A modified interpolation-iteration method for gravity anomaly continuation from undulating surface to plane

YANG Jing; GUO Liang-Hui

doi:10.11720/wtyht.2022.1403

2022 Vol. 46, No. 1

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YANG Jing, GUO Liang-Hui. 2022. A modified interpolation-iteration method for gravity anomaly continuation from undulating surface to plane. Geophysical and Geochemical Exploration, 46(1): 123-129. doi: 10.11720/wtyht.2022.1403

Citation:

YANG Jing, GUO Liang-Hui. 2022. A modified interpolation-iteration method for gravity anomaly continuation from undulating surface to plane. Geophysical and Geochemical Exploration, 46(1): 123-129. doi: 10.11720/wtyht.2022.1403

A modified interpolation-iteration method for gravity anomaly continuation from undulating surface to plane

School of Geophysics and Information Technology, China University of Geosciences,Beijing 100083,China

Received Date: 22 July 2021

Revised Date: 20 February 2022

Publish Date: 25 February 2022

Abstract

Abstract

Gravity anomaly continuation from undulating surface to plane can provide gravity data on a flat horizontal plane for frequency-domain data processing and inversion. Based on the theory of conventional interpolation-iteration methods, this study proposed a modified interpolation-iteration method by introducing a correction factor of the undulating observation surface in the iteration and correction process. The improved method accelerated the iterative convergence speed and promoted the continuation effects. The theoretical model-based tests show that this method can be used to achieve stable and effective large-span gravity anomaly continuation from greatly undulating surface to plane. The continuation results presented by this method are better than those obtained using conventional interpolation-iteration methods. The application of Bouguer gravity anomaly data of the Sichuan-Yunnan region demonstrates that the modified interpolation-iteration method effectively enhanced anomalous signals and details and can provide reliable data for subsequent processing and interpretation.
- continuation from undulating surface to plane /
- gravity anomaly /
- interpolation-iteration method /
- Sichuan-Yunnan region

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References

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