Abstract
Earthquakes (1.0 <= ML <= 5.3) in the region around the Dead Sea-Jordan
rift fault zone, recorded by the Israel Scismograph Station Network
(ISSN) from 1982 until the beginning of 1989, have been analyzed
and interpreted. The scismicity pattern clearly reveals activity
along three fault zones: the Dead Sea-Jordan rift fault zone, the
Carmel-Faraa fault zone and the Central Sinai/Negev shear zone. Microearthquake
occurrence tends to cluster in or near tensional features (rhomb-shaped
grabens) such as the Hula, Sea of Gallilee and Dead Sea depressions.
Further, eight representative focal mechanisms of individual earthquakes
or earthquake clusters have been derived. The seismicity and focal
mechanism solutions near the branching of the Carmel-Faraa and the
Dead Sea-Jordan rift fault zones suggest a complicated tectonic breakup
in this region. Microearthquakes in the Arava may indicate a more
complex pattern of active faults than was previously assumed.
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