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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Onset of aseismic creep on major strike-slip faults
Geology, Volume 40, No. 12, Year 2012
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Description
Time series analysis of spaceborne synthetic aperture radar (SAR) data, GPS measurements, and fi eld observations reveal that the central section of the Izmit (Turkey) fault that slipped with a supershear rupture velocity in the A.D. 1999, Mw7.4, Izmit earthquake began creeping aseismically following the earthquake. Rapid initial postseismic afterslip decayed logarithmically with time and appears to have reached a steady rate comparable to the preearthquake full fault-crossing rate, suggesting that it may continue for decades and possibly until late in the earthquake cycle. If confi rmed by future monitoring, these observations identify postseismic afterslip as a mechanism for initiating creep behavior along strike-slip faults. Long-term afterslip and/or creep has signifi cant implications for earthquake cycle models, recurrence intervals of large earthquakes, and accordingly, seismic hazard estimation along mature strike-slip faults, in particular for Istanbul which is believed to lie adjacent to a seismic gap along the North Anatolian fault in the Sea of Marmara. © 2012 Geological Society of America.
Authors & Co-Authors
Çakir, Ziyadin
Turkey, Istanbul
İstanbul Teknik Üniversitesi
Turkey, Gebze
Tubitak Marmara Research Center
Ergintav, Semih
Turkey, Gebze
Tubitak Marmara Research Center
Özener, Haluk
Turkey, Bebek
Boğaziçi Üniversitesi
Dogan, Uǧur
Turkey, Istanbul
Yıldız Teknik Üniversitesi
Akoğlu, Ahmet M.
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Meghraoui, Mustapha A.
France, Strasbourg
Institut Terre et Environnement de Strasbourg Ites
Reilinger, Robert E.
United States, Cambridge
Massachusetts Institute of Technology
Statistics
Citations: 71
Authors: 7
Affiliations: 7
Identifiers
Doi:
10.1130/G33522.1
ISSN:
00917613
e-ISSN:
19432682
Research Areas
Environmental