GSWA Merredin Bruce Rock South uranium grid geodetic

This GSWA Merredin Bruce Rock South uranium grid geodetic is an airborne-derived radiometric uranium window countrate grid for the Merredin-Bruce Rock, WA, 1997 survey. The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of uranium (K), uranium (U) and uranium (Th). 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 GSWA Merredin Bruce Rock South uranium grid geodetic has a cell size of 0.00038 degrees (approximately 39m). The data are in units of counts per second (or cps). The data used to produce this grid was acquired in 1997 by the WA Government, and consisted of 27533 line-kilometres of data at 150m line spacing and 50m terrain clearance.

本GSWA默里丁-布鲁斯罗克南铀大地测量网格，是针对1997年西澳大利亚州（WA）默里丁-布鲁斯罗克地区航空测量所生成的航空衍生放射性铀窗口计数率网格。放射性测量法（亦称伽马能谱法）可探测地表附近伽马射线的自然变化，该变化源于钾（K）、铀（U）和钍（Th）的天然放射性衰变。所采集的数据将通过标准流程进行处理，以确保记录的响应仅源于地下岩石的辐射。经处理后得到的数据集可通过解译揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据符合使用要求。本GSWA默里丁-布鲁斯罗克南铀大地测量网格的格网单元尺寸为0.00038度（约合39米），数据单位为每秒计数（counts per second，简称cps）。本网格所用数据由西澳大利亚州政府于1997年采集，总测线长度达27533线千米，测线间距为150米，飞行离地高度为50米。