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Russian Journal of Earth Sciences
Journals / Russian Journal of Earth Sciences / Volume 25 Issue 2 / Density Model Creation Based on Separating Gravity Field by Depth
VAK Russia 1.6 UDC 550.312 CSCSTI 37.01 Russian Classification of Professions by Education 05.00.00 Russian Library and Bibliographic Classification 26 Russian Trade and Bibliographic Classification 63 BISAC SCI UDC 55 UDC 550.34 UDC 550.383 CSCSTI 37.15 CSCSTI 37.25 CSCSTI 37.31 CSCSTI 38.01 CSCSTI 36.00 CSCSTI 37.00 CSCSTI 38.00 CSCSTI 39.00 CSCSTI 52.00

DENSITY MODEL CREATION BASED ON SEPARATING GRAVITY FIELD BY DEPTH Density Model Creation Based on Separating Gravity Field by Depth

Published in Russian Journal of Earth Sciences · Volume 25, Issue 2 · Pages 1–6 · Rubric: Special Issue: “Data Science, Geoinformatics and Systems Analysis in Geosciences”
DOI: https://doi.org/10.2205/2025ES000960 · EDN: EKYBST
Received: 15.11.2024 Accepted: 15.04.2025 Published: 23.05.2025 Language of publication: ENG
Authors
PE
Petr Martyshko
ORCID
DE
Denis Byzov
ORCID SPIN
ABSTRACT
As a rule, it is known from a priori data that the studied field anomalies are caused by geological structures located at a certain depth below the day surface. Separation of anomalies of the observed potential field by depth and their connection with deep objects can form the basis of interpretation schemes for modeling problems. The classical method of field separation includes spectral filtering with subsequent analytical continuation of the separated anomalies. We propose an original method of height-based transformations of potential fields based on solving the inverse problem of analytical continuation of harmonic functions from a plane to the “inner” half-space. This problem is reduced to solving the Fredholm integral equation of the first kind for the Poisson integral, which can be used to represent a harmonic function in the “outer” half-space by its boundary values on the plane. The parallel algorithm for solving the integral equation is implemented on graphics accelerators using the NVidia CUDA and AMD ROCm libraries in the application software. The results of the method application are shown on the example of separation of the vertical component of the gravity field in the Bouguer reduction for the Sarginskaya area (Urals, Russia). For this territory, a detailed 3D density model was created by solving the linear inverse problem of gravimetry.
KEYWORDS
analytical continuation of potential fields, linear inverse problem of gravimetry, 3D density model
Funding
This research was funded by Russian Science Foundation, grant number 20-17-00058.
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