ACTIVE TECTONICS AND ESTIMATION OF SEISMIC HAZARD IN THE SABZEVARAN REGION, SOUTHEAST OF CENTRAL IRAN

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SHAFIEI BAFTI A.; JAFARI HAMID REZA; SHAHPASANDZADEH MAJID

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Journal: JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY) Year:2009 | Volume:5 | Issue:3 Page(s): 230-239

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Title

ACTIVE TECTONICS AND ESTIMATION OF SEISMIC HAZARD IN THE SABZEVARAN REGION, SOUTHEAST OF CENTRAL IRAN

Author(s)

SHAFIEI BAFTI A. | JAFARI HAMID REZA | SHAHPASANDZADEH MAJID | Issue Writer Certificate

Keywords

CONTINENTAL STRIKE SLIP FAULTSQ3

SABZEVARAN-JIROFT FAULT SYSTEMSQ3

MORPHOTECTONIC INDEXESQ3

FAULT SLIP-RATEQ2

EARTHQUAKE HAZARD ASSESSMENTQ3

Abstract

CONTINENTAL STRIKE SLIP FAULTS, which are important deformation elements in the continents, can cause large-magnitude earthquakes. As an example of these continental fault systems in the Zagros-Makran-Central Iran transitional zone, the Sabzevaran-Jiroft fault system consumes the shear between the Zagros and Makran. The Sabzevaran fault with a length of 150 km shows various evidences of active faulting in the Quaternary. The cumulative displacement along the Sabzevaran fault is measured 130 m for the last 42 KY with a horizontal slip-rate of about 2.98±0.75 mm/yr. The Jiroft fault with a length of 130 km delimits the western boundary of the Jazmurian depression. This fault caused a separation of about 49 m and 132 m in the 22 KY and 42 KY alluvial fan deposits. The average horizontal slip-rate of the fault calculated about 2.7±0.7 mm/yr.Seismicity of the Sabzevaran region indicates sparsely spatial distribution of low-magnitude earthquakes. According to these study, the Maximum Credible Earthquake (MCE) with a magnitude of 6.4 indicate a recurrence time of 1300 yr. Comparison of recurrence time of large- to medium-magnitude earthquakes- derived from historical and instrumental earthquake catalogues- with the mean annual slip-rate of the active faults in the Sabzevaran region, we suggest lack of fault locking or a continuous fault creep along the Sabzevaran-Jiroft fault system.

Cites

ارزیابی خطر زمین لرزه و تحلیل ریسک زلزله در شهر خوی با استفاده از روش های قطعی و احتمالی

References

RECONSTRUCTION OF KUHBANAN FAULT SYSTEM SINCE LATE PLIOCENE, WEST OF BAHABAD, CENTRAL IRAN

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APA: Copy

SHAFIEI BAFTI, A., JAFARI, HAMID REZA, & SHAHPASANDZADEH, MAJID. (2009). ACTIVE TECTONICS AND ESTIMATION OF SEISMIC HAZARD IN THE SABZEVARAN REGION, SOUTHEAST OF CENTRAL IRAN. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), 5(3), 230-239. SID. https://sid.ir/paper/127144/en

Vancouver: Copy

SHAFIEI BAFTI A., JAFARI HAMID REZA, SHAHPASANDZADEH MAJID. ACTIVE TECTONICS AND ESTIMATION OF SEISMIC HAZARD IN THE SABZEVARAN REGION, SOUTHEAST OF CENTRAL IRAN. JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY)[Internet]. 2009;5(3):230-239. Available from: https://sid.ir/paper/127144/en

IEEE: Copy

A. SHAFIEI BAFTI, HAMID REZA JAFARI, and MAJID SHAHPASANDZADEH, “ACTIVE TECTONICS AND ESTIMATION OF SEISMIC HAZARD IN THE SABZEVARAN REGION, SOUTHEAST OF CENTRAL IRAN,” JOURNAL OF GEOTECHNICAL GEOLOGY (APPLIED GEOLOGY), vol. 5, no. 3, pp. 230–239, 2009, [Online]. Available: https://sid.ir/paper/127144/en

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