Fast and Stable Two-Dimensional Inversion of Magnetotelluric Data
نویسندگان
چکیده
منابع مشابه
Two - dimensional magnetotelluric inversion of blocky geoelectrical structures
of the traditional smooth inversion this information is provided as [2J The two-dimensional (2-D) magnetotelluric inverse problem an assumption that the solution, the geoelectrical model in the MT has been addressed by several authors. The most well-known case, should be represented by smooth functions. At the same time, approaches are the search for a smooth model [de Groot-Hedlin in some geol...
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Int erp retation of magneto telluri c data over inhomogeneous geolog ical st ructures is st ill a challenging problem in geophysical exploration. We have developed a new 3-D MT inversion method and a computer code based on full nonlinear conjugate gradient inversion and quasi analyt ical approximation for forward modeling solut ion. Appli cat ion of the QA approximation to forward model ing a...
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Inversion of MT data is an inherently nonunique and unstable problem due to the ill-posedness of the electromagnetic inverse problem. A variety of models may fit the data very well. To overcome this illposed nature of the inverse problem, we use Tikhonov’s regularization in which the ill-posed problem is replaced by a family of well-posed problems. We also analyze the behavior of the Tikhonov r...
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Remnant magnetization causes a change in the direction and intensity of the magnetization vector. If inversion is performed regardless of remnance, in some cases it may have unreliable and misleading results. For inversion with respect to remnant magnetization, several solutions have been proposed so far, one of which is to convert the data of total magnetic field into data that is independent ...
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MT2DInvMatlab is an open-source MATLAB software package for two-dimensional (2D) inversion of magnetotelluric (MT) data; it is written in mixed languages of MATLAB and FORTRAN. MT2DInvMatlab uses the finite element method (FEM) to compute 2D MTmodel responses, and smoothness-constrained least-squares inversion with a spatially variable regularization parameter algorithm to stabilize the inversi...
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ژورنال
عنوان ژورنال: Journal of geomagnetism and geoelectricity
سال: 1997
ISSN: 0022-1392
DOI: 10.5636/jgg.49.1469