DOI: 10.1007/s12517-020-5069-6
论文题名: Assessment of shoreline dynamics on the Eastern Coast of Algiers (Algeria): a spatiotemporal analysis using in situ measurements and geospatial tools
作者: Otmani H. ; Belkessa R. ; Bengoufa S. ; Boukhediche W. ; Djerrai N. ; Abbad K.
刊名: Arabian Journal of Geosciences
ISSN: 18667511
出版年: 2020
卷: 13, 期: 3 语种: 英语
英文关键词: Coastal vulnerability
; DGPS
; DSAS
; Eastern Algiers
; Erosion
; Geomorphology
; GIS
; Shoreline
Scopus关键词: detection method
; DGPS
; disturbance
; GIS
; in situ measurement
; satellite data
; shoreline change
; spatiotemporal analysis
; urban development
; Alger [Algeria]
; Algeria
; Algiers
英文摘要: The eastern coast of the Algiers, which stretches over 15 km, is currently experiencing very intense socioeconomic and urban development that is causing severe disturbances to the coastal environment. The main issue of this study concerns itself with understanding the evolutionary trends of this system and assessing its state of vulnerability towards erosion phenomena. This work focuses on the historical study of the variation in the shoreline position by combining photogrammetry data and in situ DGPS measurements (Differential Global Positioning System). Data treatment was carried out using a geographic information system (GIS) and the Digital Shoreline Analysis System (DSAS) geostatistical computing tool. These techniques have enabled identification of the erosion/accretion rates and description of the evolutionary trends over a period of 58 years by calculating the net rates of coastline changes over three time periods (1959–1980, 1980–2003 and 2003–2017). The results show that the net rate fluctuates between sites, with an overall tendency towards erosion (49% of the coastline), associated with a significant variation in the average annual rates. The computed statistics show that the study area was in a state of accretion between 1959 and 1980, with an average end point rate (EPR) equal to 0.72 m/year. This net rate of change turned negative and became alarming during the period between 1980 and 2017 when the EPR decreased to − 0.54 m/year. These trends are due to a combination of the cumulative effects of storms and anthropogenic actions. Hence, sustainable management policies must be developed rapidly by coastal managers to rehabilitate the area. © 2020, Saudi Society for Geosciences. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159764
Appears in Collections: 气候变化与战略
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作者单位: Ecole Nationale Supérieure des Sciences de la Mer et de l’Aménagement du Littoral (ENSSMAL), Algiers, Algeria; Laboratoire des Ecosystèmes Marins et Littoraux (EcoSysMarL), Algiers, Algeria; Laboratoire de Mobilisation et de Valorisation des Ressources en Eau (MVRE), Blida, Algeria; Université d’Oran 2 Mohamed Ben Ahmed (UMBA), Oran, Algeria; Laboratoire Espace Géographique et Aménagement du Territoire (EGEAT), Oran, Algeria; Laboratoire de Conservation et de Valorisation des Ressources Marines (LCVRM), Algiers, Algeria
Recommended Citation:
Otmani H.,Belkessa R.,Bengoufa S.,et al. Assessment of shoreline dynamics on the Eastern Coast of Algiers (Algeria): a spatiotemporal analysis using in situ measurements and geospatial tools[J]. Arabian Journal of Geosciences,2020-01-01,13(3)