GSWA Holleton North totalcount grid geodetic

This GSWA Holleton North totalcount grid geodetic is an airborne-derived radiometric total count window countrate grid for the Holleton North, 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 total count (K), total count (U) and total count (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 Holleton North totalcount grid geodetic has a cell size of 0.001 degrees (approximately 103m). The data are in units of counts per second (cps). The data used to produce this grid was acquired in 1997 by the WA Government, and consisted of 4255 line-kilometres of data at 400m line spacing and 40m terrain clearance.

本GSWA霍尔顿北总计数网格大地测量数据集，是为1997年西澳大利亚州（WA）霍尔顿北地区航空放射性测量项目构建的航空衍生放射性总计数窗口计数率网格。放射性测量法，亦称伽马能谱法（gamma-ray spectrometric method），通过探测地表附近的伽马射线，测量由钾（K）、铀（U）和钍（Th）自然放射性衰变产生的伽马射线的自然变化。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自地下岩石的放射性信号。经处理后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霍尔顿北总计数网格大地测量数据集的网格单元尺寸为0.001度（约103米），数据单位为每秒计数（counts per second，简称cps）。本网格的数据采集于1997年，由西澳大利亚州政府（WA）完成，共包含4255线公里的测量数据，测线间距为400米，飞行离地高度为40米。