Shoreline Evolution Under the Influence of Oceanographic and Monsoon Dynamics: The Case of Terengganu, Malaysia

Chronic erosion of sandy coasts is a continuous potential threat for the growing coastal communities worldwide. The prediction of shoreline evolution is therefore key issue for robust decision making worldwide, especially in the context of climate change. Shorelines respond to various complex processes interacting at several temporal and spatial scales, making shoreline reconstructions and predictions challenging and uncertain, especially on long time scales (e.g. decades or century). Despite the increasing progresses in addressing uncertainties related to the physics of Sea Level Rise, very little effort is made towards understanding and reducing the uncertainties related to wave driven coastal response. To fill this gap, we analyse the uncertainties associated with long-term (2 decades) modelling of the cross-shore transport dominated high-energy sandy coast around Truc Vert beach, SW France, which has been surveyed semi-monthly over the last 12 years.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/_NBJ2v-koMs

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ASSESSMENT OF COASTAL VULNERABILITY BASED ON THE USE OF INTEGRATED LOW-COST MONITORING APPROACH AND BEACH MODELLING: TWO ITALIAN STUDY

Coastal Engineering Proceedings ◽

10.9753/icce.v36v.management.13 ◽

2020 ◽

pp. 13

Author(s):

Renata Archetti ◽

Maria Gabriella Gaeta ◽

Fabio Addona ◽

Leonardo Damiani ◽

Alessandra Saponieri ◽

...

Keyword(s):

Low Cost ◽

Integrated Approach ◽

Video Monitoring ◽

Monitoring Systems ◽

Swash Zone ◽

Coastal Vulnerability ◽

Italian Study ◽

Shoreline Evolution ◽

Low Costs ◽

Run Up

The use of video-monitoring techniques is significantly increased due to the diffusion of high-resolution cameras at relatively low-costs and they are largely used to estimate the shoreline evolution and wave run-up, as important coastal state indicators to be monitored and predicted for the assessment of flooding and erosion risks. In this work, we present an integrated approach based on the results from the low-cost video monitoring systems and the numerical modeling chain by means of SWAN and XBeach to accurately simulate and predict the swash zone processes.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/nLGNneJzmIU

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An Analysis of Shoreline Changes Using Combined Multitemporal Remote Sensing and Digital Evaluation Model

Civil Engineering Journal ◽

10.28991/cej-2020-03091448 ◽

2020 ◽

Vol 6 (1) ◽

pp. 1-10 ◽

Cited By ~ 10

Author(s):

Dao Dinh Cham ◽

Nguyen Thai Son ◽

Nguyen Quang Minh ◽

Nguyen Tien Thanh ◽

Tran Tuan Dung

Keyword(s):

Remote Sensing ◽

Multiple Scales ◽

Evaluation Model ◽

Beach Erosion ◽

Shoreline Evolution ◽

The North ◽

Digital Evaluation ◽

Significant Difference ◽

Erosion And Accretion ◽

Multitemporal Remote Sensing

Cua Dai estuary belonged to Quang Nam province is considered to be one of the localities of Vietnam having a complex erosion and accretion process. In this area, sandbars are recently observed with lots of arguments about the causes and regimes of formation. This could very likely result of not reliable source of information on shoreline evolution and a lack of historical monitoring data. Accurately identification of shoreline positions over a given period of time is a key to quantitatively and accurately assessing the beach erosion and accretion. The study is therefore to propose an innovative method of accurately shoreline positions for an analysis of coastal erosion and accretion in the Cua Dai estuary. The proposed technology of multitemporal remote sensing and digital evaluation model with tidal correction are used to analyse the changes in shoreline and estimate the rate of erosion and accretion. An empirical formula is, especially, exposed to fully interpret the shoreline evolution for multiple scales based on a limitation of satellite images during 1965 to 2018. The results show that there is a significant difference of shoreline shift between corrections and non-corrections of tidal. Erosion process tends to be recorded in the Cua Dai cape located in the Cua Dai ward, especially in the An Luong cape located in the Duy Hai commune with the length of 1050 m. Furthermore, it is observed that there is much stronger erosion in the north side compared with south side of Cua Dai estuary.

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LONG TERM MORPHOLOGICAL MODELLING

Coastal Engineering Proceedings ◽

10.9753/icce.v32.sediment.64 ◽

2011 ◽

Vol 1 (32) ◽

pp. 64

Author(s):

Sten Esbjørn Kristensen ◽

Rolf Deigaard ◽

Martin Anders Taaning ◽

Jørgen Fredsøe ◽

Nils Drønen ◽

...

Keyword(s):

Time Scale ◽

Surf Zone ◽

Coastal Structures ◽

Model Concept ◽

General Applicability ◽

Shoreline Evolution ◽

Realistic Representation ◽

Morphological Modelling ◽

Constant Shape

A morphological modelling concept for long term nearshore morphology is proposed and examples of its application are presented and discussed. The model concept combines parameterised representations of the cross-shore morphology, with a 2DH area model for waves, currents and sediment transport in the surf zone. Two parameterization schemes are tested for two different morphological phenomena: 1) Shoreline changes due to the presence of coastal structures and 2) alongshore migration of a nearshore nourishment and a bar by-passing a harbour. In the case of the shoreline evolution calculations, a concept often used in one-line modelling of cross-shore shifting of an otherwise constant shape cross-shore profile is applied for the case of a groyne and a detached breakwater. In the case of alongshore bar/nourishment migration an alternative parameterization is adopted. All examples are presented, analysed and discussed with respect to the question of realistic representation, time scale and general applicability of the model concept.

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