Impacts of using the rigorous topographic gravity modeling method and lateral density variation model on topographic reductions and geoid modeling: a case study in …

M Lin, X Li - Surveys in Geophysics, 2022 - Springer
Until now, the prismatic mass approximation of the topography and the constant density
assumption have been mostly utilized in topographic reductions, which are rough …

Gravity field modeling using tesseroids with variable density in the vertical direction

M Lin, H Denker, J Müller - Surveys in Geophysics, 2020 - Springer
We present an accurate method for the calculation of gravitational potential (GP), vector
(GV), and gradient tensor (GGT) of a tesseroid, considering a density model in the form of a …

Constrained gravity inversion with adaptive inversion grid refinement in spherical coordinates and its application to mantle structure beneath Tibetan Plateau

Y Zhong, Z Ren, J Tang, Y Lin, B Chen… - Journal of …, 2022 - Wiley Online Library
We develop a novel gravity inversion algorithm in spherical coordinates based on adaptive
inversion mesh refinement and multiphysical parameter constraints. The inversion mesh is …

Crustal and lithospheric mantle structure below the Indian shield based on 3-D constrained gravity inversion and deep neural network approach: geological …

SK Sathapathy, M Radhakrishna - Tectonophysics, 2023 - Elsevier
The Indian shield region comprises of several Archean cratons, Proterozoic mobile belts,
Proterozoic-Phanerozoic rift basins, and volcanic provinces and has been significantly …

Gravity field of a tesseroid by variable-order Gauss–Legendre quadrature

L Qiu, Z Chen - Journal of Geodesy, 2020 - Springer
Abstract The Gauss–Legendre quadrature (GLQ) integration is a numerical method to
calculate the gravitational field of a tesseroid and the approximation error of the GLQ …

Fast calculation of gravitational effects using tesseroids with a polynomial density of arbitrary degree in depth

F Ouyang, L Chen, Z Shao - Journal of Geodesy, 2022 - Springer
Fast and accurate calculation of gravitational effects on a regional or global scale with
complex density environment is a critical issue in gravitational forward modelling. Most …

[HTML][HTML] 任意起伏地形下重力异常三维正演及并行计算

戴世坤, 朱德祥, 张莹, 李昆, 陈轻蕊, 凌嘉宣, 田红军 - 地球物理学报, 2024 - dzkx.org
为了进一步提高空间-波数域三维重力异常正演算法的适用范围和计算效率,
本文采用任意傅里叶变换算法实现了空间-波数域三维重力异常正演, 且在NVIDIA CUDA …

Fast numerical simulation of 2D gravity anomaly based on nonuniform fast Fourier transform in mixed space-wavenumber domain

X Wang, J Liu, S Dai, R Guo, J Li, P Fan - Journal of Applied Geophysics, 2021 - Elsevier
Wavenumber domain gravity modeling is typically based on the fast Fourier transform (FFT),
requiring uniform sampling in both space and wavenumber domains and grid expansion to …

Fast 3D gravity and magnetic modelling using midpoint quadrature and 2D FFT

X Wang, J Liu, J Li, H Chen - Scientific Reports, 2023 - nature.com
To avoid the problem of the traditional methods consuming large computational resources to
calculate the kernel matrix and 2D discrete convolution, we present a novel approach for 3D …

Gravity field forward modelling using tesseroids accelerated by Taylor series expansion and symmetry relations

X Zeng, X Wan, M Lin, W Wang - Geophysical Journal …, 2022 - academic.oup.com
In this study, we developed a new method that can significantly accelerate the forward
modelling of gravity fields generated by large-scale tesseroids while keeping the …