气候变化领域集成服务门户(CCPortal): Future wave-climate driven longshore sediment transport along the Indian coast

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DOI	10.1007/s10584-020-02693-7
	Future wave-climate driven longshore sediment transport along the Indian coast
	Chowdhury P.; Behera M.R.; Reeve D.E.
发表日期	2020
ISSN	0165-0009
起始页码	405
结束页码	424
卷号	162 期号:2
英文摘要	Longshore sediment transport is an important nearshore process that governs coastal erosion/accretion and in turn defines the orientation of coastlines. In this study, we assess the changes in longshore transport rates along the Indian coast due to the potential changes in wave parameters under the RCP4.5 climate scenario. The projected wave climate for two time slices, ‘near-term/present’ (2011–2040) and ‘mid-term/future’ (2041–2070) were used to investigate changes in the corresponding sediment transport rates. An empirical model accounting for major wave parameters, longshore current, resulting sediment transport and shoreline evolution was used. It was found that most of the Indian coast exhibited the same drift direction in both time slices, although changes in transport magnitude were present. To give a broad-brush characterisation of the coastline, the shoreline elements were classified as erosive, accretive or stable based on the comparative longshore transport rates of neighbouring elements. Similar characterisations, carried out for both time slices, showed that about 35% of the total coastline would remain unaffected due to the changing wave climate in the future (i.e. there is little to no change); about 20% is expected to ‘worsen’ (i.e. expected to undergo higher magnitudes of erosion wrt present rate) and 45% to ‘improve’ (i.e. expected to accrete/reach stability). It was also observed that the net annual transport rates pertaining to the future period are not expected to change significantly with respect to the current scenario. This indicates that the change in longshore transport rates arising from future changes in wave climate as represented by the RCP4.5 climate change scenario will have a broadly neutral effect. © 2020, Springer Nature B.V.
英文关键词	Climate change; Coastal vulnerability; Indian coast; Longshore sediment transport; Wave climate
语种	英语
scopus关键词	Coastal engineering; Erosion; Landforms; Sediment transport; Sedimentation; Climate change scenarios; Coastal vulnerability; Longshore currents; Longshore sediment transport; Longshore transport; Sediment transport rate; Shoreline evolutions; Wave climates; Climate change; accretion; climate change; climate modeling; coastal evolution; erosion; longshore transport; nearshore dynamics; wave action; wave climate; India
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147117
作者单位	Inter Disciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Mumbai, 400076, India; School of Engineering, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, United Kingdom; Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India; College of Engineering, Swansea University, Swansea, SA2 8PP, United Kingdom
推荐引用方式 GB/T 7714	Chowdhury P.,Behera M.R.,Reeve D.E.. Future wave-climate driven longshore sediment transport along the Indian coast[J],2020,162(2).
APA	Chowdhury P.,Behera M.R.,&Reeve D.E..(2020).Future wave-climate driven longshore sediment transport along the Indian coast.Climatic Change,162(2).
MLA	Chowdhury P.,et al."Future wave-climate driven longshore sediment transport along the Indian coast".Climatic Change 162.2(2020).