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DOI	10.1007/s12040-021-01664-5
	Fast inversion of gravimetric profiles via a modified version of the Pereyra-Rosen algorithm
	Fernandez-Muniz, M. Zulima; Pallero, J. L. G.; Mukerji, Tapan; Fernandez-Martinez, Juan L.
通讯作者	Fernandez-Martinez, JL (corresponding author), Univ Oviedo, Dept Math, Grp Inverse Problems Optimizat & Machine Learning, Oviedo, Spain.
来源期刊	JOURNAL OF EARTH SYSTEM SCIENCE
ISSN	2347-4327
EISSN	0973-774X
出版年	2021
卷号	130 期号:3
英文摘要	In this paper, we present a modified version of the Pereyra-Rosen algorithm to the solution of ill-conditioned linear and nonlinear inverse problems arising in gravimetry. We perform a sensitivity analysis of the solution to the two main tuning parameters of this algorithm, comparing its solution with LSQR and the truncated SVD. First, we show the application to a general-purpose linear system whose system matrix has been created by conditional simulation and whose solution is known and to a synthetic 1D gravimetric problem for two different geological set-ups (smooth Gaussian and blocky geophysical anomalies) in the noise-free and noisy cases. The Pereyra-Rosen algorithm provides very good results using a reduced number of column vectors of the system matrix. We finally show the fast inversion of a real gravity profile in the Atacama Desert (north Chile). The algorithm is well suited for the solution of large-scale ill-conditioned linear problems as the ones encountered in the fine discretization of continuous linear inverse problems in several dimensions and in the iterative linearization of nonlinear inverse problems in several fields of geosciences.
英文关键词	Geophysical inversion Pereyra-Rosen pseudoinverse basin exploration gravimetry
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000693033100002
WOS关键词	TIKHONOVS REGULARIZATION ; GRAVITY-DATA ; DECOMPOSITION ; UNCERTAINTY ; NOISE ; GMRES ; RANK
WOS类目	Geosciences, Multidisciplinary ; Multidisciplinary Sciences
WOS研究方向	Geology ; Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363826
作者单位	[Fernandez-Muniz, M. Zulima; Pallero, J. L. G.; Fernandez-Martinez, Juan L.] Univ Oviedo, Dept Math, Grp Inverse Problems Optimizat & Machine Learning, Oviedo, Spain; [Pallero, J. L. G.] Univ Politec Madrid, ETSI Topog Geodesia & Cartog, Madrid, Spain; [Mukerji, Tapan] Stanford Univ, Dept Energy Resources Engn & Geophys, Palo Alto, CA 94304 USA
推荐引用方式 GB/T 7714	Fernandez-Muniz, M. Zulima,Pallero, J. L. G.,Mukerji, Tapan,et al. Fast inversion of gravimetric profiles via a modified version of the Pereyra-Rosen algorithm[J],2021,130(3).
APA	Fernandez-Muniz, M. Zulima,Pallero, J. L. G.,Mukerji, Tapan,&Fernandez-Martinez, Juan L..(2021).Fast inversion of gravimetric profiles via a modified version of the Pereyra-Rosen algorithm.JOURNAL OF EARTH SYSTEM SCIENCE,130(3).
MLA	Fernandez-Muniz, M. Zulima,et al."Fast inversion of gravimetric profiles via a modified version of the Pereyra-Rosen algorithm".JOURNAL OF EARTH SYSTEM SCIENCE 130.3(2021).