Using integrated geophysics data set to delineate Phetchabun active fault in Thailand

More than 200 gravity reading points along two profiles at location 1 and 2 were carried out perpendicular to the main traces of the fault in west-east profiles. The detail needed with separation between stations was 5 m. The 2D ERT data were collected along two profiles. The dipole-dipole array configuration was used with electrode spacing 3 and 5 m and the length is 141 and 235 m respectively. The 3D ERT data were collected along two profiles. The pole-pole array configuration was used with electrode and line spacing at 5 m respectively. The survey area was 115X15 m.在1号与2号测点区域内，沿垂直于断层主迹线的东西向两条测线，共完成200余个重力测点的测量工作，测点间距需控制为5米。本次采集了沿两条测线的二维电阻率层析成像（2D ERT）数据，采用偶极-偶极排列装置，电极间距分别为3米与5米，单条测线长度分别为141米和235米。同时采集了沿两条测线的三维电阻率层析成像（3D ERT）数据，采用极-极排列装置，电极间距与测线间距均为5米。本次测量区域面积为115米×15米。