Gravity anomaly of polyhedral bodies having a polynomial density contrast
MG D'Urso, S Trotta - Surveys in Geophysics, 2017 - Springer
We analytically evaluate the gravity anomaly associated with a polyhedral body having an
arbitrary geometrical shape and a polynomial density contrast in both the horizontal and …
arbitrary geometrical shape and a polynomial density contrast in both the horizontal and …
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 …
assumption have been mostly utilized in topographic reductions, which are rough …
[HTML][HTML] 一种新的三维大地电磁积分方程正演方法
任政勇, 陈超健, 汤井田, 周峰, 陈煌, 邱乐稳, 胡双贵 - 地球物理学报, 2017 - html.rhhz.net
采用规则六面体单元和并矢Green 函数奇异积分等效积分技术, 已有的大地电磁积分正演方法
具有不能有效模拟地下复杂地质体和计算精度偏低的缺点. 本文提出了一种新的三维大地电磁 …
具有不能有效模拟地下复杂地质体和计算精度偏低的缺点. 本文提出了一种新的三维大地电磁 …
Fast 3‐D large‐scale gravity and magnetic modeling using unstructured grids and an adaptive multilevel fast multipole method
Z Ren, J Tang, T Kalscheuer… - Journal of Geophysical …, 2017 - Wiley Online Library
A novel fast and accurate algorithm is developed for large‐scale 3‐D gravity and magnetic
modeling problems. An unstructured grid discretization is used to approximate sources with …
modeling problems. An unstructured grid discretization is used to approximate sources with …
[HTML][HTML] 基于字典学习的音频大地电磁数据处理
汤井田, 李广, 周聪, 任政勇, 肖晓, 刘子杰 - 地球物理学报, 2018 - html.rhhz.net
音频大地电磁(Audio Magnetotelluric, AMT) 信号常常受到持续性人文噪声影响,
这类噪声使用远参考法和Robust 阻抗估计等常规方法往往效果不佳. 为此, 本文从噪声的规律与 …
这类噪声使用远参考法和Robust 阻抗估计等常规方法往往效果不佳. 为此, 本文从噪声的规律与 …
[HTML][HTML] 基于二次场的可控源电磁法三维有限元-无限元数值模拟
张林成, 汤井田, 任政勇, 肖晓 - 地球物理学报, 2017 - html.rhhz.net
本文提出了一种新的混合有限元-无限元三维可控源电磁法(CSEM) 问题快速高精度正演模拟
算法. 首先从电场双旋度方程出发, 推导了水平电偶极子源的二次场边值问题 …
算法. 首先从电场双旋度方程出发, 推导了水平电偶极子源的二次场边值问题 …
Modeling the gravitational field of the ore-bearing asteroid by using the CFD-based method
Y Duan, Z Yin, K Zhang, S Zhang, S Wu, H Li, N Zheng… - Acta Astronautica, 2024 - Elsevier
A gravitational field of an ore-bearing asteroid, which usually has an irregular shape and
heterogeneous density, is a prerequisite for asteroid exploration (eg, space mining) …
heterogeneous density, is a prerequisite for asteroid exploration (eg, space mining) …
Gravity anomalies of arbitrary 3D polyhedral bodies with horizontal and vertical mass contrasts up to cubic order
ABSTRACT A new singularity-free analytical formula has been developed for the gravity
field of arbitrary 3D polyhedral mass bodies with horizontally and vertically varying density …
field of arbitrary 3D polyhedral mass bodies with horizontally and vertically varying density …
[HTML][HTML] 基于电流密度连续性条件的直流电阻率各向异性问题自适应有限元模拟
任政勇, 邱乐稳, 汤井田, 周峰, 陈超健, 陈煌, 胡双贵 - 地球物理学报, 2018 - html.rhhz.net
直流电阻率法被广泛应用在工程和环境及水文地球物理, 野外采矿, 地热探测等领域.
地下岩石常具有层理面和裂缝等具有方向依赖性的结构, 岩石电导率常常呈现各向异性特征 …
地下岩石常具有层理面和裂缝等具有方向依赖性的结构, 岩石电导率常常呈现各向异性特征 …
A new integral equation approach for 3D magnetotelluric modeling
Magnetotelluric method is a technique for imaging the electrical conductivity and structure of
the Earth. It is widely used in mining exploration, the detection of deep geologic structure …
the Earth. It is widely used in mining exploration, the detection of deep geologic structure …