, under project No. 196718 for Bureau of Mineral Resources (BMR).

重力数据用于测量地球表层下方岩石密度变化所引发的微小重力变化。所采集的数据将采用标准化流程进行处理，以确保所记录的响应仅源于地下岩石的作用。由此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核验，以确保GA发布的最终数据满足使用需求。本堪培拉重力数据集（Canberra Gravity，编号P196718）共计包含1030组测点数据，测点间距介于50米至300米之间。该数据集覆盖澳大利亚首都领地（Australian Capital Territory, ACT）与新南威尔士州（New South Wales, NSW），采集工作于1967年依托编号为196718的项目开展，服务方为矿产资源局（Bureau of Mineral Resources, BMR）。