2018年9月-11月新疆启鑫示范区1:5万航磁三分量△T航磁异常100米网格数据

该数据集为2018年9月-11月，中国自然资源航空物探遥感中心实测1:5万航磁三分量△T数据。利用中国飞龙通用航空公司运12飞机（编号B-3750），在新疆哈密机场，搭载AGS-863航空三分量磁力仪、AGS-863航磁三分量数据收录&补偿系统、IGI飞行姿态测量系统，HC-2000光泵磁力仪、CG-T3.0无线电测高仪、差分GPS卫星导航定位系统等设备。航磁三分量数据预处理主要操作包括数据正常场校正（采用2015年IGRF模型逐点计算正常场进行校正）、磁日变校正、滞后校正、航磁水平调整。数据集采用2000国家大地坐标系，1985国家高程，高斯-克吕格投影，中央经线93°。将处理后的航磁ΔT数据由GeoProbe Mager 4.0软件系统中的测线数据网格化模块计算获得网格数据，网格间距100m×100m。该数据集较为清晰的展现了启鑫示范区的磁场面貌，受白山大断裂以及疏勒河大断裂控制，航磁异常主要呈NE向和E-W向展布。利用该数据集开展了岩性构造推断，并进行了定量解释，辅助进行三维地质建模。该数据集可协议共享。

This dataset comprises 1:50,000-scale airborne magnetic three-component ΔT data measured by the China Natural Resources Aero-Geophysical and Remote Sensing Center from September to November 2018. The data was collected using a Y-12 aircraft (registration number B-3750) operated by China Flying Dragon General Aviation Co., Ltd., which departed from Hami Airport in Xinjiang and was equipped with instruments including the AGS-863 airborne three-component magnetometer, AGS-863 airborne magnetic three-component data acquisition & compensation system, IGI flight attitude measurement system, HC-2000 optical pumping magnetometer, CG-T3.0 radio altimeter, and differential GPS satellite navigation and positioning system. The main preprocessing steps for the airborne magnetic three-component data include normal field correction (calculated point-by-point using the 2015 IGRF model), magnetic diurnal variation correction, lag correction, and airborne magnetic horizontal adjustment. The dataset adopts the China Geodetic Coordinate System 2000 (CGCS2000), 1985 National Elevation Datum, Gauss-Krüger projection, with a central meridian of 93°. The processed airborne magnetic ΔT data were gridded using the line data gridding module in GeoProbe Mager 4.0 software, resulting in grid data with a spacing of 100 m × 100 m. This dataset clearly presents the magnetic field characteristics of the Qixin Demonstration Area, which is controlled by the Baishan Fault and Shulehe Fault, with airborne magnetic anomalies mainly distributed in NE and E-W trends. This dataset has been used for lithologic and structural inference, quantitative interpretation, and auxiliary 3D geological modeling, and is available for sharing via formal agreement.

搜集汇总

背景与挑战

背景概述

该数据集是2018年9月至11月在新疆若羌县启鑫示范区采集的1:5万航磁三分量△T航磁异常数据，以100米网格形式提供，由自然资源航空物探遥感中心使用专业航空设备测量并经过严格预处理。数据质量高，平均飞行高度303米，定位精度优于0.021米，总精度1.64nT，主要用于地质结构推断、定量解释和三维地质建模。