scholarly journals Crown Wall Modifications as Response to Wave Overtopping under a Future Sea Level Scenario: An Experimental Parametric Study for an Innovative Composite Seawall

2020 ◽  
Vol 10 (7) ◽  
pp. 2227 ◽  
Author(s):  
Pasquale Contestabile ◽  
Gaetano Crispino ◽  
Sara Russo ◽  
Corrado Gisonni ◽  
Furio Cascetta ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Water Depth ◽  
Wave Energy ◽  
Laboratory Tests ◽  
Management Strategies ◽  
Rear Side ◽  
Wave Energy Conversion ◽  
Wave Overtopping ◽  
Influence Of Water

The overtopping phenomenon at the rear side of breakwaters has particular importance in harbor protection. Undoubtedly, this topic needs to be taken even more seriously, considering the sea level rise. The present study focuses on the effectiveness in the reduction of the wave overtopping of a triangular parapet placed on the top of an innovative concrete superstructure. The last is part of the OBREC device (Overtopping BReakwater for wave Energy Conversion), an overtopping structure which is integrated into a traditional rubble-mound breakwater, to convert wave energy into electricity. Parametric laboratory tests, including the influence of water depth, have led to the evaluation of the accuracy of the main literature formulations and to the introduction of a new overtopping formula to take into account the influence of the parapet geometry. The results highlight the capability of the parapet in significantly increasing the hydraulic protection compared to a breakwater with a traditional crown wall. The findings from this work are expected to support in promoting and developing adaptive management strategies for existing coastal defenses and smart approaches in the construction and maintenance of new ones, with special reference to future sea-level-rise scenarios.

scholarly journals Vulnerability of Catalan (NW Mediterranean) ports to wave overtopping due to different scenarios of sea level rise

2015 ◽  
Vol 16 (5) ◽  
pp. 1457-1468 ◽  
Author(s):  
Joan Pau Sierra ◽  
Ignacio Casanovas ◽  
César Mösso ◽  
Marc Mestres ◽  
Agustín Sánchez-Arcilla
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Wave Overtopping ◽  
Nw Mediterranean

Unravelling the influence of water depth and wave energy on the facies diversity of shelf carbonates

Sedimentology ◽  
2014 ◽  
Vol 62 (2) ◽  
pp. 541-565 ◽  
Author(s):  
Sam J. Purkis ◽  
Gwilym P. Rowlands ◽  
Jeremy M. Kerr
Keyword(s):  
Water Depth ◽  
Wave Energy ◽  
Influence Of Water

On the Efficiency and Transmission Characteristics of a 1:20 Model Fixed Wave Energy Device

2003 ◽  
Author(s):  
E. Vijayakrishna Rapaka ◽  
S. Neelamani ◽  
R. Natarajan
Keyword(s):  
Wave Propagation ◽  
Water Column ◽  
Water Depth ◽  
Wave Energy ◽  
Oscillating Water Column ◽  
Wave Energy Conversion ◽  
Transmission Characteristics ◽  
Energy Device ◽  
Average Value ◽  
Model Study

Wave transmission and pneumatic efficiency of an oscillating water column (OWC) type wave energy device resting on group of piles is investigated using physical model study. The caisson blocks 45% of the water depth. The co-efficient of transmission of the device varies from 0.1 to 0.4 for B/L range of 0.1 to 0.7, where ‘B’ is the width of the caisson in the direction of wave propagation and ‘L’ is the wavelength. The pneumatic efficiency varies from 20% to 50% with an average value of 0.35. The results of the present study can be used in the design of OWC caisson used for both wave energy conversion and breakwater in deeper water.

scholarly journals Compound Inundation Impacts of Coastal Climate Change: Sea-Level Rise, Groundwater Rise, and Coastal Precipitation

