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Applications Of Numerical Modelling To Frequency Domain Electromagnetic Techniques For Geophysical Prospecting Anglais
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Book Synopsis APPLICATIONS OF NUMERICAL MODELLING TO FREQUENCY DOMAIN ELECTROMAGNETIC TECHNIQUES FOR GEOPHYSICAL PROSPECTING, anglais by : Pierre Valla
Download or read book APPLICATIONS OF NUMERICAL MODELLING TO FREQUENCY DOMAIN ELECTROMAGNETIC TECHNIQUES FOR GEOPHYSICAL PROSPECTING, anglais written by Pierre Valla and published by . This book was released on 1991 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES METHODES GEOELECTRIQUES QUI CHERCHENT A DETERMINER LA DISTRIBUTION DE RESISTIVITE ELECTRIQUE DU SOUS-SOL SONT L'UN DES MAILLONS IMPORTANTS POUR L'EXPLORATION DES GISEMENTS MINIERS OU DES RESSOURCES EN EAU. CE TRAVAIL TRAITE DES METHODES ELECTROMAGNETIQUES FREQUENTIELLES EN ETUDIANT LES DIFFERENTS ASPECTS DES APPLICATIONS DE LA MODELISATION NUMERIQUE A L'ETUDE DES DISPOSITIFS DE MESURE ET A L'INTERPRETATION DES DONNEES. LES DIFFERENTS MODELES MONODIMENSIONNELS FONT L'OBJET D'UNE ANALYSE ALGORITHMIQUE DETAILLEE. ILS SONT ILLUSTRES PAR DEUX EXEMPLES D'INTERPRETATION POUR LES MODELES TABULAIRES, L'UN POUR L'EXPLORATION D'AMAS SULFURES, L'AUTRE POUR LA CARACTERISATION D'UNE SERIE SEDIMENTAIRE, ET PAR L'ETUDE D'UN DISPOSITIF DE TRANSMISSION ELECTROMAGNETIQUE DE DONNEES POUR LES MODELES CYLINDRIQUES. LA MODELISATION BIDIMENSIONNELLE PAR ELEMENTS FINIS EST ENSUITE TRAITEE, EN MONTRANT LES DEVELOPPEMENTS SPECIFIQUES NECESSAIRES A L'OBTENTION DE RESULTATS FIABLES POUR LES METHODES ELECTROMAGNETIQUES A SOURCE CONTROLEE, PUIS EN L'APPLIQUANT A L'ETUDE DE CAS THEORIQUES. SON UTILISATION POUR L'INTERPRETATION DE DONNEES DE PROSPECTION EST ILLUSTREE PAR UNE ETUDE METHODOLOGIQUE SUR UN PROSPECT MINIER OU DES MESURES FURENT FAITES A LA FOIS EN SURFACE ET EN FORAGE. ENFIN, EN VUE DE DEVELOPPEMENTS FUTURS POUR LA MODELISATION DES TECHNIQUES ELECTROMAGNETIQUES, LA METHODE DES ELEMENTS DE FRONTIERE EST PRESENTEE DANS LE CAS BIDIMENSIONNEL CYLINDRIQUE EN COURANT CONTINU
Book Synopsis Advances in Electromagnetic Geophysical Exploration by : Jin Li
Download or read book Advances in Electromagnetic Geophysical Exploration written by Jin Li and published by Frontiers Media SA. This book was released on 2024-01-19 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic exploration is one of the earliest and most widely used geophysical exploration techniques. Electromagnetic methods, such as magnetotelluric (MT), audio magnetotelluric (AMT), transient electromagnetic method (TEM), and controlled source electromagnetic method (CSEM), have made a great contribution to industrialization and urbanization by discovering underground deposits of various resources. Driven by the latest progress in electronics and intelligent algorithms, electromagnetic exploration is developing at a high speed. Many challenges faced by traditional geophysical methods are now solvable. Emerging sensing technology and signal processing technology greatly improves the accuracy of electromagnetic methods in many applications. At the same time, such technologies promoted the development of new geophysical theories and methods.
