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 int