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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >SEPARATION OF ANOMALOUS AERIAL RADIOSPECTROMETRIC ZONES USING LEAST-SQUARES METHOD ON A SAMPLE AREA IN EGYPT
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SEPARATION OF ANOMALOUS AERIAL RADIOSPECTROMETRIC ZONES USING LEAST-SQUARES METHOD ON A SAMPLE AREA IN EGYPT

机译：最小二乘法在埃及采样区分离异常航空放射光谱区

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摘要

This study deals with using the least-squares method (LSM) to separate the absolute aeroradiospectrometric maps (T.C., ~(40)K, eU, and eTh) into highly radioactive zones and the normal radioactive background of the host rocks. The Gabal Um-Rabul area, selected for testing the efficiency of the present method, lies in the northern part of the Eastern Desert of Egypt and is covered mainly by Precambrian basement rocks, which are unconformably overlain by Phanerozoic sedimentary successions. In the present study, the least-squares (first-order) residual anomaly analysis method was used and contour maps were drawn to delineate the significant aeroradiospectrometric anomalies over the study area. It was found that, the least-squares first-order regional and residual total-count (T.C.) and the three absolute radioelements (K, eU, & eTh) maps of the study area show a high degree of coincidence with the anomalous maps constructed by the conventional statistical methods in terms of the locations, intensities, and trends of anomalous zones. Therefore, it is recommended to apply the least squares method for locating radioelements anomalous zones in any surveyed area.
机译：这项研究涉及使用最小二乘法（LSM）将绝对航空放射光谱图（T.C.，〜（40）K，eU和eTh）分为高放射性区域和主体岩石的正常放射性背景。选择用于测试本方法效率的Gabal Um-Rabul地区位于埃及东部沙漠的北部，主要覆盖有前寒武纪基底岩层，不均匀地覆盖着Phanerozoic沉积演替。在本研究中，使用最小二乘（一阶）残差异常分析方法并绘制等高线图来描绘研究区域内的重大航空放射光谱异常。结果发现，研究区域的最小二乘一阶区域和残差总计数（TC）以及三个绝对放射性元素（K，eU和eTh）图与所构建的异常图高度吻合。通过常规统计方法从异常区域的位置，强度和趋势方面进行分析。因此，建议采用最小二乘法来定位任何被调查区域中的放射性元素异常区域。

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