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  • 11
    Monograph available for loan
    Monograph available for loan
    Orlando [u.a.] : Academic Press
    Call number: M 92.0426 ; 14502
    Type of Medium: Monograph available for loan
    Pages: viii, 328 S. : Abb.
    ISBN: 0121122514
    Series Statement: Computational techniques 4
    Classification: A.2.4.
    Language: English
    Location: Upper compact magazine
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 124 (1986), S. 919-930 
    ISSN: 1420-9136
    Keywords: Earthquake ; energy ; accelerogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract There remains much uncertainty on the absolute elastic wave energy released by fault rupture. Few direct estimates of the partition of seismic wave energy in ground shaking have been made. In this work, ground particle velocities from integrated accelerograms are used to compute the kinetic energy crossing unit area per unit time. Simplified theory for the near-field strong-motion case would appear to give a valid lower energy bound; the wave attenuation does not present a major problem. The partition of energy in predominantly P, S, and surface wave portions, for given frequency windows, is tabulated using strong-motion accelerograms recorded at different azimuths to the fault-sources of six California earthquakes (5.5〈M L〈7.2). Checks against earlier magnitudeM L and momentM 0 correlations indicate significantly higher overall wave energy outputs than expected, but further calibration is needed. The study demonstrates that stable estimates of frequency-dependent seismic wave energies in the nearfield can be obtained from strong-motion records. Hence, energy flux may have a wider application to risk mapping than previously thought. In particular, a shift from peak acceleration scaling to (kinetic) energy inputs for engineering design appears to involve only routine processing.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 122-124 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN several important papers, Gutenberg13 has directed attention to seismic waves recorded as first arrivals at epicentral distances, D, between about 125 and 140 . At the shorter distances in this range the waves arrive between 15 and 20 sec earlier than the normal PKIKP waves. The early onsets ...
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 188 (1960), S. 1176-1177 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Three completely solid models of the Moon have been treated, each with radius, R 1,738 km., and mean density, =3-33 gm./c.c. Model I is a homogeneous sphere having throughout velocities for P and S waves of a = 8-2 km./sec., = 4-7 km./sec., respectively. Since only the differences between the ...
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 1095-1096 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] EXCEPTIONAL atmospheric waves, resembling those ±_j from large nuclear explosions1-6, have been recorded at Berkeley after the Alaskan earthquake of March 28, 1964. This severe earthquake occurred 3,130 km away from Berkeley near the head of Prince William Sound. A preliminary determination ...
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Attempts to derive seismic signals from CP1133 were unsuccessful. Possible experimental errors in previous work are ...
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 207 (1965), S. 967-969 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Revised PKP travel-times are required for two main purposes: in order to derive the structural detail within the core, and in routine computer location of hypocentres of earthquakes. In the latter problem, because of the relatively small gradient of the travel-time curve, PKP observations provide a ...
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 148-150 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This extraordinary discovery confirms the earlier identified2 PKiKP waves, reflected at grazing angles from the ICB (105° 〈 A 〈 110°). It establishes once and for all that the ICB (radius r~ 1,216 km) is sharp3'4 relative to seismic longitudinal waves with periods of order 1 s. It ...
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  • 19
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 116-116 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - The publication (Nature 23 October 1980, p.674) of the Manifesto on the status of science in Spain issued by leading academics and scientists of universities and research institutes is a major event. I would like to make a few comments from the viewpoint of a scientist who has been working ...
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Type of Medium: Electronic Resource
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