Seismic Surface Waves in a Laterally Inhomogeneous Earth:
Surface waves form the longest and strongest portion of a seismic record excited by explosions and shallow earthquakes. Traversing areas with diverse geologic structures, they 'absorb' information on the properties of these areas which is best retlected in dispersion, the dependence of vel...
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Weitere Verfasser: | |
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Format: | Elektronisch E-Book |
Sprache: | English |
Veröffentlicht: |
Dordrecht
Springer Netherlands
1989
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Schriftenreihe: | Modern Approaches in Geophysics
9 |
Schlagworte: | |
Online-Zugang: | BTU01 URL des Erstveröffentlichers |
Zusammenfassung: | Surface waves form the longest and strongest portion of a seismic record excited by explosions and shallow earthquakes. Traversing areas with diverse geologic structures, they 'absorb' information on the properties of these areas which is best retlected in dispersion, the dependence of velocity on frequency. The other prop erties of these waves - polarization, frequency content, attenuation, azimuthal variation of the amplitude and phase - arc also controlled by the medium between the source and the recording station; some of these are affected by the properties of the source itself and by the conditions around it. In recent years surface wave seismology has become an indispensable part of seismological practice. The maximum amplitude in the surface wave train of virtually every earthquake or major explosion is being measured and used by all national and international seismological surveys in the determination of the most important energy parameter of a seismic source, namely, the magnitude M,. The relationship between M, and the body wave magnitude fI1t, is routinely employed in identification of underground nuclear explosions. Surface waves of hundreds of earthquakes recorded every year are being analysed to estimate the seismic moment tensor of earthquake sources, to determine the periods of free oscillations of the Earth, to construct regional dispersion curves from which in turn the crustal and upper mantle structure in various areas is derived, and to evaluate the dissipative parameters of the mantle material |
Beschreibung: | 1 Online-Ressource (304 p) |
ISBN: | 9789400908833 |
DOI: | 10.1007/978-94-009-0883-3 |
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520 | |a Surface waves form the longest and strongest portion of a seismic record excited by explosions and shallow earthquakes. Traversing areas with diverse geologic structures, they 'absorb' information on the properties of these areas which is best retlected in dispersion, the dependence of velocity on frequency. The other prop erties of these waves - polarization, frequency content, attenuation, azimuthal variation of the amplitude and phase - arc also controlled by the medium between the source and the recording station; some of these are affected by the properties of the source itself and by the conditions around it. In recent years surface wave seismology has become an indispensable part of seismological practice. The maximum amplitude in the surface wave train of virtually every earthquake or major explosion is being measured and used by all national and international seismological surveys in the determination of the most important energy parameter of a seismic source, namely, the magnitude M,. The relationship between M, and the body wave magnitude fI1t, is routinely employed in identification of underground nuclear explosions. Surface waves of hundreds of earthquakes recorded every year are being analysed to estimate the seismic moment tensor of earthquake sources, to determine the periods of free oscillations of the Earth, to construct regional dispersion curves from which in turn the crustal and upper mantle structure in various areas is derived, and to evaluate the dissipative parameters of the mantle material | ||
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institution | BVB |
isbn | 9789400908833 |
language | English |
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spelling | Seismic Surface Waves in a Laterally Inhomogeneous Earth edited by V. I. Keilis-Borok Dordrecht Springer Netherlands 1989 1 Online-Ressource (304 p) txt rdacontent c rdamedia cr rdacarrier Modern Approaches in Geophysics 9 Surface waves form the longest and strongest portion of a seismic record excited by explosions and shallow earthquakes. Traversing areas with diverse geologic structures, they 'absorb' information on the properties of these areas which is best retlected in dispersion, the dependence of velocity on frequency. The other prop erties of these waves - polarization, frequency content, attenuation, azimuthal variation of the amplitude and phase - arc also controlled by the medium between the source and the recording station; some of these are affected by the properties of the source itself and by the conditions around it. In recent years surface wave seismology has become an indispensable part of seismological practice. The maximum amplitude in the surface wave train of virtually every earthquake or major explosion is being measured and used by all national and international seismological surveys in the determination of the most important energy parameter of a seismic source, namely, the magnitude M,. The relationship between M, and the body wave magnitude fI1t, is routinely employed in identification of underground nuclear explosions. Surface waves of hundreds of earthquakes recorded every year are being analysed to estimate the seismic moment tensor of earthquake sources, to determine the periods of free oscillations of the Earth, to construct regional dispersion curves from which in turn the crustal and upper mantle structure in various areas is derived, and to evaluate the dissipative parameters of the mantle material Earth Sciences Geophysics/Geodesy Economic Geology Earth sciences Economic geology Geophysics Keilis-Borok, V. I. edt Erscheint auch als Druck-Ausgabe 9789401068857 https://doi.org/10.1007/978-94-009-0883-3 Verlag URL des Erstveröffentlichers Volltext |
spellingShingle | Seismic Surface Waves in a Laterally Inhomogeneous Earth Earth Sciences Geophysics/Geodesy Economic Geology Earth sciences Economic geology Geophysics |
title | Seismic Surface Waves in a Laterally Inhomogeneous Earth |
title_auth | Seismic Surface Waves in a Laterally Inhomogeneous Earth |
title_exact_search | Seismic Surface Waves in a Laterally Inhomogeneous Earth |
title_full | Seismic Surface Waves in a Laterally Inhomogeneous Earth edited by V. I. Keilis-Borok |
title_fullStr | Seismic Surface Waves in a Laterally Inhomogeneous Earth edited by V. I. Keilis-Borok |
title_full_unstemmed | Seismic Surface Waves in a Laterally Inhomogeneous Earth edited by V. I. Keilis-Borok |
title_short | Seismic Surface Waves in a Laterally Inhomogeneous Earth |
title_sort | seismic surface waves in a laterally inhomogeneous earth |
topic | Earth Sciences Geophysics/Geodesy Economic Geology Earth sciences Economic geology Geophysics |
topic_facet | Earth Sciences Geophysics/Geodesy Economic Geology Earth sciences Economic geology Geophysics |
url | https://doi.org/10.1007/978-94-009-0883-3 |
work_keys_str_mv | AT keilisborokvi seismicsurfacewavesinalaterallyinhomogeneousearth |