期刊
JOURNAL OF GEODYNAMICS
卷 52, 期 3-4, 页码 321-331出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jog.2011.03.004
关键词
Carmel Fault; GPS; Velocity field; Dislocation model
The existing knowledge about the recent crustal deformations along the Carmel Fault in Northern Israel which passes the city of Haifa is to a certain degree ambiguous. Depending on geological, geophysical or geodetic sources the movement rates and senses range from 1 mm/yr sinistral up to 4 mm/yr dextral. In this paper we analyze GPS data from a regional network observed between 1999 and 2009 and derive global and regional velocities for 23 sites along the fault. The regional site velocities were estimated with respect to a local datum that was defined by a stable cluster of sites on one side of the fault and the horizontal velocity field shows deformations of up to 4.5 mm/yr dextral. In combination with an S-transformation the site velocities were used to estimate the parameters of a dislocation model based on elastic half space theory. We compare the results with expectations from slip rate analysis of seismicity parameters. In addition the resulting fault slip field is used to derive a fault-related velocity field. (C) 2011 Elsevier Ltd. All rights reserved.
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