GSQ Walsh Red River total count grid geodetic

This GSQ Walsh Red River total count grid geodetic is an airborne-derived radiometric total count window countrate grid for the Walsh, Red River, Qld, 1992/93 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 GSQ Walsh Red River total count grid geodetic has a cell size of 0.00083 degrees (approximately 90m). The data are in units of counts per second (cps). The data used to produce this grid was acquired in 1992 by the QLD Government, and consisted of 54145 line-kilometres of data at 400m line spacing and 100m terrain clearance.

本GSQ沃尔什-雷德河总计数网格大地测量数据集，是1992/1993年度针对昆士兰州（QLD）沃尔什-雷德河地区开展的航空放射性总计数窗口计数率网格数据。放射性测量方法（伽马能谱法，gamma-ray spectrometric method）通过检测地球表面附近的伽马射线自然变化，来反映由钾（K）、铀（U）与钍（Th）的自然放射性衰变所引发的信号特征。采集所得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。经处理得到的数据集可用于解译，以揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核验，以确保GA发布的最终数据符合使用要求。本GSQ沃尔什-雷德河总计数网格大地测量数据集的网格单元尺寸为0.00083度（约90米）。该数据的单位为每秒计数（counts per second，cps）。本网格的数据由昆士兰州政府于1992年采集，总测线长度达54145线千米，测线间距为400米，飞行离地高度为100米。