2017年10-12月陕西华阳川示范区1:1万航空磁测原始数据

该数据为2017年10月-12月，采集于北秦岭华阳川地区，中国自然资源航空物探遥感中心实测1:1万航磁数据。本区开展航空物探（重、磁）测量，选用AS350 B3型直升飞机作为作业飞机。航空磁力测量系统的主要仪器设备有HC-2000高精度光泵磁力仪，空中数据收录采样率10次/秒。原始收录的差分GPS数据经解算后为WGS-84坐标系的大地坐标经、纬度，以GPS时间为准装入数据库。此后，按要求将WGS-84坐标系的地理经、纬度坐标投影转换成UTM投影平面直角坐标系的北向距(Y)、东向距(X)。该数据主要用于进行复杂地区航磁方法有效性和适用性试验研究，该数据可对工区的地层、岩体进行定性分析，为后续三维地质建模提供约束依据。该数据集为协议共享。

This dataset comprises 1:10000-scale airborne magnetic survey data collected in October–December 2017 at the Huayangchuan area, North Qinling Mountains, by the Airborne Geophysical and Remote Sensing Center of China Natural Resources.

Airborne geophysical (gravity and magnetic) surveys were conducted in this area, with an AS350 B3 helicopter selected as the operational platform. The main instruments of the airborne magnetic survey system include the HC-2000 high-precision optically pumped magnetometer, with an airborne data acquisition sampling rate of 10 Hz.

The originally acquired differential GPS data were solved to obtain geodetic longitude and latitude under the WGS-84 coordinate system, and were imported into the database using GPS timestamps as the time reference. Subsequently, the geographic longitude and latitude coordinates under the WGS-84 coordinate system were projected and converted into the north-south distance (Y) and east-west distance (X) of the UTM projected planar rectangular coordinate system as specified.

This dataset is primarily used for experimental studies on the effectiveness and applicability of airborne magnetic methods in complex terrain regions. It can be utilized to qualitatively analyze strata and rock masses within the survey area, providing constraint foundations for subsequent 3D geological modeling. This dataset is available for protocol-based sharing.