Finite-element technologies of interpretation of gravity data. Assembly method

Category: 13-3
P.I. Balk, A.S. Dolgal’, T.V. Balk, L.A.Christenko


UDC 550.831



P.I. Balk(1), A.S. Dolgal’(2), T.V. Balk(1), L.A.Christenko(2)


(1) Berlin, Germany

(2) Mining Institute Ural Branch Russian Academy of Sciences, Perm, Russua



In this paper we emphasize main stages and summarize the evolution of finite-element approach to quantitative interpretation of gravity data. Authors have chosen the assembly technologies of inverse problem solutions among known developments as the most suitable for simultaneous accounting of different a priory physical-geological data about modeled objects and additional information about noise properties in observed fields. It is accentuated that according to the set of characteristics these assembly algorithms can be viewed as a principally new generation of minimization methods which are used in geophysics to study the form and attitude position of field sources.

We provide the most comprehensive description of the assembly method as compared to the already published specifications. Various iterative search schemas of allowable solutions of inverse gravity problem and examples of specific techniques of the accounting of a priory limits on parameters of the model of field sources are indicated in this article. It is the first investigation of the possibility  to apply the ideas of assembly approach to the class of hybrid inverse problems with interval assignment of the rock density value for the studied geological objects. Authors present a model and practical examples of 3D modeling of gravity field sources with the use of assembly algorithms.

Keywords: gravitational exploration, finite-element approach, assembly method, modeling, algorithm, geological objects.



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