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  • 1
    Electronic Resource
    Electronic Resource
    On intermediate-term earthquake prediction in central Italy (1990)
    Springer
    Pure and applied geophysics 134 (1990), S. 79-92 
    Details
    ISSN: 1420-9136
    Keywords: Seismology ; earthquake prediction ; self-similarity ; algorithm CN ; Central Italy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The Time of Increased Probability (TIP) for the occurrence of a strong earthquake is determined in Central Italy. This is done with an algorithm that has been successfully applied in other regions of the world (algorithm CN, from the initials of California and Nevada, where the first diagnoses of TIPs were made). The use of normalized functions allows direct application of the orginal algorithm to the new region being studied, without anyad hoc adjustment of the parameters. Retrospective analysis carried on until 1986 shows that TIPs occupy 26 percent of the total time considered and precede four out of five strong earthquakes. Forward monitoring indicates the possible existence of a TIP started in May 1988. Several tests indicate that the results obtained are quite stable, even when using catalogues from different agencies. Apart from obvious practical interest, this research is essential for the worldwide investigation of self-similarity in the origin of strong earthquakes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00878081
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Intermediate-term prediction of occurrence times of strong earthquakes (1988)
    [s.l.] : Nature Publishing Group
    Nature 335 (1988), S. 690-694 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Pattern recognition procedures for infrequent events are adapted to the problem of identifying patterns of clustering of small- and intermediate-scale seismicity before large earthquakes. Identification procedures derived from analysis of large California and Nevada earthquakes yield a high success ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/335690a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Bursts of aftershocks, long-term precursors of strong earthquakes (1980)
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 259-263 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Earthquakes that are followed within a short time by abnormally large numbers of aftershocks are hypothesised to be long-term precursors of stronger earthquakes. In a test of the hypothesis, 18 out of 23 strong earthquakes, in five regions worldwide, were predicted retrospectively. In comparison ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/283259a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Numerical modeling of block structure dynamics: dependence of a synthetic earthquake flow on the structure separateness and boundary movements (1997)
    Springer
    Journal of seismology 1 (1997), S. 151-160 
    Details
    ISSN: 1573-157X
    Keywords: block structure dynamics ; Gutenberg-Richter law ; boundarym movements ; structure separateness
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A seismically active region is modelled as a system of absolutely rigid blocks separated by infinitely thin plane faults. The interaction of the blocks along the fault planes and with the underlying medium is viscous-elastic. The system of blocks moves as a consequence of prescribed motion of the boundary blocks and of the underlying medium. When for some part of a fault plane the ratio of the stress to the pressure exceeds a certain strength level a stress-drop (‘a failure’) occurs (in accordance with the dry friction model), and it can cause a failure in other parts of the fault planes. In the model the failures represent earthquakes. As a result of the numerical simulation a synthetic earthquake catalog is produced. The numerical modelling was carried out for three types of structures with increasing of the structure separateness inside of each type and for two types of boundary movements. A synthetic earthquake flow is characterised by several features including the frequency-magnitude relation (the Gutenberg-Richter curve). When the structure separateness increases the slope of the curve changes monotonously in the same direction for all considered types of structures if the boundary movement is the same. The directions of changing of the slope are opposite for two considered boundary movements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009717607645
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    Paper (German National Licenses)
    Fulltext
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