Magnetic raw data (SENSYS MXV3 system entire dataset) during campaign AFM-NIhK-2019-02, Ahlen-Falkenberger Moor (area 194), Germany@en

This is the measurement data from the geomagnetic prospection of the Ahlen-Falkenberger Moor (district of Cuxhaven, Lower Saxony, Germany) as part of the research project Preserved in the bog - relics of prehistoric settlement landscapes in the Elbe-Weser triangle funded by Niedersachsen Vorab. A total of about 800 ha were measured. The aim was to locate archaeological sites as well as landscape features. The measurements were carried out with a MXV3 system from Sensys with 6 FGM650/3 probes with a distance of 0.5m. Each probe consists of 2 sensors with 650mm basedistance and gives the gradient of the vertical component of the magnetic field (Z). The location was measured using a Stonex S10 GPS with Sapos HEPS correction data, resulting in a horizontal position accuracy of 0.01 – 0.02m and an elevation accuracy of 0.02 – 0.03m. The data were exported using DLMGPS (Sensys), whereby the coordinates of the individual probes are automatically determined from the central GPS position on the device. The data were exported without automatic track compensation. Due to the system, the position data is in UTM32/ETRS84 (EPSG 4647) and for conformity with PANGAEA also in WGS84 (EPSG 4326) (conversion is done with spTransform in R).本数据集源自德国下萨克森州库克斯哈文县阿勒恩-法尔肯贝格沼泽（Ahlen-Falkenberger Moor）的地磁勘探工作，系由下萨克森州预拨款（Niedersachsen Vorab）资助的研究项目“保存在泥炭中——易北-威悉三角地带史前聚落景观遗迹”（Preserved in the bog - relics of prehistoric settlement landscapes in the Elbe-Weser triangle）的一部分。本次勘探共完成约800公顷区域的测量，目标为定位考古遗址与景观特征。测量采用Sensys公司的MXV3系统，搭配6台间距为0.5米的FGM650/3型探头；每台探头包含2个基距为650毫米的传感器，可输出磁场垂直分量（Z分量）的梯度值。定位工作采用搭载Sapos HEPS校正数据的Stonex S10型GPS完成，水平位置精度达0.01~0.02米，高程精度达0.02~0.03米。数据通过DLMGPS（Sensys）导出，系统将根据设备搭载的中央GPS位置自动计算各探头的坐标，且本次导出未启用自动轨迹补偿功能。由于系统原生设置，位置数据采用UTM32/ETRS84（EPSG 4647）坐标系；为适配PANGAEA数据平台，同时提供WGS84（EPSG 4326）坐标系数据，坐标系转换通过R语言中的spTransform函数完成。