Interpretation of EM sounding data for a stratified earth by means of nonlinear regression

Publisher: University of Toronto in Toronto

Written in English
Published: Pages: 126 Downloads: 699
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Edition Notes


The Physical Object
Pagination126 p.
Number of Pages126
ID Numbers
Open LibraryOL22014019M

When a data set includes missing data, there will naturally be a loss of information in analysis due to missing data, relative to when all data could be observed. This means, the precision of estimates will be reduced (i.e. larger Standard Deviations, Standard Errors and Confidence Intervals), given a greater uncertainty with a reduced data set. Models of the Quantitative Interpretation Regression Model The Ray Description of Almost-Stratified Medium Ray Tomographic Functional in the Dynamic and Kinematic Interpretation of the Remote Sounding Data -- Construction of Incident and Reversed Wave Fields in Layered Reference Medium -- Tomography. Sensor and analysis developments for near-earth plasma density investigations. (Report No. NWRACR99R // AFRLVSTR // ADA). & Sentman, D. D. (). Geophysical electromagnetic sounding using HAARP. (Report No. ADA). Nonlinear interations of electromagnetic waves with the auroral ionosphere. 13 th Topical Conference. Interpretation of EM data is usually broken into three steps. The first extracts a set of one or more frequency-dependent response functions from long time series of magnetic and electric field data observed simultaneously at one or more sites through estimation of frequency-domain transfer functions between measured field components.

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Interpretation of EM sounding data for a stratified earth by means of nonlinear regression Download PDF EPUB FB2

Interpretation of EM Sounding Data for a Stratified Earth by Means of Non-Linear Regression; Author Direct inversion methods for electromagnetic soundings have not been used widely for routine interpretation of field data, even though they provide more useful information to the interpreter than do indirect methods, because existing Author: J.

Scott Holladay. Holladay in: "Interpretation of EM Sounding Data for a Stratified Earth by Means of Nonlinear Regression", Research in Applied Geophysics No.

16, JanuaryGeophysics Laboratory, Department of Physics, University of Toronto. * TPLOT is an obsolete geophysics lab public domain DOS software for quick graph plotting. The conventional approach to interpretation of the observed electromagnetic data based on standard 3-D forward modeling and inversion meets significant difficulties because of the enormous amount of computations required in the case of the multitransmitter and multireceiver data acquisition systems typical for modern EM geophysical surveys.

For 1D single inversions of frequency-domain electromagnetic (FDEM) induction data with a horizontal loop transmitter and a horizontal loop receiver and geoelectrical sounding data using a. Accurate layered-earth interpretation of magnetotelluric (MT) apparent resistivity sounding curves distorted by the presence of near-surface, 3-D bodies in an otherwise horizontally stratified Author: Max A.

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For sounding data, these resistivity values are plotted against electrode spacing in a logarithmic format. These procedures are collectively known as data reduction. Converting geophysical sounding data to a subsurface earth model is known as inversion.

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