Book Synopsis Analytic Comparison of Time- and Frequency-domain Electromagnetic Methods by :
Download or read book Analytic Comparison of Time- and Frequency-domain Electromagnetic Methods written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time- and frequency-domain methods of electromagnetic geophysical prospecting are compared to determine the similarities and differences and to recommend system choices for particular field situations. Only the wire-loop configuration is considered, as this array is quite standard in geothermal prospecting. Comparisons are carried out using hardware and physical considerations, a large catalog of 3-layer model curves, 2D-3D model calculations, and by comparing Fourier transforms and layered inversions of field data from the Randsburg KGRA in California. The results generally indicate that frequency-domain methods offer better resolution and more practical hardware design for long-offset shallow applications. They also have a much better backup in terms of modelling tools for interpretation and history of experience. Transient methods are better suited for deeper probing, for both long- and short-offset applications. Frequency-domain methods are limited by the primary field, which is subject to distortion from near-surface inhomogeneites; this is also the case for early-time transients. Transient measurements in late time are limited by ambient electromagnetic noise and dynamic range of receiving equipment.
Book Synopsis The Theory of Inductive Prospecting by : Alexander A. Kaufman
Download or read book The Theory of Inductive Prospecting written by Alexander A. Kaufman and published by Elsevier Science & Technology. This book was released on 2001 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: An update to a classic reference published fifteen years ago, this publication concerns the theoretical aspects of inductive electromagnetic methods applied in geophysical prospecting. From first principles, the electromagnetic responses of several models are derived and analysed in order to form a strong basis for understanding such phenomenon in practice. The original work has been extended by using modern 3-D modeling capabilities with a special emphasis on airborne applications. Exploration and research geophysicists will appreciate the numerous closed-form and asymptotic electromagnetic expressions for spherical and clylindrical conductors contained within non-conductive and conductive hosts which are described in this volume. Responses based on such expressions are often presented in graphical and tabular form in order to help the reader visualise the significance of the results and in order to facilitate comparisons with physical and numerical modeling results. In contrast to the first edition, key results are summarised at the end of each chapter and old material that has been retained in the new edition has been clarified and in many instances corrected. A new chapter has been written in which an extensive evaluation of several different airborne electromagnetic systems is described. The evaluation was based on the utilization of an advanced 3-D modeling program to simulate complex geoelectrical situations that are of interest in exploration and in airborne resistivity mapping.
Book Synopsis Numerical Simulation in Applied Geophysics by : Juan Enrique Santos
Download or read book Numerical Simulation in Applied Geophysics written by Juan Enrique Santos and published by Birkhäuser. This book was released on 2017-01-13 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the theory of waves propagation in a fluid-saturated porous medium (a Biot medium) and its application in Applied Geophysics. In particular, a derivation of absorbing boundary conditions in viscoelastic and poroelastic media is presented, which later is employed in the applications. The partial differential equations describing the propagation of waves in Biot media are solved using the Finite Element Method (FEM). Waves propagating in a Biot medium suffer attenuation and dispersion effects. In particular the fast compressional and shear waves are converted to slow diffusion-type waves at mesoscopic-scale heterogeneities (on the order of centimeters), effect usually occurring in the seismic range of frequencies. In some cases, a Biot medium presents a dense set of fractures oriented in preference directions. When the average distance between fractures is much smaller than the wavelengths of the travelling fast compressional and shear waves, the medium behaves as an effective viscoelastic and anisotropic medium at the macroscale. The book presents a procedure determine the coefficients of the effective medium employing a collection of time-harmonic compressibility and shear experiments, in the context of Numerical Rock Physics. Each experiment is associated with a boundary value problem, that is solved using the FEM. This approach offers an alternative to laboratory observations with the advantages that they are inexpensive, repeatable and essentially free from experimental errors. The different topics are followed by illustrative examples of application in Geophysical Exploration. In particular, the effects caused by mesoscopic-scale heterogeneities or the presence of aligned fractures are taking into account in the seismic wave propagation models at the macroscale. The numerical simulations of wave propagation are presented with sufficient detail as to be easily implemented assuming the knowledge of scientific programming techniques.
