Geodetic estimate of seismic hazard in the Gulf of Korinthos
Peter Clarke,R. R. Davies,Philip England,Barry Parsons,H. Billiris,Demitris Paradissis,G. Veis,Paul Denys,Paul Cross,V. Ashkenazi,Richard Bingley +10 more
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In this paper, the authors present geodetic data that give estimates of the rate of extension of the Gulf of Korinthos during this century and which suggest that less than half of the elastic strain in the central and western Gulf of Korainthos has been released by earthquakes during the last century.Abstract:
The recent 15 June 1995, M0 = 6.0 × 1018 N m, Aigion earthquake in the western Gulf of Korinthos has focussed attention on the seismic hazard of the region. Although there have been few large earthquakes in the region during this century, the historical record suggests that there may have been many large earthquakes there in the interval 1750–1900. We present geodetic data that give estimates of the rate of extension of the Gulf of Korinthos during this century and which suggest that less than half of the elastic strain in the central and western Gulf of Korinthos has been released by earthquakes during this century. In contrast, the seismic and geodetic strains in the eastern Gulf of Korinthos are in agreement with each other. If the discrepancy between seismic and geodetic strains in the western Gulf of Korinthos that has accumulated during this century is removed in earthquakes, the moment release will be equivalent to several Ms > 6.5 earthquakes.read more
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The significance of pockmarks to understanding fluid flow processes and geohazards
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References
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TL;DR: In this paper, the authors examined the connection between the westward motion of Turkey relative to Europe and the extension in and around the Aegean Sea and examined the relationship between the surface faulting and the focal parameters determined seismologically for the three large 1981 Gulf of Corinth earthquakes, and reassessed the evidence for associating particular earthquakes in the sequence with observed surface faults.
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The relationship between plate motions and seismic moment tensors, and the rates of active deformation in the Mediterranean and Middle East
James Jackson,Dan McKenzie +1 more
TL;DR: In this paper, the relationship between the overall motion across a zone of distributed continental deformation and the seismic moment tensors of earthquakes that occur within it is investigated, and the results are applied to the Mediterranean region to see whether the motion between the relatively rigid regions of central Iran, Turkey, Arabia, Africa, the Adriatic Sea and Eurasia is accommodated seismically within the upper crust of wide deforming zones that bound these regions.
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Quaternary evolution of the Corinth Rift and its implications for the Late Cenozoic evolution of the Aegean
TL;DR: In this article, a detailed analysis of aerial and SPOT imagery supported by field observations is presented to constrain rates of faulting and the distribution of deformation in the seismically active Aegean region.
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Seismicity and associated strain of central Greece between 1890 and 1988
N. N. Ambraseys,James Jackson +1 more
TL;DR: In this paper, the authors examined the seismicity of central Greece between 1890 and 1988, using macroseismic and instrumental data, to ask two questions: (1) does the seismic data reveal all the major tectonic structures that are known to be active?; and (2) what are the likely strains associated with the seismic activity over this period?
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Evidence of bias in estimations of earthquake size
Göran Ekström,Adam M. Dziewonski +1 more
TL;DR: In this article, the authors show that the magnitude of earthquakes determined using traditional methods show systematic deviations, dependent on tectonic setting, from accurate estimates of earthquake size, and that seismic moments determined from magnitudes can be wrong by as much as a factor of four.