Principles of magnento-telluric prospecting:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Berlin [u.a.]
Borntraeger
1975
|
| Schriftenreihe: | Geoexploration monographs / 1
5 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VI, 118 S. graph. Darst. |
| ISBN: | 3443130070 |
Internformat
MARC
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| 245 | 1 | 0 | |a Principles of magnento-telluric prospecting |c by Gottfried Porstendorfer |
| 264 | 1 | |a Berlin [u.a.] |b Borntraeger |c 1975 | |
| 300 | |a VI, 118 S. |b graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Geoexploration monographs / 1 |v 5 | |
| 650 | 7 | |a Prospection géophysique |2 ram | |
| 650 | 7 | |a Prospection magnétotellurique |2 ram | |
| 650 | 4 | |a Magnetotelluric prospecting | |
| 810 | 2 | |a 1 |t Geoexploration monographs |v 5 |w (DE-604)BV001902204 |9 5 | |
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Datensatz im Suchindex
| _version_ | 1804116476742860800 |
|---|---|
| adam_text | Titel: Principles of magneto-telluric prospecting
Autor: Porstendorfer, Gottfried
Jahr: 1975
Contents
Foreword..............................VII
1 Introduction ....................................................1
1.1 Aim of electromagnetic investigations in deep prospecting............1
1.2 History ........................................................5
2 The natural electromagnetic field of the earth........................7
2.1 Sources of natural electromagnetic variations........................7
2.2 Character and spectrum of the natural electromagnetic field............10
3 Basic theoretical problems..........................................15
3.1 Incidence of plane harmonic electromagnetic waves on a plane surface
bounding geological media of any shape............................15
3.2 Quantitative relations of the magneto-telluric field components to the
structure and the resistivities of the geological media..................19
3.2.1 Homogeneous and horizontally stratified half-spaee. Magneto-
telluric sounding and profiling..............................22
3.2.11 Estimation of typical ground parameters....................32
3.2.2 Homogeneous and anisotropic, and horizontally stratified ani-
sotropic half-space........................................36
3.2.3 Half-space with arbitrary two-dimensional inhomogeneities . . 37
3.2.31 Solutions by means of analytic formulas......................38
3.2.32 Solutions by dividing the underground in discrete grid-points. . 41
3.2.33 Solutions by analog model experiments in an electrolytic bath . 45
3.2.4 Catalogue of computed or measured inhomogeneous or anisotropic
models..................................................45
3.2.41 Distortion of the fields over a two-dimensional vertical contact . 45
3.2.42 Distortion of the fields over a two-dimensional, well conducting
basin....................................................51
3.2.43 Distortion of the fields over a two-dimensional step............51
3.2.44 Distortion of the fields over a two-dimensional anticline .... 55
3.2.45 Distortion of the fields over a dipping two-dimensional structure 55
3.2.5 Magneto-telluric sounding curves over laterally inhomogeneous
or anisotropic media........................................55
VI
Contents
3.2.51 Magneto-telluric sounding curves in the neighbourhood of a two-
dimensional vertical inhomogeneity..........................56
3.2.52 Magneto-telluric sounding curves over two-dimensional dipping
structures................................................56
3.2.53 Magneto-telluric sounding curves over three-dimensional struc-
tures ....................................................60
3.2.54 Magneto-telluric sounding curves over anisotropic, layered media 60
3.2.55 Conclusion as regards geoelectro magnetic investigations over
inhomogeneous and anisotropic media........................61
4 Processing of field records..........................................65
4.1 Determination of the elements of the tensor relation between the field
components by complex polarization vectors........................66
4.2 Determination of the polar diagrams for the tensor coefficients..........72
4.3 Magnetic and electric field ellipses..................................74
4.3.1 Interpretation method of the relative ellipse ................77
4.3.2 Interpretation method of the absolute ellipse ..............79
5 Digital processing of field records....................................81
5.1 Digital processing by time-domain filters............................82
5.2 Digital processing by Fourier analysis..............................86
5.3 Digital processing by statistical frequency analysis....................87
5.4 Digital processing of the elements of the tensor relation between the field
components......................................................91
5.5 Interpretation of magneto-telluric sounding curves by means of computer 93
6 Instruments and methods for field recording..........................95
6.1 Induction coils....................................................95
6.2 Microvariometer with photoelectric feedback........................96
6.3 Electron precession magnetometer..................................97
6.4 Electrode arrangement for the measurement of the electric field .... 98
6.5 Recording instruments............................................99
7 Geological examples.......................100
7.1 Tellurics............................100
7.2 Magneto-tellurics.........................103
7.3 Geomagnetic deep sounding....................107
7.4 AEMAG............................109
8 Concluding remarks on the accuracy of magneto-telluric investigations and
interpretations..........................Ill
literature............................112
Index.............................117
|
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| author | Porstendorfer, Gottfried 1929-2001 |
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| discipline | Physik Bergbau / Hüttenwesen |
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| id | DE-604.BV002027424 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T15:39:07Z |
| institution | BVB |
| isbn | 3443130070 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-001324804 |
| oclc_num | 3035969 |
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| owner_facet | DE-91 DE-BY-TUM DE-19 DE-BY-UBM DE-83 DE-12 DE-188 |
| physical | VI, 118 S. graph. Darst. |
| publishDate | 1975 |
| publishDateSearch | 1975 |
| publishDateSort | 1975 |
| publisher | Borntraeger |
| record_format | marc |
| series2 | Geoexploration monographs / 1 |
| spelling | Porstendorfer, Gottfried 1929-2001 Verfasser (DE-588)1119163897 aut Principles of magnento-telluric prospecting by Gottfried Porstendorfer Berlin [u.a.] Borntraeger 1975 VI, 118 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Geoexploration monographs / 1 5 Prospection géophysique ram Prospection magnétotellurique ram Magnetotelluric prospecting 1 Geoexploration monographs 5 (DE-604)BV001902204 5 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001324804&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Porstendorfer, Gottfried 1929-2001 Principles of magnento-telluric prospecting Prospection géophysique ram Prospection magnétotellurique ram Magnetotelluric prospecting |
| title | Principles of magnento-telluric prospecting |
| title_auth | Principles of magnento-telluric prospecting |
| title_exact_search | Principles of magnento-telluric prospecting |
| title_full | Principles of magnento-telluric prospecting by Gottfried Porstendorfer |
| title_fullStr | Principles of magnento-telluric prospecting by Gottfried Porstendorfer |
| title_full_unstemmed | Principles of magnento-telluric prospecting by Gottfried Porstendorfer |
| title_short | Principles of magnento-telluric prospecting |
| title_sort | principles of magnento telluric prospecting |
| topic | Prospection géophysique ram Prospection magnétotellurique ram Magnetotelluric prospecting |
| topic_facet | Prospection géophysique Prospection magnétotellurique Magnetotelluric prospecting |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=001324804&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV001902204 |
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