PARALLEL ALGORITHMS FOR SOLVING STRUCTURAL INVERSE MAGNETOMETRY PROBLEM ON MULTICORE AND GRAPHIGS PROCESSORS / Akimova Elena N.,Martyshko Peter S.,Misilov Vladimir E. // . - 2014. - V. , l. . - P. 713-720.

ISSN/EISSN:

1314-2704 / нет данных

Type:

Proceedings Paper

Abstract:

The most important geophysical problems are inverse gravimetry and magnetometry problems. Among them are the structural gravimetry and magnetometry problems of finding interfaces between layers with different densities or magnetizations using known gravitational or magnetic data {[}1], {[}2], {[}3]. The gravimetry and magnetometry problems are described by nonlinear integral Fredholm equations of the first kind; they are ill-posed problems. After the discretization of integral operators, the problems are reduced to systems of nonlinear equations with dense matrices. The real gravity and magnetic measurements are carried out over a large area producing large-scale grids. Processing of gravity and magnetic data is time consuming and requires a lot of memory. In this paper, for solving the structural inverse magnetometry problem in a multilayer medium, efficient stable parallel algorithms based on iteratively regularized gradient methods with variable weight factors are proposed. The algorithms were implemented numerically with using new computing technologies on the parallel computing system Uran at the Institute of Mathematics and Mechanics of the UB RAS. The structural magnetometry problem with ``quasi-model{''} data was solved.

Author keywords:

gravimetry and magnetometry; inverse problems; parallel algorithms; multicore and graphics processors

DOI:

нет данных

Web of Science ID:

ISI:000371297900092

Соавторы в МНС:

Другие поля

Поле	Значение
Book-Group-Author	SGEM
Booktitle	GEOCONFERENCE ON INFORMATICS, GEOINFORMATICS AND REMOTE SENSING, VOL I
Series	International Multidisciplinary Scientific GeoConference-SGEM
Note	14th International Multidisciplinary Scientific Geoconference (SGEM), Albena, BULGARIA, JUN 17-26, 2014
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	978-619-7105-10-0
Research-Areas	Computer Science; Geology; Remote Sensing
Web-of-Science-Categories	Computer Science, Interdisciplinary Applications; Geosciences, Multidisciplinary; Remote Sensing
ResearcherID-Numbers	Martyshko, Peter/R-5902-2016
ORCID-Numbers	Akimova, Elena/0000-0002-4462-5817
Number-of-Cited-References	6
Usage-Count-Since-2013	11
Doc-Delivery-Number	BE3UU