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2776
Author(s):  
Reyhaneh Rahimi ◽  
Hassan Tavakol-Davani ◽  
Cheyenne Graves ◽  
Atalie Gomez ◽  
Mohammadebrahim Fazel Valipour
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Management Strategies ◽  
Two Dimensions ◽  
Surface Flow ◽  
Knowledge Gap ◽  
Coastal Watershed ◽  
Drainage Capacity ◽  
Groundwater Rise ◽  
Compound Effect

The importance of considering the compound effects of multiple hazards has increased in recent years due to their catastrophic impacts on human lives and property. Compound effects correspond to events with multiple concurrent or consecutive drivers, e.g., heavy storms, coastal flooding, high tides, and sea level rise (SLR). There is a recent evidence on inundation caused by SLR-driven groundwater rise, and there is a distinct knowledge gap in understanding the compound inundation effects of this phenomenon considering the important hydrologic and hydraulic considerations under compound events. To fill this knowledge gap, we developed a novel analytical framework to understand the movements of the surface flow under typical precipitation events considering their interaction with uprising groundwater and SLR in a coastal watershed located in Oakland Flatlands, CA, USA, home to several disadvantaged communities. This modelling approach simulates the dynamics of compound flooding in two dimensions of the earth surface in a fine resolution, which is critical for devising proper flood management strategies. The reason to focus on disadvantaged coastal communities is that such communities typically encounter disproportionate environmental injustices due to the lack of sufficient drainage capacity in their infrastructure. Our results show that by considering the compound effect of SLR, groundwater inundation and precipitation flooding, the drainage capacity of infrastructure will be substantially exceeded, such that over 700 acres of the built infrastructure could be flooded. This is a considerable increase compared to scenarios that do not consider compound effect, or scenarios that consider inappropriate combinations of driving factors. In sum, our results highlight the significance of considering compound effects in the coastal inundation analyses, with a particular emphasis on the role of groundwater rise.

Effect of Sea Level Rise on the Wave Overtopping Rate at Berm Breakwater

2019 ◽  
Vol 145 (5) ◽  
pp. 04019019
Author(s):  
Karthika Pillai ◽  
Charles Lemckert ◽  
Amir Etemad-Shahidi ◽  
Lorenzo Cappietti ◽  
Sigurdur Sigurdarson
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Wave Overtopping

scholarly journals Study on Maintenance of Non-Wave Overtopping Performance of Flaring Shaped Seawall against Sea Level Rise

2008 ◽  
Vol 55 ◽  
pp. 821-825
Author(s):  
Keisuke MURAKAMI ◽  
Jyunya NITTA ◽  
Daisuke MAKI ◽  
Yuji KAMIKUBO ◽  
Yasuto KATAOKA
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Wave Overtopping

scholarly journals The Potential Role of Artificial Marsh on Coastal Protection in Long Island Sound

2020 ◽  
Author(s):  
Amin Ilia
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Wave Energy ◽  
Salt Marshes ◽  
Hurricane Sandy ◽  
Sediment Supply ◽  
Coastal Protection ◽  
Climate Change Effects ◽  
Data Assessment ◽  
Accretion Rates

Connecticut marshes, like other marshes in the world, are vulnerable to anthropogenic and climate change effects. However, assessment of current sea level rise and average marsh accretion rates in Connecticut demonstrate sea level rise is not the main vulnerable factor for salt marshes loss. The study on the feasibility of developing an ecosystem-based on two coastlines in Connecticut, Guilford and Stratford, shows that both coastlines, like other coastlines in Connecticut, have limited wave energy, which is a positive factor for marsh growth. The available data assessment represents that sediment supply is the most important parameter to guarantee the resilience and sustainability of a newly developed salt marsh system in Connecticut. In Stratford, conditions for establishing a new ecosystem seem to be better, as the fetch length is pretty small, and there is some sediment supply for the ecosystem. In Guilford, wave energy is limited, but it is more than in Stratford case. Besides, sediment availability is low and the coastline experienced considerable erosion during hurricane Sandy and has not recovered yet.

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