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  • Seismology
  • Springer  (2)
  • Division of Earthsciences, Seismological Laboratory, California Institute of Technology
  • Dover Publ.
  • 2010-2014
  • 1980-1984  (2)
  • 1950-1954
  • 1980  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A note on the approximate determination of the dispersion of Love waves in a laterally nonhomogeneous layer lying over a homogeneous half-space (1980)
    Springer
    Pure and applied geophysics 118 (1980), S. 1170-1178 
    Details
    ISSN: 1420-9136
    Keywords: Seismology ; Love waves ; Laterally nonhomogeneous layer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Rayleigh's principle and the concept of the local wave number have been utilised for the approximate determination of the dispersion of Love waves propagating in a laterally heterogeneous layer lying over a homogeneous half-space. The shear wave velocity and the rigidity in the surface layer have been assumed to decrease with the increase of the lateral distance from the origin. The range of validity of the dispersion equation obtained by this method has been examined critically. It was found that: (a) for existence of Love waves the minimum value of shear wave velocity in the layer must be less than that in the matter below, and (b) the phase velocity of Love waves decreases with the increase of the lateral distance from the origin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01593057
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  • 2
    Electronic Resource
    Electronic Resource
    The gross features of the lithosphere-asthenosphere system in Europe from seismic surface waves and body waves (1980)
    Springer
    Pure and applied geophysics 118 (1980), S. 1209-1213 
    Details
    ISSN: 1420-9136
    Keywords: Seismology ; Phase velocity dispersion ; Rayleigh waves ; ‘Hedgehog’ inversion method ; Lithosphere-asthenosphere system in Europe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Long-period recordings of dispersive Rayleigh waves along numerous station lines, or ‘profiles’, in Europe have for the first time permitted a uniform inversion of these observations based on a new method of phase velocity regionalization. Regional dispersion relations obtained by this method have then been subjected to a complete inversion procedure commonly known as the ‘hedgehog’ method. The results are presented in a map outlining the thickness of the lower lithosphere (‘lid’) and the shear (S) velocities in both the ‘lid’ and the asthenosphere ‘channel’. A comparison of these results with the minimum compressional (P) wave velocities in the asthenosphere and their corresponding depths provides an estimate of theV p /V s ratio for the asthenosphere in the European area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01593061
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    Paper (German National Licenses)
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