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    A statistical approach to relationships between fluid emissions and faults: The Sea of Marmara case (2018)
    Elsevier
    In:  Deep Sea Research Part II: Topical Studies in Oceanography, 153 . pp. 131-143.
    Details
    Publication Date: 2021-02-08
    Description: The Sea of Marmara is traversed by the North Anatolian Fault system and also presents abundant emission sites of methane gas into the water column. In order to assess the spatial relationship between gas emissions and active faults, the distribution of distances between gas emission sites and the nearest fault is calculated and compared with the distribution of distances between a uniform random distribution of points (Poisson process representing the null hypothesis of an absence of relationship between gas emissions and faults) and the nearest fault. Interestingly, the distance distribution for the Poisson process is nearly exponential, indicating that the fault map does not have a characteristic scale other than that representing the intensity of the fault network. The distance distribution for the observed gas emissions is significantly narrower than that arising from the Poisson process, with a Kolmogorov distance of 0.25 ± 0.02. The crossing point between the two distributions defines the characteristic half-width of the swath of gas emission sites around the mapped active faults. For the whole Sea of Marmara data set a characteristic half-width of 900–1000 m is found which matches the half-width of the seafloor deformation zone observed around the main active fault. When the same analysis is applied to zones covering the Western High and the Central High it is found that the swath of gas emissions is wider on the Central High (2 km half-width), and not clearly related to the seafloor deformation zone there. This difference is put in perspective with recent work showing that creep is occurring on the western segment of the Main Marmara Fault (this also causing microseismicity) while the central Istanbul-Silivri segment may have remained locked since the 1766 magnitude 7+ earthquake. This suggests that aseismic slip (and not only earthquake occurrence) effectively maintains high permeability conduits in fault zones in sediments.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.dsr2.2018.05.010
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
    Electronic Resource
    Electronic Resource
    New frontier for stratigraphy (1986)
    [s.l.] : Nature Publishing Group
    Nature 322 (1986), S. 507-507 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WITH 9.6 million km2 China covers nearly one-fifteenth of the world's land area and is the third largest country in the world. The geology of this vast portion of our planet is now being studied by some 70,000 geological personnel in China. Their results are reported regularly in some 50 Chinese ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/322507a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Evaluating nuclear accidents (1988)
    [s.l.] : Nature Publishing Group
    Nature 335 (1988), S. 391-391 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Your news columns reported a "scale of severity" to evaluate nuclear accidents, as proposed by the French Industry Minister Alan Madelin1. Mad-elm's scale is intended to allow a layman to appreciate the degrees of risk involved in designing large, risky projects, but has been criticized as ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/335391a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Turkey maligned (1986)
    [s.l.] : Nature Publishing Group
    Nature 322 (1986), S. 679-679 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Nechemia Meyers (Nature 321, 801; 1986) claims that visas had been denied by the Turkish Foreign Office to Israeli scientists seeking to take part in the Subcom-mission on Triassic Stratigraphy's field workshop (of whose organizing committee we are members) in Western Turkey between 14 and 23 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/322679b0
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    Paper (German National Licenses)
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