DOI: 10.1002/grl.50568
论文题名: Is land subsidence increasing the exposure to sea level rise in Alexandria, Egypt?
作者: Wöppelmann G. ; Le Cozannet G. ; De Michele M. ; Raucoules D. ; Cazenave A. ; Garcin M. ; Hanson S. ; Marcos M. ; Santamaría-Gõmez A.
刊名: Geophysical Research Letters
ISSN: 0094-8866
EISSN: 1944-8597
出版年: 2013
卷: 40, 期: 12 起始页码: 2953
结束页码: 2957
语种: 英语
英文关键词: Alexandria
; Coastal subsidence
; GPS
; InSAR
; Sea level
; tide gauge
Scopus关键词: Alexandria
; Combined analysis
; Gravitational collapse
; Holocene sediments
; InSAR
; Persistent scatterer interferometry (PSI)
; Policy development
; Tide gauges
; Geodetic satellites
; Global positioning system
; Global warming
; Subsidence
; Sea level
; compaction
; delta
; dewatering
; earthquake event
; GPS
; gravity field
; hazard management
; interferometry
; long-term change
; policy development
; regional planning
; sea level change
; subsidence
; synthetic aperture radar
; tectonic setting
; tide gauge
; timescale
; Alexandria [Egypt]
; Egypt
英文摘要: Delta margins are subject to relatively high rates of land subsidence and have the potential to significantly exacerbate future changes in sea levels predicted by global warming models used in impact studies. Through a combined analysis of GPS and persistent scatterer interferometry data, we determine that most of the coastline of Alexandria has been subject to moderate land subsidence over the past decade (0.4 mm/yr on average and up to 2 mm/yr locally). This contrasts to previous studies that suggested subsidence in excess of 3 mm/yr. Based on our findings, we infer that on multi-century to millennia timescales, land subsidence in the area of Alexandria is dominated by tectonic setting and earthquakes or gravitational collapse episodes of a growth fault, whereas on shorter interseismic decadal to century timescales, subsidence rates are likely steady and moderate, in agreement with natural compaction and dewatering of the observed Holocene sediment layer. Key Points Use of a combined analysis of GPS and PSI data Alexandria coastal are has been subject to moderate land subsidence Important considerations for local planning and policy development ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880551979&doi=10.1002%2fgrl.50568&partnerID=40&md5=d1ce92700f49932fa69ac47a9d80c109
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6130
Appears in Collections: 气候减缓与适应
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作者单位: LIENSs, Université de la Rochelle-CNRS, CNRS, 2 rue Olympe de Gouges, FR-17000 La Rochelle, France
Recommended Citation:
Wöppelmann G.,Le Cozannet G.,De Michele M.,et al. Is land subsidence increasing the exposure to sea level rise in Alexandria, Egypt?[J]. Geophysical Research Letters,2013-01-01,40(12).