DOI: 10.1002/2015GL066053
论文题名: InSAR-based modeling and analysis of sinkholes along the Dead Sea coastline
作者: Atzori S. ; Antonioli A. ; Salvi S. ; Baer G.
刊名: Geophysical Research Letters
ISSN: 0094-9108
EISSN: 1944-8839
出版年: 2015
卷: 42, 期: 20 起始页码: 8383
结束页码: 8390
语种: 英语
英文关键词: Dead Sea
; InSAR
; modeling
; sinkholes
; stress transfer
Scopus关键词: Interferometry
; Inverse problems
; Models
; Radar
; Stresses
; Subsidence
; Coulomb failure stress
; Dead sea
; InSAR
; Interferometric synthetic aperture radars
; Satellite radar interferometry
; sinkholes
; Stress transfer
; Surface displacement
; Synthetic aperture radar
; cavity
; Coulomb criterion
; deflation
; displacement
; dissolution
; failure analysis
; geometry
; hazard assessment
; inverse analysis
; radar interferometry
; satellite
; shoreline
; sinkhole
; spatiotemporal analysis
; stress field
; subsidence
; synthetic aperture radar
; Dead Sea
英文摘要: Sinkholes commonly form by subsurface dissolution cavities that collapse after the overlying layers become mechanically unsupported. Sinkholes along the Dead Sea shorelines are preceded by, associated with, and followed by gradual surface subsidence that accompanies the cavities' growth. We exploit satellite radar interferometry (interferometric synthetic aperture radar) to resolve temporal and spatial relationships between gradual subsidence and sinkhole collapse. The geometry of the deflating cavity roof is determined by elastic inverse modeling of the surface displacements. A Coulomb failure stress criterion is applied to calculate the stress field induced by the deflating cavity at the ground surface. We find that the induced stress field favors generation of sinkholes at the perimeters of the subsiding areas rather than at their centers, in agreement with field observations, providing important information for sinkhole hazard assessment. Further, our analysis suggests that short-term deformation in consolidated gravel layers at shallow depths could be approximated by simple elastic modeling. Key Points Dead Sea sinkhole precursors are detected by InSAR Sinkholes commonly appear at the perimeters of the subsiding areas Analytical elastic models may explain the sinkhole formation mechanism © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946592786&doi=10.1002%2f2015GL066053&partnerID=40&md5=61c7a4f1cf7012ce4228e17291bac811
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8724
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: Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy
Recommended Citation:
Atzori S.,Antonioli A.,Salvi S.,et al. InSAR-based modeling and analysis of sinkholes along the Dead Sea coastline[J]. Geophysical Research Letters,2015-01-01,42(20).