DOI: 10.1002/grl.50374
论文题名: Thermal structure and megathrust seismogenic potential of the Makran subduction zone
作者: Smith G.L. ; McNeill L.C. ; Wang K. ; He J. ; Henstock T.J.
刊名: Geophysical Research Letters
ISSN: 0094-9162
EISSN: 1944-8893
出版年: 2013
卷: 40, 期: 8 起始页码: 1528
结束页码: 1533
语种: 英语
英文关键词: earthquake
; Makran
; seismogenic potential
; subduction zone
; thermal modeling
; tsunami
Scopus关键词: Deformation front
; Earthquake and tsunamis
; Historical records
; Makran
; seismogenic potential
; Seismogenic zones
; Subduction zones
; Thermal modeling
; Plates (structural components)
; Sedimentology
; Seismographs
; Tectonics
; Thermography (temperature measurement)
; Tsunamis
; Earthquakes
; coastal zone
; dip
; earthquake
; magnitude
; rupture
; sediment core
; seismicity
; subduction zone
; thermal structure
; thrust
; Makran
英文摘要: The Makran subduction zone experienced a tsunamigenic Mw 8.1 earthquake in 1945 and recent, smaller earthquakes also suggest seismicity on the megathrust; however, its historical record is limited and hazard potential enigmatic. We have developed a 2-D thermal model of the subduction zone. The results are twofold: (1) The thick sediment cover on the incoming plate leads to high (~150°) plate boundary temperatures at the deformation front making the megathrust potentially seismogenic to a shallow depth, and (2) the shallow dip of the subducting plate leads to a wide potential seismogenic zone (up to ~350 km). Combining these results with along strike rupture scenarios indicates that Mw8.7-9.2 earthquakes are possible in the seaward Makran subduction zone. These results have important earthquake and tsunami hazard implications, particularly for the adjacent coastlines of Pakistan, Iran, Oman, and India, as the Makran has not been previously considered a likely candidate for a Mw > 9 earthquake. Key Points Thermal model of the Makran subduction zone to estimate seismogenic potential Megathrust potentially seismogenic to shallow depths due to thick sediment cover Wide potential seismogenic zone (>~350 km) with potential magnitudes of M>9. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877992122&doi=10.1002%2fgrl.50374&partnerID=40&md5=c441f8aec3b2782978813292a045c794
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6426
Appears in Collections: 气候减缓与适应
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作者单位: Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton, SO14 3ZH, United Kingdom
Recommended Citation:
Smith G.L.,McNeill L.C.,Wang K.,et al. Thermal structure and megathrust seismogenic potential of the Makran subduction zone[J]. Geophysical Research Letters,2013-01-01,40(8).