A FAST COMPONENTWISE GRADIENT METHOD FOR SOLVING STRUCTURAL INVERSE GRAVITY PROBLEM / Akimova Elena N.,Misilov Vladimir E. // . - 2015. - V. , l. . - P. 775-782.

ISSN/EISSN:

1314-2704 / нет данных

Type:

Proceedings Paper

Abstract:

One of the most important geophysical problems is reconstructing a density interface using known gravitational data. This problem is described by a nonlinear integral Fredholm equation of the first kind. After the discretization the problem is reduced to solving a system of nonlinear equations. The real gravity measurements are carried out over a large area producing large-scale grids. Processing of gravity data is time consuming and requires a lot of memory. So it is necessary to develop parallel algorithms for parallel computing systems. In this paper, for solving the inverse gravity problem, a new efficient componentwise gradient method with damping factor is constructed. The parallel algorithm was developed and numerically implemented on the multicore processor incorporated in the Uran parallel computing system at the Institute of Mathematics and Mechanics of the Ural Branch of RAS, Yekaterinburg. The structural gravity problem with real data was solved. The comparison of the new method with the linearized conjugate gradient and local corrections methods in terms of the number of iterations and execution time was carried out.

Author keywords:

structural inverse gravity problem; gradient methods; parallel algorithms; multicore processors

DOI:

нет данных

Web of Science ID:

ISI:000371661600101

Соавторы в МНС:

Другие поля

Поле	Значение
Book-Group-Author	SGEM
Booktitle	SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, SGEM 2015, VOL III
Series	International Multidisciplinary Scientific GeoConference-SGEM
Note	15th International Multidisciplinary Scientific Geoconference (SGEM), Albena, BULGARIA, JUN 18-24, 2015
Organization	Bulgarian Acad Sci; Acad Sci Czech Repub; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci \& Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Inst Water Problem \& Hydropower NAS KR; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci Arts \& Letters; Acad Sci Maldova; Montenegrin Acad Sci \& Arts; Croatian Acad Sci \& Arts; Georgian Natl Acad Sci; Acad Fine Arts \& Design Bratislava; Turkish Acad Sci; Bulgarian Ind Assoc; Bulgarian Minist Environ \& Water
Publisher	STEF92 TECHNOLOGY LTD
Address	1 ANDREY LYAPCHEV BLVD, SOFIA, 1797, BULGARIA
Language	English
ISBN	978-619-7105-33-9
Research-Areas	Geology; Mining \& Mineral Processing
Web-of-Science-Categories	Geosciences, Multidisciplinary; Mining \& Mineral Processing
ORCID-Numbers	Akimova, Elena/0000-0002-4462-5817
Number-of-Cited-References	7
Usage-Count-Since-2013	11
Doc-Delivery-Number	BE4FT