A Fast Algorithm for 3D Focusing Inversion of Magnetic Data and Its Application in Geothermal Exploration

This paper presents a fast focusing inversion algorithm of magnetic data based on the conjugate gradient method, which can be used to describe the underground target geologic body efficiently and clearly. The proposed method realizes an effect similar to matrix compression by changing the computatio...

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Veröffentlicht in:Energies (Basel) Jg. 17; H. 16; S. 4000
Hauptverfasser: Dai, Weiming, Jia, Hongfa, Jiang, Niande, Liu, Yanhong, Zhou, Weihui, Zhu, Zhiying, Zhou, Shuai
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Basel MDPI AG 01.08.2024
Schlagworte:
Algorithms
China
Efficiency
Geology
Geothermal power
Geothermal resources
Gravity
Heat
hot dry rock
large-scale data
Methods
Optimization techniques
physical property inversion
China
Tibetan Plateau
Qinghai China
Yellow River
ISSN:1996-1073, 1996-1073
Online-Zugang:Volltext
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Zusammenfassung:This paper presents a fast focusing inversion algorithm of magnetic data based on the conjugate gradient method, which can be used to describe the underground target geologic body efficiently and clearly. The proposed method realizes an effect similar to matrix compression by changing the computation order, calculating the inner product of vectors and equivalent expansion of expressions. Model tests show that this strategy successfully reduces the computation time of a single iteration of the conjugate gradient method, so the three-dimensional magnetic data inversion is realized under a certain number of iterations. In this paper, the detailed calculation steps of the proposed inversion method are given, and the effectiveness and high efficiency of the proposed fast focusing inversion method are verified by three theoretical model tests and a set of measured data. Finally, the fast focus inversion algorithm is applied to the magnetic data of Gonghe Basin, Qinghai Province, to describe the spatial distribution range of deep hot dry rock, which provides a direction for the continuous exploration of geothermal resources in this area.
Bibliographie:ObjectType-Article-1
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ISSN:1996-1073
1996-1073
DOI:10.3390/en17164000