Study on effectiveness of anti-erosion countermeasures in cua dai beach using 3-dimensional beach transformation model

Tsuyoshi Nagasawa, Mai Thi Thu Thuy, Nguyen Trung Viet, Hitoshi Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

So far, coastal erosion in low-lying coast has always been a typical problem. Recently, along with development of economy, infrastructure has been widely constructed, which results in propagating shoreline retreat in coastal area. Cua Dai beach is a typical case. It has been eroded rapidly in recent years and the coastal erosion has severely impacted the local tourism industry. This study aims to analyze the geomorphic change in Cua Dai beach and Cua Dai river-mouth by using the numerical simulation and evaluate the effectiveness of anti-erosion countermeasures. The change of sediment transport near the river mouth were considered by comparing the sediment transport rate in the past (1990) with that at present (2016), using three-dimensional beach transformation model. From some results, it is assumed that the asymmetric distribution of sediment input from the river can occur in present estuary and it is supposed to be main cause of the severe erosion of left coast area. Based on such characteristic of morphology change, the countermeasures (e.g.: beach nourishment) to correct the imbalance of longshore sediment supply from the river and slow down the coastal erosion were considered in this study.

Original languageEnglish
Title of host publicationAPAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts
EditorsNguyen Trung Viet, Tran Thanh Tung, Dou Xiping
PublisherSpringer
Pages815-821
Number of pages7
ISBN (Print)9789811502903
DOIs
Publication statusPublished - 2020
Event10th International Conference on Asian and Pacific Coasts, APAC 2019 - Hanoi, Viet Nam
Duration: 2019 Sep 252019 Sep 28

Publication series

NameAPAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts

Conference

Conference10th International Conference on Asian and Pacific Coasts, APAC 2019
Country/TerritoryViet Nam
CityHanoi
Period19/9/2519/9/28

Keywords

  • Beach nourishment
  • Coastal Erosion
  • Geomorphic change
  • River mouth

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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