气候变化领域集成服务门户(CCPortal): On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka

CCPortal

DOI	10.1007/s11069-020-04034-4
	On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka
	Ratnayakage S.M.S.; Sasaki J.; Suzuki T.; Jayaratne R.; Ranawaka R.A.S.; Pathmasiri S.D.
发表日期	2020
ISSN	0921030X
起始页码	1261
结束页码	1289
卷号	103 期号:1
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.
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
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205892
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
推荐引用方式 GB/T 7714	Ratnayakage S.M.S.,Sasaki J.,Suzuki T.,et al. On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka[J],2020,103(1).
APA	Ratnayakage S.M.S.,Sasaki J.,Suzuki T.,Jayaratne R.,Ranawaka R.A.S.,&Pathmasiri S.D..(2020).On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka.Natural Hazards,103(1).
MLA	Ratnayakage S.M.S.,et al."On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka".Natural Hazards 103.1(2020).