干旱区生态环境知识资源中心(Arid): Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa

Arid

DOI	10.1038/s41598-020-77926-x
	Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa
	Hzami, Abderraouf; Heggy, Essam; Amrouni, Oula; Mahe, Gil; Maanan, Mohamed; Abdeljaouad, Saadi
通讯作者	Heggy, E (corresponding author), Univ Southern Calif USC, Viterbi Sch Engn, 3737 Watt Way,Powell Hall Engn,Off 502, Los Angeles, CA 90089 USA. ; Heggy, E (corresponding author), CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2021
卷号	11 期号:1
英文摘要	The arid coasts of North Africa, extending over 4633 km from the Gulf of Tunis to the Nile Delta, are undergoing pronounced shoreline retreats and coastal floodings that are reported as a consequence of the ongoing sea level rise resulting from global warming. Of particular interest are the abnormal shoreline dynamics for deltaic and sandy beaches, which are severely impacted by abrupt decadal variabilities in both climatic and anthropogenic drivers resulting in their increased vulnerability to disturbances from coastal hazards. Unfortunately, the evolution, distribution and impacts of these drivers remain largely unquantified, let alone understood, for these extensive arid coasts that harbor the major portion of North Africa's population as well as unique and fragile marine ecosystems. To address this deficiency, we use GIS-based multi-criteria approaches combined with analytic hierarchy process to map the Coastal Vulnerability Index and the Socioeconomic Vulnerability Index along these coasts to investigate the amplitude and extent of shoreline deterioration resulting from sudden fluctuations in sediment transport to the coastline. We use the western bay of the Gulf of Tunis, the coasts of Tripoli and the Nile Delta as three validation sites for our vulnerability assessment. The statistical Integrated Coastal Vulnerability Index map reveals that 47% of arid North African coasts are characterized by high to very high vulnerability. In particular, we observe that the densely populated deltaic coasts in both Tunisia and Egypt are 70% more vulnerable than any others coast in the eastern Mediterranean Basin. These abnormally high-vulnerability extensive areas are also correlated with significant deterioration of coastal aquifers and hence in crop production, compromising local food security and resulting in increasing outflow migration trends. Both Tunisia and Egypt observed dramatic increases in the net population outflow migration by respectively 62% and 248% between 2000 and 2016, mostly from coastal areas. Our source analysis of the amplitude and extent of these high coastal vulnerabilities suggests that they result from the anthropogenic drivers of damming and rapid urban growth over the last few decades rather than the effects of global warming.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000668339700037
WOS关键词	SEA-LEVEL RISE ; CLIMATE-CHANGE ; ENVIRONMENTAL-CHANGE ; MEDITERRANEAN BASIN ; ADAPTATION ; EGYPT ; MIGRATION ; HOTSPOTS ; IMPACTS ; GABES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369047
作者单位	[Hzami, Abderraouf; Abdeljaouad, Saadi] Univ Tunis El Manar, Fac Sci Tunis, Tunis, Tunisia; [Heggy, Essam] Univ Southern Calif USC, Viterbi Sch Engn, 3737 Watt Way,Powell Hall Engn,Off 502, Los Angeles, CA 90089 USA; [Heggy, Essam] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA; [Amrouni, Oula] Univ Carthage, Natl Inst Marine Sci & Technol, Tunis, Tunisia; [Mahe, Gil] Univ Montpellier, CNRS, HydroSci Lab, IRD, Montpellier, France; [Maanan, Mohamed] Univ Nantes, Inst Geog & Planning, Nantes, France
推荐引用方式 GB/T 7714	Hzami, Abderraouf,Heggy, Essam,Amrouni, Oula,et al. Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa[J]. French National Research Institute for Sustainable Development,2021,11(1).
APA	Hzami, Abderraouf,Heggy, Essam,Amrouni, Oula,Mahe, Gil,Maanan, Mohamed,&Abdeljaouad, Saadi.(2021).Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa.SCIENTIFIC REPORTS,11(1).
MLA	Hzami, Abderraouf,et al."Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa".SCIENTIFIC REPORTS 11.1(2021).