Electrical resistivity imaging data for hydrogeological and geological hazard investigations in Taiwan

Published: 10 May 2023| Version 2 | DOI: 10.17632/nkskkcpdg9.2


Electrical resistivity imaging (ERI) data were collected using multi-electrode resistivity instruments with electrodes placed along profiles and connected to cables with connector boxes, which were then connected to a resistivity meter during resistivity measurements. The ERI data for hydrogeological studies includes 5 ERI profiles from Changhua, 33 from Yunlin, 36 from Yilan, 23 from Taichung, 23 from Chiayi and Tainan, and 23 from Taipei basins. In addition, time-lapse ERI profiles are presented for 10 ERI from Yilan, 10 ERI from Pingtung, 11 ERI from Taichung, and 31 ERI from Minzu basins. Moreover, 10 ERI data points were used to detect the Rusui Fault, 12 for the Qishan Fault, 13 for the Yuli Fault, and 25 for the Shanyi Fault. Totally, the data contains 265 ERI profiles with a total survey length of 59,905 m. A single ERI profile contains hundreds to thousands of subsurface apparent resistivity data points. The data was collected between 2010 and 2022 from different regions of Taiwan. Each survey site includes detailed data acquisition and descriptions.


Steps to reproduce

For data processing and inversion, the EarthImager 2D software package was used. Noise was removed from the measured data during data processing. Iterative inversion was used until the misfit between measured and predicted resistivity data reached acceptable levels, where the root mean square (RMS) error is less than 5%, which may exceed for surveys in hard rock and noisy environments.


National Central University


Electrical Method in Geophysics, Hydrogeology, Environmental Hazard, Electrical Impedance Tomography, Subsidence, Groundwater Assessment


Central Geological Survey of Taiwan

102-5226904000-07-01, 103-5226904000-05, 104-5226904000-04-01, 104-5226904000-07-01, 105-5226904000-02-01, 105-5226904000-05-01, 106-5226904000-01-05, 106-5226904000-02-01

National Science and Technology Council (NSTC) of Taiwan

MOST112-2811-M-008-008, MOST105-2221-E-009-054-MY3

Central Geological Survey of Taiwan

107-5226904000-01-02-1, 108-5226904000-01-02-01, 109-5226904000-01-02-01, 110-5726901000-05-01, 111-5726901000-05-01