Helicopter-borne Magnetics (HMG) German North Sea coast (WMS)

This dataset has been compiled within the BGR project "D-AERO-Auswertung" based on several survey area located along the German North Sea coast. The BGR helicopter (Sikorsky S-76B) is used for airborne geophysical surveying of the Earth’s subsurface. The standard equipment comprises the methods electromagnetics, magnetics and radiometrics. The passive magnetic (HMG) system consists of two Cesium magnetometers, which are located in the HEM flying tube (bird) about 40 m beneath the helicopter as well as in a base station on ground. The results are displayed as maps of the anomalies of the Earth's magnetic total field.本数据集依托德国北海岸沿线的多个调查区域，在BGR项目「D-AERO-Auswertung」内整编完成。本次航空地球物理勘探采用BGR所属的西科斯基S-76B（Sikorsky S-76B）直升机，针对地球地下介质开展探测作业。其标准配置涵盖电磁法、磁法与放射性法三类勘探技术手段。被动磁法（HMG）系统包含两台铯磁力仪，分别安装于直升机下方约40米处的HEM飞行管（bird，业内俗称“鸟吊舱”）内，以及地面基站中。最终探测成果以地球磁场总场异常图的形式呈现。