干旱区生态环境知识资源中心(Arid): Photogrammetric assessment of shoreline retreat in North Africa: Anthropogenic and natural drivers

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DOI	10.1016/j.isprsjprs.2019.09.001
	Photogrammetric assessment of shoreline retreat in North Africa: Anthropogenic and natural drivers
	Amrouni, Oula 1; Hzami, Abderraouf 2; Heggy, Essam 3,4
通讯作者	Heggy, Essam
来源期刊	ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
ISSN	0924-2716
EISSN	1872-8235
出版年	2019
卷号	157 页码:73-92
英文摘要	Shoreline retreat along extended semi-arid areas of North African coasts are indicative of the imbalance of coastal sedimentary processes due to modern abrupt changes in precipitation patterns and urban growth. Monitoring of the diachronic shoreline position and land-use from 1952 to 2018 in the coast of the Hammamet Bay in central-east Tunisia, using both aerial and orbital photogrammetric scenes and the Digital Shoreline Analysis System from 1887 to 2018, suggests shoreline retreat rates ranging from -1.3 to -5.6 m/yr. Such rates are abnormal when compared to the average of -0.07 m/yr suggested by global-scale assessment modeling for sandy beach evolution. These abnormal erosions extend over 65 km of sandy beaches, resulting from a severe deficit of sediment transport caused primarily by rapid coastal urban growth that obstructs sediment flow to the shoreline. We suggest that the high retreat rates observed in the low-population period of 1884-1931 originated mainly from storm surges and tsunamis, or potentially subsidence in the coastal substratum. Moreover, our analysis of the salinity of shallow coastal aquifers and land coverage suggests that shoreline retreat coupled with rapid urban growth accelerated seawater intrusion similar to 5 km inland, causing soil desiccation, the development of salt lakes, and reduction of vegetation coverage by similar to 18%. These abrupt environmental changes have a severe, adverse impact on crop production and food security in these densely populated and economically important areas across significant parts of the North African coasts, sharing similar key environmental parameters with our study site. We conclude that anthropogenic drivers are the major source of shoreline retreat rather than natural ones.
英文关键词	Shoreline retreat Coastal dynamics Littoral sedimentation Seawater intrusion Change detection Land-use and groundwater
类型	Article
语种	英语
国家	Tunisia ; USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000491613300006
WOS关键词	SEA-LEVEL RISE ; CAP-BON ; SEDIMENT DYNAMICS ; COASTAL AQUIFER ; TUNISIA ; VARIABILITY ; GROUNDWATER ; GULF ; SALINIZATION ; EVOLUTION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Physical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310626
作者单位	1.Univ Tunis Carthage, Natl Inst Marine Sci & Technol, Tunis, Tunisia; 2.Univ Tunis El Manar, Fac Sci Tunis, Tunis, Tunisia; 3.Univ Southern Calif, Viterbi Sch Engn, 3737 Watt Way,Powell Hall Engn,Off 502, Los Angeles, CA 90089 USA; 4.CALTECH, Jet Prop Lab, Pasadena, CA USA
推荐引用方式 GB/T 7714	Amrouni, Oula,Hzami, Abderraouf,Heggy, Essam. Photogrammetric assessment of shoreline retreat in North Africa: Anthropogenic and natural drivers[J],2019,157:73-92.
APA	Amrouni, Oula,Hzami, Abderraouf,&Heggy, Essam.(2019).Photogrammetric assessment of shoreline retreat in North Africa: Anthropogenic and natural drivers.ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,157,73-92.
MLA	Amrouni, Oula,et al."Photogrammetric assessment of shoreline retreat in North Africa: Anthropogenic and natural drivers".ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING 157(2019):73-92.