Influence of mean sea level rise on tidal dynamics of the Ria de Aveiro lagoon, Portugal

Lopes, Carina L.; Dias, João Miguel

doi:10.2112/si70-097.1

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…The momentum equations in Equations (2) and (3) can be used to explain this phenomenon. The last term on the right-hand side of Equations (2) and (3) [53] estimated the impacts of SLR on tidal dynamics for the Ria de Aveiro lagoon in Portugal, using the ELCIRC 2D model. Chen and Liu [9] assessed the influences of SLR on tidal energy output for the Taiwan Strait.…”

Section: Discussion and Future Workmentioning

confidence: 99%

“…In other words, deeper water depth (i.e., SLR) leads to faster tidal currents if the bottom drag coefficient remains constant. Lopes and Dias [53] estimated the impacts of SLR on tidal dynamics for the Ria de Aveiro lagoon in Portugal, using the ELCIRC 2D model. Chen and Liu [9] assessed the influences of SLR on tidal energy output for the Taiwan Strait.…”

Section: Discussion and Future Workmentioning

confidence: 99%

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Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

Chen

Lin

et al. 2017

Energies

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Abstract:The tidal current power (TCP) resource, the impact of TCP extraction on hydrodynamics and the influence of sea-level rise (SLR) on TCP output in the coastal waters of Kinmen Island (Taiwan) are investigated using a state-of-the-art unstructured-grid depth-integrated numerical model. The model was driven by eight tidal constituents extracted from a global tidal prediction model and verified with time series of measured data for tide level and depth-averaged current. The simulations showed reasonable agreement with the observations; the skill index was in the excellent (0.71-0.93) range with regard to simulating tide level and currents. Model predictions indicated that the channel between Kinmen and Lieyu serves as an appropriate site for deploying the tidal turbines because of its higher tidal current and deeper water depth. The bottom friction approach was utilized to compute the average TCP over a spring-neap cycle (i.e., 15 days). Mean TCP reached its maximum to 45.51 kW for a coverage area of 0.036 km 2 when an additional turbine friction coefficient (C t ) increased to 0.08, and a cut-in speed of 0.5 m/s was used. The annual TCP output was estimated to be 1.08 MW. The impact of TCP extraction on the change in current is significant, with a maximum reduction rate of instant current exceeding 60%, and the extent of influence for the average current is 1.26 km in length and 0.30 km in width for the −0.05 m/s contour line. However, the impact of TCP extraction on the change in tide level is insignificant; the maximum change in amplitude is only 0.73 cm for the K 2 tide. The influence of SLR on the TCP output in Kinmen waters was also estimated. Modeling assessments showed that due to SLR produces faster tidal current, the annual TCP output increased to 1.52 MW, 2.01 MW, 2.48 MW and 2.97 MW under the same cut-in speed and coverage area conditions when SLR 0.25 m, SLR 0.5 m, SLR 0.75 m and SLR 1.0 m were imposed on the model.

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Section: Discussion and Future Workmentioning

confidence: 99%

Section: Discussion and Future Workmentioning

confidence: 99%

Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

Chen

Lin

et al. 2017

Energies

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“…In addition, large extents of salt marshes have degraded or disappeared since the end of the nineties, decreasing the natural protection of the system against inundations [19]. Previous studies further evidence that, in the absence of coastal protection works, the magnitude of inundations may well be intensified in the future with MSL rise, further increasing socioeconomic and environmental losses [16,20]. Despite the important contributions of previous works in assessing flood hazard and risk, it remains unclear how MSL rise will affect the vertical zonation of the lagoon, through the assessment of the extent of subtidal and intertidal regions, and, consequently, its natural protection against inundations.…”

Section: Introductionmentioning

confidence: 99%

Coastal Floods Induced by Mean Sea Level Rise—Ecological and Socioeconomic Impacts on a Mesotidal Lagoon

Silveira

Lopes

Pinheiro

et al. 2021

JMSE

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Coastal floods are currently a strong threat to socioeconomic activities established on the margins of lagoons and estuaries, as well as to their ecological equilibrium, a situation that is expected to become even more worrying in the future in a climate change context. The Ria de Aveiro lagoon, located on the northwest coast of Portugal, is not an exception to these threats, especially considering the low topography of its margins which has led to several flood events in the past. The growing concerns with these regions stem from the mean sea level (MSL) rise induced by climate changes as well as the amplification of the impacts of storm surge events, which are predicted to increase in the future due to higher mean sea levels. Therefore, this study aims to evaluate the influence of MSL rise on the inundation of Ria de Aveiro habitats and to assess the changes in inundation patterns resulting from frequent storm surges (2-year return period) from the present to the future, assessing their ecological and socioeconomic impacts. For this, a numerical model (Delft3D), previously calibrated and validated, was used to simulate the lagoon hydrodynamics under different scenarios combining MSL rise and frequent storm surge events. The numerical results demonstrated that MSL rise can change the vertical zonation and threaten the local habitats. Many areas of the lagoon may change from supratidal/intertidal to intertidal/subtidal, with relevant consequences for local species. The increase in MSL expected for the end of the century could make the lagoon more vulnerable to the effect of frequent storm surges, harming mostly agricultural areas, causing great losses for this sector and for many communities who depend on it. These extreme events can also affect artificialized areas and, in some cases, endanger lives.

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“…SLR would alter tidal dynamics, morphological change, and possibly the associated ecosystem of the tidal basin over the long-term. Lopes and Dias (2014) attempted to quantify changes in tidal patterns for a coastal lagoon, in response to the local mean sea level rise. They found tidal alteration due to variation of depth toward shallowness in the lagoon under mean SLR conditions.…”

Section: Introductionmentioning

confidence: 99%

Tidal Asymmetry and Energy Variation Due to Sea-Level Rise in a Macro Tidal Bay

Suh

2016

Journal of Coastal Research

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Influence of mean sea level rise on tidal dynamics of the Ria de Aveiro lagoon, Portugal

Cited by 9 publications

References 22 publications

Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

Coastal Floods Induced by Mean Sea Level Rise—Ecological and Socioeconomic Impacts on a Mesotidal Lagoon

Tidal Asymmetry and Energy Variation Due to Sea-Level Rise in a Macro Tidal Bay

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