자원환경지질 (Economic and Environmental Geology)
- 제22권3호
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- Pages.267-276
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- 1989
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- 1225-7281(pISSN)
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- 2288-7962(eISSN)
반복적(反復的) 역산법(逆算法)에 의(依)한 중력자료(重力資料)의 해석(解析)에 관(關)한 연구(硏究)
A Study on Interpretation of Gravity Data by using Iterative Inversion Methods
- Roh, Cheol-Hwan (Dept. of Mineral resources Eng., Hanyang Univ.) ;
- Yang, Sung-Jin (Dept. of Mineral resources Eng., Hanyang Univ.) ;
- Shin, Chang-Soo (Dept. of Mineral resources Eng., Hanyang Univ.)
- 발행 : 1989.06.30
초록
This paper presents results of interpretaton of gravity data by iterative nonlinear inversion methods. The gravity data are obtained by a theoretical formula for two-dimensional 2-layer structure. Depths to the basement of the structure are determined from the gravity data by four interative inversion methods. The four inversion methods used here are the Gradient, Gauss-Newton, Newton-Raphson, and Full Newton methods. Inversions are performed by using different initial guesses of depth for the over-determined, even-determined, and under-determined cases. This study shows that the depth can be determined well by all of the methods and most efficiently by the Newton-Raphson method.
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