ERT Datasets for the paper of Nickschick et al. (2019) in Solid Earth

Underlying data for the paper Nickschick, T., Flechsig, C., Mrlina, J., Oppermann, F., Löbig, F. &amp; Günther, T. (2019): Large-scale electrical resistivity tomography in the Cheb Basin (Eger Rift) at an ICDP monitoring drill site to image fluid-related structures. Solid Earth. https://doi.org/10.5194/se-2019-38. The paper contains two types of data: DC resistivity (geoelectrics) ERT data in four profiles<br> -------------------------------------------------------<br> P1, P2 and P3 represent classical multi-electrode ERT data with a unit electrode spacing of a=5m using the Wenner array. They are a representative selection of in total 8 profiles measured in the frame of the (German) MSc work of F. Loebig (there called P2, P5 and P7) where also the lithological section (Fig. 2) was developed:<br> 1. P1 between Lesinka and Hnevin, 620m long<br> 2. P2 around the Hartousov mofette, 700m long<br> 3. P3 between Hartousov and Kacerov, 700m long The inversion results are shown in Fig. 6a,b,c. The large-scale dataset represents data from a dipole-dipole experiment that is in detail described in the paper (Figs. 3-5) with the inversion result given in Fig. 7a along with borehole data.<br> For location see Fig. 1. For all four profiles we provide<br> - measured data with electrode positions on top and the electrode array (abmn) along with the resistance below, topography at the bottom<br> - the configuration file for the inversion software BERT (see https://gitlab.com/resistivity-net/bert), we used version 2.2.9 from January 2019<br> - kml/gpx files denoting the positions of the electrode chains (P1-P3) or an Excel file containing the positions in UTM33N Note that for P2 and the large-scale profile the topography needs to be taken into account whereas it is not necessary <br> Users should be able to reproduce the results by calling<br> bert cfgfile all show Gravity data<br> ------------<br> The data represent a two-column file:<br> 1. position along the ERT profile (projected) in metres<br> 2. Bouguer anomaly in mGal See also special README file in the gravity folder.本数据集为Nickschick, T.、Flechsig, C.、Mrlina, J.、Oppermann, F.、Löbig, F. 与 Günther, T. 于2019年发表的论文《埃格尔裂谷海布盆地国际大陆科学钻探计划（International Continental Drilling Program, ICDP）监测钻井点处用于成像流体相关构造的大规模电阻率层析成像》的配套基础数据，论文刊载于《Solid Earth》期刊，DOI为10.5194/se-2019-38。 该论文包含两类数据：直流电阻率（地电学）电阻率层析成像（Electrical Resistivity Tomography, ERT）数据，共计4条测线。 ------------------------------------------------------- P1、P2与P3为采用温纳（Wenner）阵列的经典多电极ERT数据，电极间距为a=5m。该三条测线为F. Löbig的德国硕士学位论文研究项目中实测的8条测线的代表性子集（原硕士研究中记为P2、P5与P7），该项目同时构建了岩性剖面（图2）： 1. P1：位于Lesinka与Hnevin之间，全长620m 2. P2：环绕Hartousov二氧化碳喷溢点（Hartousov mofette），全长700m 3. P3：位于Hartousov与Kacerov之间，全长700m 上述三条测线的反演结果见图6a、b、c。 大规模数据集源自偶极-偶极（dipole-dipole）实验，论文中图3至图5对该实验进行了详细阐述，其反演结果见图7a，同时配套钻孔实测数据。 测线位置详见图1。 针对全部4条测线，我们提供如下资料： - 实测数据：包含顶部的电极点位信息、沿测线排布的电极排列（abmn）、对应的接地电阻值，以及底部的地形数据 - 反演软件BERT的配置文件：本研究使用的是2019年1月发布的2.2.9版本，软件详情参见https://gitlab.com/resistivity-net/bert - 标注电极链位置的kml/gpx文件（适用于P1-P3），或包含UTM33N坐标系下点位信息的Excel文件。 需注意：P2与大规模测线需要进行地形校正，其余测线无需此项操作。 研究者可通过以下命令复现实验结果： `bert cfgfile all show` 重力数据 ------------ 该数据为两列格式的文本文件： 1. 第一列：沿ERT测线的投影位置，单位为米（m） 2. 第二列：布格异常值，单位为毫伽（mGal） 详细说明请参见重力数据文件夹中的专属README文件。