Sydney to Lord Howe, Norfolk Islands Isogal Ties (P198290), 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 Sydney to Lord Howe, Norfolk Islands Isogal Ties (P198290) contains a total of 1 point data values acquired at a spacing of None metres. The data is located in NSW and were acquired in 1982, under project No. 198290 for Bureau of Mineral Resources (BMR).

重力测量数据用于捕捉地球表层下方岩石密度变化引发的微小重力场变化。所采集的数据需经标准流程处理，以确保记录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。GA地球物理学家会对处理后的数据开展质量核查，确保GA发布的最终数据符合使用要求。本数据集为悉尼至豪勋爵岛、诺福克岛重力等值线联测数据（P198290），共包含1组测点数据，测点布设间距未明确。该数据采集于新南威尔士州（New South Wales, NSW），采集时间为1982年，隶属于编号为198290的矿产资源局（Bureau of Mineral Resources, BMR）项目。