Onset of aseismic creep on major strike-slip faults

Ziyadin Çakir*, Semih Ergintav, Haluk Özener, Uǧur Dogan, Ahmet M. Akoglu, Mustapha Meghraoui, Robert Reilinger

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

69 Atıf (Scopus)

Özet

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.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)1115-1118
Sayfa sayısı4
DergiGeology
Hacim40
Basın numarası12
DOI'lar
Yayın durumuYayınlandı - Ara 2012

Finansman

FinansörlerFinansör numarası
National Science Foundation0838488, 0947969

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