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http://dx.doi.org/10.7582/GGE.2019.22.2.062

A Study on the Resistivity Structure in Central Myanmar Basin using DC Resistivity and Magnetotellurics  

Noh, Myounggun (GEOLUX, Co. Ltd.)
Lee, Heuisoon (GEOLUX, Co. Ltd.)
Ahn, Taegyu (GEOLUX, Co. Ltd.)
Jang, Seonghyung (Korea Institute of Geoscience and Mineral Resources, Petroleum and Marine Division)
Hwang, InGul (Korea Institute of Geoscience and Mineral Resources, Petroleum and Marine Division)
Lee, Donghoon (Korea Institute of Geoscience and Mineral Resources, Petroleum and Marine Division)
Hwang, Seho (Korea Institute of Geoscience and Mineral Resources, Geologic Environment Division)
Publication Information
Geophysics and Geophysical Exploration / v.22, no.2, 2019 , pp. 62-71 More about this Journal
Abstract
We conducted DC resistivity and MT survey to obtain the resistivity structure of the central Myanmar basin. We tried to analyze the underground structure through the resistivity variation of Myanmar by performing representative geophysical survey methods because researches on the electrical resistivity structure are insufficient in Myanmar. The electrical resistivity is expected to be low considering the marine sedimentary rocks composed of shale and sandstone in this area. The DC resistivity and MT survey were carried out using SmartRho of Geolux Co., Ltd. and MTU-5A of Phoenix geophysics Ltd., respectively, to visualize the electrical resistivity structure of study area. DC resistivity and MT survey showed an electrical resistivity less than dozens of ohm-m within the depth of 100 m. In particular, MT survey data were almost similar to TM and TE modes in the frequency range above 1 Hz. The two-dimensional inversion of MT data showed a subsurface structure with low resistivity below 150 ohm-m divided into east-west direction. We confirmed that the inversions of DC resisitivity and MT data along an overlapped survey line represented similar results. In the future, considering the high electrical conductivity, it would be effective to perform DC resistivity and MT survey simultaneously to study the electrical resistivity structure of the central Myanmar basin.
Keywords
DC resistivity; MT; central Myanmar basin; electrical resistivity structure; two-dimensional inversion;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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