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Open AccessArticle

Practical Tips for 3D Regional Gravity Inversion

by Daniele Sampietro 1,*,† and Martina Capponi 2,†
1
Geomatics Research & Development s.r.l., c/o ComoNExT, Via Cavour 2, 22074 Lomazzo (CO), Italy
2
Dipartimento di Ingegneria Civile e Ambientale (DICA), Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano (MI), Italy
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Geosciences 2019, 9(8), 351; https://doi.org/10.3390/geosciences9080351
Received: 12 June 2019 / Revised: 31 July 2019 / Accepted: 7 August 2019 / Published: 10 August 2019
(This article belongs to the Section Geophysics)
To solve the inverse gravimetric problem, i.e., to estimate the mass density distribution that generates a certain gravitational field, at local or regional scale, several parameters have to be defined such as the dimension of the 3D region to be considered for the inversion, its spatial resolution, the size of its border, etc. Determining the ideal setting for these parameters is in general difficult: theoretical solutions are usually not possible, while empirical ones strongly depend on the specific target of the inversion and on the experience of the user performing the computation. The aim of the present work is to discuss empirical strategies to set these parameters in such a way to avoid distortions and errors within the inversion. In particular, the discussion is focused on the choice of the volume of the model to be inverted, the size of its boundary, its spatial resolution, and the spatial resolution of the a-priori information to be used within the data reduction. The magnitude of the possible effects due to a wrong choice of the above parameters is also discussed by means of numerical examples. View Full-Text
Keywords: inverse gravimetric problem; 3D inversion inverse gravimetric problem; 3D inversion
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MDPI and ACS Style

Sampietro, D.; Capponi, M. Practical Tips for 3D Regional Gravity Inversion. Geosciences 2019, 9, 351.

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