Raw Helicopter Electromagnetic (HEM) data for Area 109 Hadelner Marsch

The BGR carried out an extensive aerial survey in the area of ​​the Hadelner Marsch in cooperation with the GGA Institute (today LIAG) and the water supply associations Land Hadeln and Wingst. The measurement area Hadelner Marsch (2004) is limited by the Elbe in the north and roughly by the towns of Bederkesa and Lamstedt in the south. The area is about 700 km² and 20 measurement flights with a total profile length of 3019 km (771,397 measurement points) were needed to cover the entire measurement area. The target distance of the 117 ESE-WNW measurement profiles is 250 m, the target distance of the 13 NNE-SSW control profiles is 2000 m. The two ASCII data files contain the raw data and the processed HEM data for five measurement frequencies each (0.4 - 140 kHz).