Helicopter Gravity (P196912), 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 Helicopter Gravity (P196912) contains a total of 336 point data values acquired at a spacing between 7500 and 20000 metres. The data is located in WA and were acquired in 1969, under project No. 196912 for Bureau of Mineral Resources (BMR).

重力数据用于监测地球表层下方岩石密度变化所引发的微小重力场变化。所采集的数据将通过标准流程进行处理，以确保记录得到的响应仅源自地下岩石。经处理后得到的数据集可通过解译，揭示地下地质构造。经处理后的数据将由GA地球物理学家开展质量核验，以确保GA发布的最终数据符合使用要求。本次直升机重力数据集（P196912）共计包含336个测点数据，测点间距介于7500米至20000米之间。该数据集采集于西澳大利亚州（Western Australia），采集时间为1969年，隶属于编号为196912的矿产资源局（Bureau of Mineral Resources, BMR）项目。