DOI: 10.1002/2015GL066559
论文题名: A new interpretation of seismic tomography in the southern Dead Sea basin using neural network clustering techniques
作者: Braeuer B. ; Bauer K.
刊名: Geophysical Research Letters
ISSN: 0094-8380
EISSN: 1944-8111
出版年: 2015
卷: 42, 期: 22 起始页码: 9772
结束页码: 9780
语种: 英语
英文关键词: Dead Sea basin
; joint interpretation
; pull-apart basin
; self-organizing maps
; Vp, Vp/Vs tomography
Scopus关键词: Buildings
; Cluster analysis
; Conformal mapping
; Crystalline materials
; Crystalline rocks
; Sedimentary rocks
; Sedimentology
; Seismology
; Asymmetric structures
; Clustering techniques
; Crystalline basement
; Dead sea basins
; Joint interpretation
; Neural network clustering
; Pull-apart
; Thickness variation
; Self organizing maps
; artificial neural network
; asymmetry
; basement rock
; cluster analysis
; crystal structure
; data interpretation
; fluvial deposit
; geometry
; lithology
; mapping method
; pull apart basin
; sedimentary rock
; seismic tomography
; seismicity
; Dead Sea
英文摘要: The Dead Sea is a prime location to study the structure and development of pull-apart basins. We analyzed tomographic models of Vp, Vs, and Vp/Vs using self-organizing map clustering techniques. The method allows us to identify major lithologies by their petrophysical signatures. Remapping the clusters into the subsurface reveals the distribution of basin sediments, prebasin sedimentary rocks, and crystalline basement. The Dead Sea basin shows an asymmetric structure with thickness variation from 5 km in the west to 13 km in the east. Most importantly, we identified a distinct, well-defined body under the eastern part of the basin down to 18 km depth. Considering its geometry and petrophysical signature, this unit is interpreted as a buried counterpart of the shallow prebasin sediments encountered outside of the basin and not as crystalline basement. The seismicity distribution supports our results, where events are concentrated along boundaries of the basin and the deep prebasin sedimentary body. Our results suggest that the Dead Sea basin is about 4 km deeper than assumed from previous studies. Key Points Self-organizing maps are used for a joint interpretation of tomography models Deep prebasin sediments were revealed below asymmetric basin structure Seismicity distribution reflects geometry of derived lithological units. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956929082&doi=10.1002%2f2015GL066559&partnerID=40&md5=b8cf8dbb6f53a2fb85142c885414133f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7996
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: GFZ German Research Centre for Geosciences, Potsdam, Germany
Recommended Citation:
Braeuer B.,Bauer K.. A new interpretation of seismic tomography in the southern Dead Sea basin using neural network clustering techniques[J]. Geophysical Research Letters,2015-01-01,42(22).