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Storm sequencing and beach profile variability at Hasaki, Japan

Sonja Eichentopf, José M. Alsina, Marios Christou, Yoshiaki Kuriyama, Harshinie Karunarathna Orcid Logo

Marine Geology, Volume: 424, Start page: 106153

Swansea University Author: Harshinie Karunarathna Orcid Logo

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DOI (Published version): 10.1016/j.margeo.2020.106153

Abstract

Beach profile evolution under storm sequence forcing presents an emerging research topic that has only been investigated at a limited number of sites. The occurrence and effects of storm sequencing on beach profile evolution are studied at Hasaki Beach, Japan, using weekly beach profile and two-hour...

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Published in: Marine Geology
ISSN: 0025-3227
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53519
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first_indexed 2020-02-20T19:59:22Z
last_indexed 2020-10-21T03:05:10Z
id cronfa53519
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spelling 2020-10-20T12:41:15.7068362 v2 53519 2020-02-13 Storm sequencing and beach profile variability at Hasaki, Japan 0d3d327a240d49b53c78e02b7c00e625 0000-0002-9087-3811 Harshinie Karunarathna Harshinie Karunarathna true false 2020-02-13 CIVL Beach profile evolution under storm sequence forcing presents an emerging research topic that has only been investigated at a limited number of sites. The occurrence and effects of storm sequencing on beach profile evolution are studied at Hasaki Beach, Japan, using weekly beach profile and two-hourly offshore wave measurements. During the 25-year study period, the supratidal beach at Hasaki is subjected to long-term accretion and steepening while the shoreline shows a long-term oscillation. In addition, oscillations of the supratidal beach volume and the shoreline at semi-annual and annual intervals are identified, which are largely controlled by the variability of the wave height. Hasaki Beach is subjected to frequent storms that often cluster in sequences, especially during the extra-tropical cyclone season (January to March). The majority of storms and sequences generate erosion of the beach above the low water level but some also lead to recovery. Despite a tendency for storms and storm sequences with larger power to cause more erosion, the present data does not demonstrate increased beach erosion by storm sequences. Following these findings, the tendency of the beach to evolve towards equilibrium and the importance of the antecedent beach morphology are demonstrated. Journal Article Marine Geology 424 106153 Elsevier BV 0025-3227 Storm sequences; Beach erosion; Beach recovery; Storm power; Beach equilibrium; Sandy beaches 1 6 2020 2020-06-01 10.1016/j.margeo.2020.106153 COLLEGE NANME Civil Engineering COLLEGE CODE CIVL Swansea University UKRI, NE/N013573/1 2020-10-20T12:41:15.7068362 2020-02-13T13:01:21.9610253 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Sonja Eichentopf 1 José M. Alsina 2 Marios Christou 3 Yoshiaki Kuriyama 4 Harshinie Karunarathna 0000-0002-9087-3811 5 53519__16859__380c404dd3fd48d3a8979b5997c846e4.pdf 53519.pdf 2020-03-17T09:29:44.2928576 Output 2971979 application/pdf Version of Record true true eng https://creativecommons.org/licenses/by/4.0/
title Storm sequencing and beach profile variability at Hasaki, Japan
spellingShingle Storm sequencing and beach profile variability at Hasaki, Japan
Harshinie Karunarathna
title_short Storm sequencing and beach profile variability at Hasaki, Japan
title_full Storm sequencing and beach profile variability at Hasaki, Japan
title_fullStr Storm sequencing and beach profile variability at Hasaki, Japan
title_full_unstemmed Storm sequencing and beach profile variability at Hasaki, Japan
title_sort Storm sequencing and beach profile variability at Hasaki, Japan
author_id_str_mv 0d3d327a240d49b53c78e02b7c00e625
author_id_fullname_str_mv 0d3d327a240d49b53c78e02b7c00e625_***_Harshinie Karunarathna
author Harshinie Karunarathna
author2 Sonja Eichentopf
José M. Alsina
Marios Christou
Yoshiaki Kuriyama
Harshinie Karunarathna
format Journal article
container_title Marine Geology
container_volume 424
container_start_page 106153
publishDate 2020
institution Swansea University
issn 0025-3227
doi_str_mv 10.1016/j.margeo.2020.106153
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
document_store_str 1
active_str 0
description Beach profile evolution under storm sequence forcing presents an emerging research topic that has only been investigated at a limited number of sites. The occurrence and effects of storm sequencing on beach profile evolution are studied at Hasaki Beach, Japan, using weekly beach profile and two-hourly offshore wave measurements. During the 25-year study period, the supratidal beach at Hasaki is subjected to long-term accretion and steepening while the shoreline shows a long-term oscillation. In addition, oscillations of the supratidal beach volume and the shoreline at semi-annual and annual intervals are identified, which are largely controlled by the variability of the wave height. Hasaki Beach is subjected to frequent storms that often cluster in sequences, especially during the extra-tropical cyclone season (January to March). The majority of storms and sequences generate erosion of the beach above the low water level but some also lead to recovery. Despite a tendency for storms and storm sequences with larger power to cause more erosion, the present data does not demonstrate increased beach erosion by storm sequences. Following these findings, the tendency of the beach to evolve towards equilibrium and the importance of the antecedent beach morphology are demonstrated.
published_date 2020-06-01T04:06:29Z
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score 10.999524

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