Recognition of earthquake-prone areas (M≥6.0) in the Caspian region: Kopetdagh–Aladagh–Binalud
Category: 13-1
UDC 550.341
A.I. Gorshkov, O.V. Novikova
International Institute of Earthquake Prediction Theory and Mathematical Geophysics,
Russian Academy of Sciences, Moscow, Russia
Abstract
Seismogenic high-seismicity intersections of morphostructural lineaments have been identified in the Kopetdagh–Aladagh–Binalud mountain system. Recognition patterns – intersections of lineaments – have been defined with morphostructural zoning method. The recorded M ³ 6.0 earthquakes nucleate at some of the intersections of lineaments delineated in the study region. Among all intersections we recognized the seismogenic zones (high-seismicity), prone to M ³ 6.0 earthquakes, with the pattern recognition algorithm CORA-3. The majority of high-seismicity intersections sit at the first and second rank lineaments, i.e. larger earthquakes originate at the boundaries of larger blocks. These intersections exhibit the contrast neotectonic movements and the increased fracturing of the crust.
Keywords: large earthquakes, pattern recognition, morphostructural zoning, intersections of lineaments characteristic features of seismogenic intersections of lineaments.
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