Variable behavior of the Dead Sea Fault along the southern Arava segment from GPS measurements
| Autor: | Aline Déprez, Frédéric Masson, Amotz Agnon, Yariv Hamiel, Yann Klinger |
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| Přispěvatelé: | Institut de physique du globe de Strasbourg (IPGS), Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Global and Planetary Change
Dead sea geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Deformation (mechanics) [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] business.industry Sedimentary basin Fault (geology) 010502 geochemistry & geophysics Geodesy 01 natural sciences Variable (computer science) Global Positioning System General Earth and Planetary Sciences business ComputingMilieux_MISCELLANEOUS Seismology Wadi Geology 0105 earth and related environmental sciences Slip rate |
| Zdroj: | Comptes Rendus Géoscience Comptes Rendus Géoscience, Elsevier, 2015, 347, pp.161-169 |
| ISSN: | 1631-0713 |
| DOI: | 10.1016/j.crte.2014.11.001 |
| Popis: | The Dead Sea Fault is a major strike-slip fault bounding the Arabia plate and the Sinai subplate. On the basis of three GPS campaign measurements, 12 years apart, at 19 sites distributed in Israel and Jordan, complemented by Israeli permanent stations, we compute the present-day deformation across the Wadi Arava fault, the southern segment of the Dead Sea Fault. Elastic locked-fault modelling of fault-parallel velocities provides a slip rate of 4.7 ± 0.7 mm/yr and a locking depth of 11.6 ± 5.3 km in its central part. Along its northern part, south of the Dead Sea, the simple model proposed for the central profile does not fit the velocity field well. To fit the data, two faults have to be taken into account, on both sides of the sedimentary basin of the Dead Sea, each fault accommodating ∼ 2 mm/yr. Locking depths are small (less than 2 km on the western branch, ∼ 6 km on the eastern branch). Along the southern profile, we are once again unable to fit the data using the simple model, similar to the central profile. It is very difficult to propose a velocity greater than 4 mm/yr, i.e. smaller than that along the central profile. This leads us to propose that a part of the relative movement from Sinai to Arabia is accommodated along faults located west of our profiles. |
| Databáze: | OpenAIRE |
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