DOI: 10.1007/s11069-020-04034-4
论文题名: On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka
作者: Ratnayakage S.M.S. ; Sasaki J. ; Suzuki T. ; Jayaratne R. ; Ranawaka R.A.S. ; Pathmasiri S.D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 1 起始页码: 1261
结束页码: 1289
语种: 英语
中文关键词: Beach nourishment
; Coastline change
; Developing country
; Sand mining
; Wave climate change
英文关键词: coastal erosion
; coastal zone management
; developing world
; mining
; sediment transport
; shoreline change
; wave climate
; Sri Lanka
英文摘要: Coastal erosion remains a problem in many developing countries because of a limited understating of erosion mechanisms and management. Sri Lanka is one of the countries that recognized coastal erosion management as a governmental responsibility, in 1984. Nevertheless, erosion mechanisms have not yet been fully understood. We investigate the status and mechanisms of coastal erosion using empirically collected data and various techniques, such as Geographic Information System analysis of satellite images, drone mapping, bathymetric surveys, hindcasting of wind-induced wave climate, questionnaires, and semi-structured interview surveys. We identified wave climate change, reduction in river sand supply, interruptions from previous erosion management measures, and offshore sand mining as potential causes of erosion considering sediment flux and rates of erosion. Erosion of Marawila Beach began during 2005–2010 and has been continuing ever since, due to a lack of integration in the beach and the entire sediment system. It is necessary to identify the long-term, large-scale changes in the sediment system through data collection. This study highlights the importance of an integrated coastal erosion management plan and could facilitate better coastal erosion management in Sri Lanka, as well as in other developing countries. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168691
Appears in Collections: 气候变化与战略
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作者单位: Faculty of Engineering, University of Sri Jayewardenepura, Ratmalana, Sri Lanka; Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan; Faculty of Urban Innovation, Yokohama National University, Yokohama, Japan; School of Architecture, Computing and Engineering (ACE), University of East London, London, United Kingdom; Chief Engineer’s Office (Coastal Development), Coast Conservation and Coastal Resource Management Department, Colombo, Sri Lanka
Recommended Citation:
Ratnayakage S.M.S.,Sasaki J.,Suzuki T.,et al. On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka[J]. Natural Hazards,2020-01-01,103(1)