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  • 1
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    Grundlagen der Geophysik (1990)
    Wissenschaftliche Buchgesellschaft
    In:  Darmstadt, Wissenschaftliche Buchgesellschaft, vol. 7, pp. 225, (ISBN 3-7643-7011-4)
    Details
    Publication Date: 1990
    Keywords: Textbook of geophysics
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
    Electronic Resource
    Electronic Resource
    WAVE FRONT INVESTIGATIONS IN MODEL SEISsMOLOGY (1963)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 11 (1963), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: A method is described which allows to measure the elastic wave motion in the “interior” of two-dimensional solid models. It is based on the measurements of the lateral deformations of a plate that are related to the state of compression in the plane of the plate. A capacitive detector measuring the motion has been developed.Wave front studies have been carried out in a half space, in two half spaces in contact and in a single-layered half space. The experimental results are compared with theory. Special attention has been paid to the head wave.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1963.tb02047.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Residual stress features in drill cores (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 99 (1989), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The features caused by residual stresses in carboniferous sandstone drill cores from 5300 m depth were investigated by various methods: strain redistribution after secondary overcoring, anisotropy of ultrasonic wave velocity and its pressure dependence, as well as fracture tests. This was complemented by microscopic inspection of thin sections. Comparison of the different methods applied revealed a remarkably good correlation between principal stress directions. All effects observed can be explained by one common feature of stress redistribution–the formation of microcracks. The crack-closing pressure derived from acoustic velocity measurements, as well as the tensile strength resulting from the Brazilian test, gave an estimate of the magnitude of residual stresses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1989.tb02046.x
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    Paper (German National Licenses)
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