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Changes in earthquake source properties across a shallow subduction zone: Kamchatka Peninsula
Zobin, V.M. (1999). Changes in earthquake source properties across a shallow subduction zone: Kamchatka Peninsula, in: Sauber, J. et al. (Ed.) Seismogenic and tsunamigenic processes in shallow subduction zones. Pure and Applied Geophysics, 154(3-4): pp. 457-466. hdl.handle.net/10.1007/978-3-0348-8679-6_4
In: Sauber, J.; Dmowska, R. (Ed.) (1999). Seismogenic and tsunamigenic processes in shallow subduction zones. e-Book edition. Pure and Applied Geophysics, 154(3-4). Springer: Basel. ISBN 978-3-0348-8679-6. vi, 405-776 pp. hdl.handle.net/10.1007/978-3-0348-8679-6, more
In: Pure and Applied Geophysics. Birkhäuser: Basel. ISSN 0033-4553, more
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Keyword
    Marine
Author keywords
    Kamchatka shallow subduction zone source area aftershocks swarms high - and low-frequency earthquake radiation

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  • Zobin, V.M.

Abstract
    This paper studies the source properties of earthquakes originating within the shallow subduction zone near Kamchatka Peninsula. We use the regional catalog of 1962–1993 Kamchatkan earthquakes completed by the Institute of Volcanology, Russia. Our previous investigations (ZOBIN, 1990, 1996a) and this study allow us to show a gradual change in source properties of earthquakes from trench to coast.It was demonstrated that the swarm sequences change to the mainshock-aftershock sequences from trench to coast. The source area of aftershock sequences is generally smaller than the swarm areas for the same magnitude M s of the mainshock or clue event of the swarm. Study of the M s;Ks relation, where K s is the energy class for Kamchatka earthquakes, reveals that the events radiate relatively higher frequencies from trench to coast

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