Flood risk and overtopping assessment for an exposed coastal road

被引：1

作者：

Tryggvadottir, Bryndis ^{[1
]}

Siguroarson, Sigurour ^{[1
]}

Gislason, Fannar ^{[1
]}

Sveinbjornsson, Petur Ingi ^{[1
]}

Hrafnkelsson, Birgir ^{[2
]}

机构：

[1] Iceland Rd & Coastal Adm, Coastal Dept, Gardabaer, Iceland

[2] Univ Iceland, Fac Phys Sci, Dept Math, Reykjavik, Iceland

来源：

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-MARITIME ENGINEERING | 2024年 / 177卷 / 3-4期

关键词：

beach erosion; coastal engineering; flood risk; mathematical modelling; sea defences; waves & wave loading; wave overtopping;

D O I：

10.1680/jmaen.24.00003

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The coastal village of V & iacute;k is located on the South Coast of Iceland. The area is subjected to the full force of extratropical cyclones of the North Atlantic. The village beach is not a stable phenomenon, after a nearby volcanic eruption in 1918 it accreted by 500 m over 50 years but has eroded at similar rate since 1970, which poses increased flood risk in the area. There are plans to move the current ring road, that lies through the village, with one possibility of it running along the coast. A study was conducted using multivariate extreme value modelling to determine the desired coastal defences needed for the new road. The method in question uses a multivariate joint probability model to simulate variables that cause coastal flooding events. It generates a large sample of extreme ocean events based on a 52-year time series of hindcast data. The large sample of extreme events were then used to determine return periods for overtopping events and to determine a desired crest height for coastal defence structures. The study puts forth suggestions of improvements on current coastal defence structures and the design specification for defence structures along a planned road along the coast.

引用

页码：117 / 136

页数：20

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