Book Synopsis Numerical Modelling of the Turam Electromagnetic Prospecting Method by : Stephen Collins
Download or read book Numerical Modelling of the Turam Electromagnetic Prospecting Method written by Stephen Collins and published by . This book was released on 1975 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Methods in Applied Geophysics by : Misac N. Nabighian
Download or read book Electromagnetic Methods in Applied Geophysics written by Misac N. Nabighian and published by SEG Books. This book was released on 1988 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotitles written by and published by . This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geophysics & Tectonics Abstracts by :
Download or read book Geophysics & Tectonics Abstracts written by and published by . This book was released on 1987 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :John Trevor Weaver Publisher :Taunton, Somerset, England : Research Studies Press ; New York : Wiley ISBN 13 : Total Pages :340 pages Book Rating :4.3/5 (91 download)
Book Synopsis Mathematical Methods for Geo-electromagnetic Induction by : John Trevor Weaver
Download or read book Mathematical Methods for Geo-electromagnetic Induction written by John Trevor Weaver and published by Taunton, Somerset, England : Research Studies Press ; New York : Wiley. This book was released on 1994 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Abstracts written by and published by . This book was released on 1988 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Application of Spectral Induced Polarization by : Yanzhang Luo
Download or read book Theory and Application of Spectral Induced Polarization written by Yanzhang Luo and published by SEG Books. This book was released on 1998 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors review spectral induced polarization theory and describe some of the SIP method's applications through a discussion of their research in the People's Republic of China. In the first of four chapters, they discuss the electrochemical basis of SIP, offering proof of the validity of using the Cole-Cole model for describing complex resistivity spectra. In the next chapter, which addresses the SIP forward problem, they describe the scale-modeling laws for SIP, various forward algorithms, the behavior and variation laws of SIP anomalies, and effective SIP parameters. The third chapter discusses SIP inversion methods, including several methods of calculating the intrinsic spectral parameters of a polarizable body. In the final chapter, the authors describe their field tests applying the SIP method to prospecting for orebodies and oil and gas reservoirs. The material is introduced in part through a reprinting of a 1959 paper by Volume Editor James R. Wait titled 'The Variable Frequency Method."
Download or read book Petroleum Abstracts written by and published by . This book was released on 1996 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysical Abstracts written by and published by . This book was released on 1985 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Methods in Applied Geophysics by : Misac N. Nabighian
Download or read book Electromagnetic Methods in Applied Geophysics written by Misac N. Nabighian and published by SEG Books. This book was released on 1988 with total page 989 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a slag heap, the result of strip mining, creeps closer to his house in the Ohio hills, fifteen-year-old M. C. is torn between trying to get his family away and fighting for the home they love.
Book Synopsis Innovation in Near-Surface Geophysics by : Raffaele Persico
Download or read book Innovation in Near-Surface Geophysics written by Raffaele Persico and published by Elsevier. This book was released on 2018-10-05 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovation in Near-Surface Geophysics: Instrumentation, Application, and Data Processing Methods offers an advanced look at state-of-the-art and innovative technologies for near surface geophysics, exposing the latest, most effective techniques in an accessible way. By addressing a variety of geophysical applications, including cultural heritage, civil engineering, characteristics of soil, and others, the book provides an understanding of the best products and methodologies modern near surface geophysics has to offer. It proposes tips for new ideas and projects, and encourages collaboration across disciplines and techniques for the best implementation and results. Clearly organized, with contributions from leaders from throughout geophysics, Innovation in Near-Surface Geophysics is an important guide for geophysicists who hope to gain a better understanding of the tools and techniques available. Addresses a variety of applications in near-surface geophysics, including cultural heritage, civil engineering, soil analysis, etc. Provides insight to available products and techniques and offers suggestions for future developments Clearly organized by techniques and their applications
Book Synopsis Petroleum Abstracts. Literature and Patents by :
Download or read book Petroleum Abstracts. Literature and Patents written by and published by . This book was released on 1989 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
