DenInv3D: a geophysical software for three-dimensional density inversion of gravity field data

This paper presents a three-dimensional density inversion software called DenInv3D that operates on gravity and gravity gradient data. The software performs inversion modelling, kernel function calculation, and inversion calculations using the improved preconditioned conjugate gradient (PCG) algorit...

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Vydáno v:Journal of geophysics and engineering Ročník 15; číslo 2; s. 354 - 365
Hlavní autoři: Tian, Yu, Ke, Xiaoping, Wang, Yong
Médium: Journal Article
Jazyk:angličtina
Vydáno: London IOP Publishing 01.04.2018
Oxford University Press
Témata:
Algorithms
density inversion
Geodetics
geophysical software
Geophysics
Gravity
gravity gradient
Lagrange multiplier
Linear equations
preconditioned conjugate gradient algorithm
Software
density inversion
geophysical software
preconditioned conjugate gradient algorithm
gravity gradient
gravity
ISSN:1742-2132, 1742-2140
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Shrnutí:This paper presents a three-dimensional density inversion software called DenInv3D that operates on gravity and gravity gradient data. The software performs inversion modelling, kernel function calculation, and inversion calculations using the improved preconditioned conjugate gradient (PCG) algorithm. In the PCG algorithm, due to the uncertainty of empirical parameters, such as the Lagrange multiplier, we use the inflection point of the L-curve as the regularisation parameter. The software can construct unequally spaced grids and perform inversions using such grids, which enables changing the resolution of the inversion results at different depths. Through inversion of airborne gradiometry data on the Australian Kauring test site, we discovered that anomalous blocks of different sizes are present within the study area in addition to the central anomalies. The software of DenInv3D can be downloaded from http://159.226.162.30.
Bibliografie:JGE-101525.R1
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1742-2132
1742-2140
DOI:10.1088/1742-2140/aa8caf