近年来，随着应用领域的扩展，生产实践对大地电磁测深的勘探成效提出了更高要求。为地质解释提供更可靠、更细致的地球物理依据。-In recent years, with the expansion of application fields, the production practice on the exploration of magnetotelluric sounding results and set higher requirements. For the geological interpretation to provide more reliable and more detailed geophysical basis.