Airborne magnetotelluric measurement technology and application based on admittance tensor
Chen Wei
Wang Zhihong
Qi Ping
Sun Donghua
Zhang Weimeng
Cheng Shasha
Peng Lihong
Luo Yan
Abstract：Airborne magnetotelluric method is an airborne frequency-domain electromagnetic method that measures the natural electromagnetic fields.It has the advantages of great detection depth,high measurement effi-ciency,minimal terrain influence,and being environmentally friendly.This paper briefly introduced the develop-ment history and measurement principles of airborne magnetotelluric method.Then introduced the basic concept of admittance tensor and the working methods of airborne magnetotelluric measurement using admittance tensor.Fi-nally,this method was applied to engineering surveys under complex terrain conditions.By analyzing the charac-teristics of inversion resistivity and magnetic susceptibility,effective detection of rock masses and fracture struc-tures was achieved.Application example showed that the airborne magnetotelluric method based on the admittance tensor is sensitive to geoelectric boundary and can be used for detecting near-surface and deep structures in com-plex environmental areas.
Keywords：airborne magnetotelluric methodadmittance tensorresistivity inversion
Publication Date：2025-11-30
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 682-688 )