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A Century of Sea Level Data and the Uk's 2013/14 Storm Surges: an Assessment of Extremes and Clustering Using the Newlyn Tide Gauge Record : Volume 11, Issue 4 (05/08/2014)

By Wadey, M. P.

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Book Id: WPLBN0004020799
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: A Century of Sea Level Data and the Uk's 2013/14 Storm Surges: an Assessment of Extremes and Clustering Using the Newlyn Tide Gauge Record : Volume 11, Issue 4 (05/08/2014)  
Author: Wadey, M. P.
Volume: Vol. 11, Issue 4
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Brown, J. M., Haigh, I. D., & Wadey, M. P. (2014). A Century of Sea Level Data and the Uk's 2013/14 Storm Surges: an Assessment of Extremes and Clustering Using the Newlyn Tide Gauge Record : Volume 11, Issue 4 (05/08/2014). Retrieved from http://worldlibrary.net/


Description
Description: Ocean and Earth Sciences, University of Southampton, National Oceanography Centre, UK. For the UK's longest and most complete sea level record (Newlyn), we assess extreme high water events and their temporal clustering; prompted by the 2013/2014 winter of flooding and storms. These are set into context against this almost 100 yr record. We define annual periods for which storm activity, tides and sea levels can be compared on a year-by-year basis. Amongst the storms and high tides which affected Newlyn the recent winter produced the largest recorded high water (3 February 2014) and five others above a 1 in 1 yr return period. The large magnitude of tide and mean sea level, and the close inter-event spacings (of large return period high waters), suggests that the 2013/2014 high water season may be considered the most extreme on record. However, storm and sea level events may be classified in different ways. For example in the context of sea level rise (which we calculate linearly as 1.81 ± 0.1 mm yr−1 from 1915 to 2014), a lower probability combination of surge and tide occurred on 29 January 1948, whilst 1995/1996 storm surge season saw the most high waters of ≥ 1 in 1 yr return period. We provide a basic categorisation of five types of high water cluster, ranging from consecutive tidal cycles to multiple years. The assessment is extended to other UK sites (with shorter sea level records and different tide-surge characteristics), which suggests 2013/2014 was extreme, although further work should assess clustering mechanisms and flood system memory.

Summary
A century of sea level data and the UK's 2013/14 storm surges: an assessment of extremes and clustering using the Newlyn tide gauge record

Excerpt
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