2019年内蒙古赤峰示范区1:1万直升机航空TEM原始数据

该数据集为2019年中国自然资源航空物探遥感中心实测1:1万航空TEM数据。利用湖南翔为用航空公司小松鼠B3直升机，搭载CHTEM-Ⅱ直升机时间域电磁勘查系统、TRA-3000无线电高度计和RX-410导航定位系统等设备。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117°。对于时间域航空电磁系统，由于早期道信号高频成分丰富，主要反映浅层地电信息；而晚期道中低频成分丰富，主要反映深部地电信息。该数据集通过观测全时间域电磁信号，可以研究地下介质从浅到深的电性分布特征。该数据集可协议共享。

This dataset comprises 1:10,000-scale airborne Transient Electromagnetic Method (TEM) data collected in 2019 by the Airborne Geophysical and Remote Sensing Center of the Ministry of Natural Resources of the People's Republic of China. The data acquisition was conducted using a Eurocopter AS350 B3 helicopter operated by Hunan Xiangwei Aviation Co., Ltd., which was fitted with the CHTEM-II airborne time-domain electromagnetic survey system, TRA-3000 radio altimeter, RX-410 navigation and positioning system, and other relevant equipment. The dataset uses the China Geodetic Coordinate System 2000 (CGCS2000), the 1985 National Height Datum, and the Gauss-Krüger projection with a central meridian of 117°. For airborne time-domain electromagnetic systems, early-time channels are rich in high-frequency components, which primarily reflect the geoelectrical information of shallow subsurface formations; while late-time channels are abundant in low-frequency components that mainly reveal the geoelectrical characteristics of deep subsurface formations. By observing full time-domain electromagnetic signals, this dataset enables research on the electrical distribution features of underground media from shallow to deep depths. This dataset is available for sharing via formal agreements.

搜集汇总

背景与挑战

背景概述

该数据集是2019年在内蒙古赤峰示范区采集的1:1万比例尺直升机航空时间域电磁（TEM）原始数据，使用CHTEM-Ⅱ系统等设备测量，分辨率20米，采用2000国家大地坐标系和1985国家高程基准。数据集旨在通过全时间域电磁信号观测，研究从浅层到深层地下介质的电性分布特征，适用于地球科学和勘探地球物理学领域，并可通过协议共享。