YU-LI WANGYeh, Tian Chyi JimTian Chyi JimYehLiu, FeiFeiLiuWen, Jet ChauJet ChauWenWang, WenkeWenkeWangHao, YonghongYonghongHao2023-06-122023-06-122022-12-1600948276https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144518552&doi=10.1029%2f2022GL101278&partnerID=40&md5=b607d9777d77872f0ff95ecd9dc50dc9https://scholars.lib.ntu.edu.tw/handle/123456789/632637This paper exploits triggered lightning as a point source for the basin-scale electromagnetic tomographic survey to image 3-D subsurface electrical properties in basins. This paper further develops a new temporal moment approach, overcoming the difficulties in forward and inverse modeling of 3-D Maxwell’s equations with heterogeneous parameter fields. Using this approach, we find that the influence of a single triggered lightning strike covers a radius of 20–70 km with detectable signals. The cross-correlation analysis between the moment difference of the electric and electric/magnetic property field indicates that the approach is suitable for mapping subsurface electric conductivity ((Formula presented.)) heterogeneity. A numerical experiment with 3-D spatially random parameter fields demonstrates that the method captures the spatial distribution of electric conductivity over large areas with a sparse monitoring network. It reveals the potential of using triggered lightning as a basin-scale electric/magnetic tomography survey.WAVE-FORM INVERSION; ELECTROMAGNETIC DATA; HYDRAULIC TOMOGRAPHY; SENSITIVITY ANALYSIS; 3D INVERSION; FREQUENCY; TRANSPORT; RESERVOIR; FIELD; HEAD[SDGs]SDG6[SDGs]SDG13journal article10.1029/2022GL1012782-s2.0-85144518552WOS:000928052000021https://api.elsevier.com/content/abstract/scopus_id/85144518552