Seismic Surface Waves in a Laterally Inhomogeneous Earth

Buch | Softcover

304 Seiten

2011 | Softcover reprint of the original 1st ed. 1989
Springer (Verlag)
978-94-010-6885-7 (ISBN)

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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.

1. Theory.- 1. Surface waves in vertically inhomogeneous media.- 2. Surface waves in media with weak lateral inhomogeneity.- 3. Surface waves in media involving vertical contacts.- 4. Computation techniques for surface waves.- 2. Interpretation of Surface Wave Observations.- 5. Recording, identification, and measurement of surface wave parameters.- 6. Methods for quantitative interpretation of observations.- 7. Some results from studies of regional lithospheric structure by surface waves.- References.

Reihe/Serie	Modern Approaches in Geophysics ; 9
Co-Autor	A.L. Levshin
Vorwort	T. Yanovskaya, E.N. Its, A.V. Lander
Zusatzinfo	304 p.
Verlagsort	Dordrecht
Sprache	englisch
Maße	155 x 235 mm
Themenwelt	Sachbuch/Ratgeber ► Natur / Technik ► Natur / Ökologie
	Naturwissenschaften ► Geowissenschaften ► Geologie
	Naturwissenschaften ► Geowissenschaften ► Geophysik
ISBN-10	94-010-6885-2 / 9401068852
ISBN-13	978-94-010-6885-7 / 9789401068857
Zustand	Neuware