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Erkundung oberflächennaher Strukturen und Eigenschaften mit dem elektromagnetischen Reflexionsverfahren

  • F. Thyssen
Conference paper

Summary

In the course of this project a great number of electromagnetic profilings, soundings and measurements in boreholes and in the laboratory were carried out. Most of the investigations were done in soils some also in solid rock.

In the initial phase of the work only a small part of our techniques were available. Therefore major developments of highfrequency devices for the laboratory and field measurements were necessary.

The numerous results of the elctromagnetic measurements can be summarized with certain simplifications in one important aspect. Essentially, the results depend on the water content of the material and the dissolved ions. As the electromagnetic properties strongly depend on the water content and the dissolved ions, the electromagnetic and the d.c. resistivity of soils and solid rock are related with each other. The properties of the samples were measured in the laboratory in the frequency ränge from 10 Hz to 100 MHz. With few exceptions, the resistivity of the samples at 10 Hz is equal to their d.c. resistivity with sufficient accuracy.

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Literatur

  1. Archie GE (1942) The electric resistivity log as an aid in determining some reservoir characteristics. Trans Aime 146: 54–67Google Scholar
  2. Brinkmann R (1978) Apparative Gesichtspunkte zum elektromagnetischen Reflexionsverfahren in verlustbehafteten Medien. Unveröff. Diplomarbeit, Inst. Geophys. MünsterGoogle Scholar
  3. Garotta R, Michon D (1967) Continuous analysis of the velocity function and the move out corrections. Geophys Prosp 15: 584–597CrossRefGoogle Scholar
  4. Gerigk R (1984) Impedanzmessungen an Locker- und Festgesteinen zur Ermittlung von geophysikalisch relevanten Parametern im Frequenzbereich von 10 Hz - 100 Hz. Unveröff. Diplomarbeit, Inst. Geophys. MünsterGoogle Scholar
  5. Juretzka B (1982) Experimentelle Arbeiten zur Weiterentwicklung des elek tromagnetischen Reflexionsverfahrens. Unveröff. Diplomarbeit, Inst. Geophys. MünsterGoogle Scholar
  6. Joermann U (1982) Aufbau und Erprobung eines DK-Meßplatzes für einenFrequenzbereich von 1 MHz - 100 MHz. Unveröff. Diplomarbeit, Inst. Geophys. MünsterGoogle Scholar
  7. Körper R (1983) Ergänzendes automatisches Nivellement zum EMR-Verfahren sowie Versuche zur Kartierung zeitlich veränderter Reflexionsstrukturen. Unveröff. Diplomarbeit, Inst. Geophys. MünsterGoogle Scholar
  8. Looyenga H (1965) Dielectric Constants of Heterogenous Mixtures. Physica 31: 401–406CrossRefGoogle Scholar
  9. Wu TT, King RWP (1965) The cylindrical antenna with nonreflecting resistiveloading. IEEE Transactions an Antennas and Propagation 13: 369–373CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • F. Thyssen
    • 1
  1. 1.Institut für GeophysikWestf. Wilhelms-UniversitätMünsterGermany

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