Shoreline Coastal Evolution Model: Two Portuguese Case Studies

Coelho, Carlos; Gomes, Fernando Veloso; Silva, Raquel

doi:10.1142/9789812709554_0289

Cited by 11 publications

(7 citation statements)

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“…LTC was developed to support coastal zone planning and management in relation to coastal erosion problems (Coelho et al, 2005;Guimarães et al, 2016;Lima and Coelho, 2017). It was firstly presented at the ICCE 2004 (Coelho et al, 2004) and has been improved and extensively applied since then (Coelho, 2005;Coelho et al, , 2007Coelho et al, , 2013Coelho et al, , 2016Silva et al, 2007aSilva et al, , 2007bSilva, 2010;Roebeling et al, 2011Roebeling et al, , 2018Silva et al, 2011;Pereira and Coelho, 2013;Guimarães et al, 2016;Lima and Coelho, 2017;Lima, 2018). LTC combines a simple classical one-line model with a rule-based model for erosion/accretion volumes distribution along the beach profile (Coelho et al, 2007).…”

Section: Shoreline Evolution Assessmentmentioning

confidence: 99%

“…It was firstly presented at the ICCE 2004 (Coelho et al, 2004) and has been improved and extensively applied since then (Coelho, 2005;Coelho et al, , 2007Coelho et al, , 2013Coelho et al, , 2016Silva et al, 2007aSilva et al, , 2007bSilva, 2010;Roebeling et al, 2011Roebeling et al, , 2018Silva et al, 2011;Pereira and Coelho, 2013;Guimarães et al, 2016;Lima and Coelho, 2017;Lima, 2018). LTC combines a simple classical one-line model with a rule-based model for erosion/accretion volumes distribution along the beach profile (Coelho et al, 2007). This model was designed for sandy beaches, where the main cause of shoreline evolution is the alongshore sediment transport gradients, dependent on the wave climate, water levels, sediment sources and sinks, sediment characteristics and boundary conditions.…”

Section: Shoreline Evolution Assessmentmentioning

confidence: 99%

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An integrated physical and cost-benefit approach to assess groins as a coastal erosion mitigation strategy

Lima

Coelho

Gomes

et al. 2020

Coastal Engineering

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Section: Shoreline Evolution Assessmentmentioning

confidence: 99%

Section: Shoreline Evolution Assessmentmentioning

confidence: 99%

An integrated physical and cost-benefit approach to assess groins as a coastal erosion mitigation strategy

Lima

Coelho

Gomes

et al. 2020

Coastal Engineering

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“…It was firstly presented by and has been improved and largely applied since then [11,52,56,58,[60][61][62][64][65][66]. LTC combines a simple classical one-line model with a rule-based model for erosion/accretion volumes distribution along the beach profile [54]. This model was designed for sandy beaches, where the main cause of shoreline evolution is the alongshore sediment transport gradients, dependent on the wave climate, water levels, sediment's sources and sinks, sediment's characteristics and boundary conditions.…”

Section: Shoreline Evolution Assessmentmentioning

confidence: 99%

“…The wave transformation by refraction, diffraction and shoaling are modelled in a simplified manner [54], always taking into account the updated bathymetric data of each time step. According to Coelho [52], the refraction effects in LTC are estimated considering the Snell's law, while the shoaling effect is computed assuming that Airy's linear theory of sinewaves is valid.…”

Section: Figure 2 Ltc Definition Scheme (Adapted Frommentioning

confidence: 99%

Integrated Methodology for Physical and Economic Assessment of Coastal Interventions Impacts

Lima¹,

Coelho²

2021

J. Model. Optim.

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Due to economic, environmental, and social interest of coastal areas, together with their erosion problems, different coastal management strategies can be considered, with different physical (shoreline evolution) and economic (net present value, ratio benefit-cost, break-even point) consequences and impacts. Therefore, this work presents an integrated methodology that aims to compare and discuss the most promising coastal intervention scenarios to mitigate erosion problems and climate change effects, considering costs and benefits related to each intervention. The proposed methodology takes a step forward in assessing the coastal erosion mitigation strategies, incorporating three well-defined and sequential stages: shoreline evolution in a medium-term perspective; structures pre-design; and a cost-benefit assessment. To show the relevance of the methodology, a hypothetic case study and several intervention scenarios were assessed. In order to mitigate costal erosion two different situations were analyzed: the reference scenario and the intervention scenarios. 34 intervention scenarios were proposed and evaluated to mitigate the erosion verified. Depending on the parameter considered (reduce erosion areas, protect the full extension of urban waterfronts, improve the economic performance of the intervention by increasing the net present value, the benefit-cost ratio or decreasing the break-even time), best results are obtained for different scenarios. The definition of the best option for coastal erosion mitigation is complex and depends on the main goal defined for the intervention. In conclusion, costs and benefits analysis are demanded and it is considered that the proposed methodology allows choosing better physical and economic options for future coastal interventions, helping decision-making processes related to coastal management.

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“…Even though several protection works have been carried out in the last few years, such as the construction of several groins and an emergency seawall, this region of study continues to possess serious problems related to coastal erosion and shoreline retreat, as stressed in recent studies (Pais-Barbosa et al, 2006;Coelho et al, 2007). …”

Section: Study Domainmentioning

confidence: 99%

Impact of detached breakwaters on shoreline evolution: a case study on the Portuguese West Coast

Araújo

Bona

Teixeira

2014

Journal of Coastal Research

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Shoreline Coastal Evolution Model: Two Portuguese Case Studies

Cited by 11 publications

References 0 publications

An integrated physical and cost-benefit approach to assess groins as a coastal erosion mitigation strategy

An integrated physical and cost-benefit approach to assess groins as a coastal erosion mitigation strategy

Integrated Methodology for Physical and Economic Assessment of Coastal Interventions Impacts

Impact of detached breakwaters on shoreline evolution: a case study on the Portuguese West Coast

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