DOI: 10.1016/j.tecto.2020.228596
论文题名: Seismic potential of the Dead Sea Fault in the northern Gulf of Aqaba-Elat: New evidence from liquefaction, seismic reflection, and paleoseismic data
作者: Kanari M. ; Niemi T.M. ; Ben-Avraham Z. ; Frieslander U. ; Tibor G. ; Goodman-Tchernov B.N. ; Wechsler N. ; Abueladas A. ; Al-Zoubi A. ; Basson U. ; Marco S.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 793 语种: 英语
中文关键词: Dead Sea Transform
; Historical earthquakes
; Paleoliquefaction
; Paleoseismology
; Seismic hazard
; Seismic reflection data
英文关键词: Earthquakes
; Fluidization
; Liquefaction
; Offshore oil well production
; Seismic waves
; Strike-slip faults
; Flower structures
; Historical earthquakes
; Precise locations
; Radiocarbon dating
; Reflector geometry
; Seismic reflection profiles
; Seismic reflections
; Strike slip faulting
; Fault slips
; fault slip
; fault zone
; liquefaction
; paleoseismicity
; seismic data
; seismic reflection
; seismicity
; slip rate
; strike-slip fault
; tectonic setting
; Dead Sea Rift
; Gulf of Aqaba
; Indian Ocean
; Red Sea [Indian Ocean]
英文摘要: The cities of Elat, Israel and neighboring Aqaba, Jordan are major economic, cultural, and seaport centers. They are located on the northern shore of the Gulf of Aqaba/Elat (GAE) directly on the Dead Sea Transform. Yet the precise location of the fault trace and its tectonic activity are lacking. The interpretation of seismic reflection profiles across the GAE beach and paleoseismic trench data located 2.2 km north of the shoreline provide evidence that the active offshore mapped Avrona Fault extends onland along the eastern side of the Elat Sabkha (mudflat), where three prominent fault strands crosscut the sedimentary fill. Mismatch of reflector geometry across the faults and flower structures indicate strike-slip faulting with a normal-slip component. Subsurface data from two trenching sites provide evidence for a minimum of two surface ruptures and two paleoliquefaction events. Faulting is constrained by radiocarbon dating for an Event 1 between 897 and 992 CE and Event 2 after 1294 CE. We suggest that the historically documented 1068 CE, and at least one later earthquake in 1458 or 1588 CE, ruptured the Elat Sabkha site. Based on fault mapping, we suggest a minimum value of M 6.6 for the 1068 CE earthquake. Whereas no surface rupture was observed for the 1212 CE historical earthquake, fluidized strata radiocarbon dated to before 1269–1389 CE identified as paleoliquefaction may be attributed to it. Two liquefaction sand-blows mapped in the trench likely formed after 1337 CE and before 1550 CE, which possibly occurred at the same time as in the second faulting event. Our data suggest that no large event occurred along the Avrona segment in the past ~430–550 years. Given a ~ 5 mm/yr slip rate, we conclude that a significant period of time passed since the last surface rupturing on the Avrona Fault, increasing its seismic potential. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170617
Appears in Collections: 气候变化与战略
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作者单位: Department of Marine Geology and Geophysics, Israel Oceanographic and Limnological Research, Haifa, 31080, Israel; Department of Earth and Environmental Sciences, University of Missouri-Kansas City, Kansas City, MO, United States; Department of Geophysics, Tel-Aviv University, Tel Aviv, 6997801, Israel; Geophysical Institute of Israel, Habbal Shem Tov 6, Lod, 7019802, Israel; Dr. Moses Strauss Department of Marine Geosciences, Charney School of Marine Sciences, University of Haifa, Mt. Carmel, Haifa, 31905, Israel; Faculty of Engineering, Surveying, and Geomatics, Al-Balqa' Applied University, Al-Salt, 19117, Jordan; GeoSense, P.O. Box 921, Even-Yehuda, Israel
Recommended Citation:
Kanari M.,Niemi T.M.,Ben-Avraham Z.,et al. Seismic potential of the Dead Sea Fault in the northern Gulf of Aqaba-Elat: New evidence from liquefaction, seismic reflection, and paleoseismic data[J]. Tectonophysics,2020-01-01,793