On selecting the excess density in gravity modeling of inhomogeneous media / Ladovskii I. V.,Martyshko P. S.,Byzov D. D.,Kolmogorova V. V. // IZVESTIYA-PHYSICS OF THE SOLID EARTH. - 2017. - V. 53, l. 1. - P. 130-139.

ISSN/EISSN:

1069-3513 / 1555-6506

Type:

Article

Abstract:

In this paper, a relatively simple and physically solid algorithm is developed for solving the problem of reference density selection for the models of heterogeneous media. The way is suggested for determining the excess density of the individual elements of the structured model against the background varying density of the hosting rocks: in the calculations, the latter should be replaced by the hydrostatic density of the normal model, which only depends on depths. It is shown that the excess density of the elements within the inhomogeneous layer, referred to the depth-varying hydrostatic density of the normal model, has a significantly lower value throughout the entire depth of the studied domain and minimizes the gravitational effect of density contact along a curvilinear boundary. The efficiency of the algorithm is demonstrated by the model example and case study. Within the density model for the lithosphere of the Timan-Pechora plate, the structural layers corresponding to the sedimentary cover, crystalline crust, and upper mantle are isolated. For each of them, the fields are calculated within the gravitational model of a heterogeneous layer with curvilinear boundaries.

Author keywords:

нет данных

DOI:

10.1134/S1069351316060057

Web of Science ID:

ISI:000394342100012

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1555-6506
Research-Areas	Geochemistry \& Geophysics
Web-of-Science-Categories	Geochemistry \& Geophysics
Author-Email	pmart3@mail.ru
ResearcherID-Numbers	Martyshko, Peter/R-5902-2016
Funding-Acknowledgement	Russian Science Foundation {[}14-27-00059]
Funding-Text	The work was supported by the Russian Science Foundation (project no. 14-27-00059).
Number-of-Cited-References	15
Usage-Count-Since-2013	2
Journal-ISO	Izv.-Phys. Solid Earth
Doc-Delivery-Number	EL0WI