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Bosom E.,Polytechnic University of Catalonia | Bosom E.,International Center for Coastal Resources Research | Jimenez J.A.,Polytechnic University of Catalonia | Jimenez J.A.,International Center for Coastal Resources Research
Advances in Geosciences | Year: 2010

A methodology for coastal hazard assessment at regional scale is presented and applied to the Catalan coast (NW Mediterranean). The method separately evaluates erosion and inundation hazards by using wave time series and beach characteristics (slope and sediment grain size). Obtained hazard time series are fitted to extreme probability distributions for different coastal sectors which are defined in function of local wave climate. This approach allows to compare the spatial variation of hazard intensities for a given probability of occurrence and, thus, to objectively identify the most hazardous areas along the coast in terms of erosion and inundation. Obtained results indicate that the coast north of Barcelona is more hazardous than the southern coast regarding inundation for any given probability. With respect to storm-induced erosion, the central coast of Catalonia is the less hazardous area, although spatial variations in erosion along the coast are smaller than the observed for inundation. © Author(s) 2010.


Mestres M.,International Center for Coastal Resources Research | Mestres M.,Polytechnic University of Catalonia | Grino M.,Polytechnic University of Catalonia | Sierra J.P.,International Center for Coastal Resources Research | And 3 more authors.
Energy | Year: 2016

The potential power output expected from the installation of a tidal farm near the mesotidal Ria de Vigo (NW Spain) is assessed using two different tidal stream energy converters (TEC). For this, the results of a previous resource assessment based on a 28-day long hydrodynamic simulation are used. From this data we identify the areas susceptible of hosting the farms, select the optimal location for them, and assess the total available and extractable energy for each turbine type. Finally, using a simple farm design based on standard inter-turbine separation, we estimate the expected power supplied by the farm. Irrespective of the site, the total available tidal power in the areas susceptible of hosting the farms is around 150 MW; at the optimal location, the hourly extractable power is about 22.5 MW, of which only between 10% and 15% can be harnessed by the designed farms, powering between 4411 and 6638 homes. A local analysis of the most energetic subregions within these sites increases this ratio up to 30%. Nevertheless, the power output is sufficient to fulfil the needs of between 1660 and 2213 households, depending on the chosen site and the selected TEC. © 2016 Elsevier Ltd


Sano M.,University of Cantabria | Sano M.,Griffith University | Jimenez J.A.,Polytechnic University of Catalonia | Jimenez J.A.,International Center for Coastal Resources Research | And 5 more authors.
Ocean and Coastal Management | Year: 2011

Coastal erosion and storms represent a source of risk for settlements and infrastructure along the coast. At the same time, coastal natural assets, including landscape, are threatened by increasing development mainly driven by tourism. The Mediterranean coast is especially vulnerable to these processes, considering its high biological and cultural diversity. An additional challenge is represented by climate change, as it will force coastal communities to apply more or less drastic adaptation strategies. Coastal setbacks, used to protect coastal communities and infrastructure from storms and erosion, and to preserve coastal habitats and landscapes from degradation, is one of the main instruments suggested by the Protocol on Integrated Coastal Zone Management of the Barcelona Convention, entered into force on the 24 of March 2011. Its implementation has the potential to influence coastal policies in other regions, such as the neighbouring Black Sea.The CONSCIENCE project has formalized concepts and conducted specific studies to provide new tools for coastal erosion management practice. The objective of this paper is to present a synthesis of the research conducted into coastal setbacks for coastal erosion management and climate change adaptation. This is done by analysing the requirement of the Protocol, current processes and management practices in two case study areas (Costa Brava Bays in Spain and Danube Delta, in Romania) and the new challenges posed by climate change. © 2011 Elsevier Ltd.


Sanchez-Arcilla A.,International Center for Coastal Resources Research | Sanchez-Arcilla A.,Polytechnic University of Catalonia | Jimenez J.A.,International Center for Coastal Resources Research | Jimenez J.A.,Polytechnic University of Catalonia | Marchand M.,Deltares
Ocean and Coastal Management | Year: 2011

This paper summarises the main findings of the Conscience research project, whose primary objective was to define and validate, through pilot applications, a methodology to support the implementation, for European coasts, of concepts such as coastal resilience, favorable sediment status, strategic sediment reservoirs and coastal sediment cells. The Conscience conceptual framework to managing coastal erosion has proved to be an efficient tool, because it provides a consistent approach where objective (data) and subjective (desired status) information are analyzed and compared from the standpoint of a consensus target (objective). Moreover, this is done using the best available knowledge and observations, considering always their level of uncertainty, to conduct a sustainable management policy for coastal erosion. The methodology has been tested in field cases from The Netherlands, Poland, Romania, Spain, United Kingdom and Ireland, to cover different time and space scales, together with a wide range of processes and different management objectives. © 2011 Elsevier Ltd.


Jimenez J.A.,International Center for Coastal Resources Research | Jimenez J.A.,Polytechnic University of Catalonia | Gracia V.,International Center for Coastal Resources Research | Gracia V.,Polytechnic University of Catalonia | And 5 more authors.
Ocean and Coastal Management | Year: 2011

The applicability of recommendations of the Eurosion project to define a policy to manage coastal erosion has been tested at the " beach" scale in the Mediterranean coast. Thus, a favourable sediment status has been defined for these beaches taking into account their main functions: recreation and protection. Because they act at two different seasons, this status needs to be seasonally defined. For the protection function, the favourable sediment status depends on the level of safety fixed by the manager taking into account the importance of existing infrastructures and, for recreation it depends on the use density of the beach. The concept has been formalized for beach management within a framework where benchmarking plays a crucial role to determine the need of intervention. This has been illustrated for open cell beaches where one of its boundaries can permit variations in the sediment budget and for pocket beaches that act as closed sediment cells. © 2011 Elsevier Ltd.


Mestres M.,Polytechnic University of Catalonia | Mestres M.,International Center for Coastal Resources Research | Grifoll M.,Polytechnic University of Catalonia | Grifoll M.,International Center for Coastal Resources Research | And 2 more authors.
Continental Shelf Research | Year: 2016

Flow intensification episodes lasting more than 12 h are observed occasionally at different locations along the Northwestern Mediterranean coast. In the last years, these pulses have hindered ship operations outside the Barcelona harbour, thus attracting the attention of the port authorities. In this paper, the strongest intensification events in the Barcelona coast area are quantified and characterized in order to identify the mechanisms which generate them. For this, current, sea level and meteorological measured and modelled data, at local and regional scale, are analysed. The results show that the flow accelerations are due to the combination of a narrow coastal shelf and the prevalence of a strong and sustained wind from the NE to SE. The synoptic atmospheric conditions that lead to this meteorological scenario are described. For one of the events, the presence and contribution to the current fluctuations of a coastal trapped wave, likely generated at the Eastern edge of the Gulf of Lions shelf, and other factors such as a freshwater discharge are also identified and discussed. © 2015 Elsevier Ltd.


Ariza E.,Florida International University | Ballester R.,University of Girona | Rigall-I-Torrent R.,University of Girona | Salo A.,GRUGET Research Group Tourism Management | And 5 more authors.
Ocean and Coastal Management | Year: 2012

The relationships between two traditional economic valuation methods, Travel Cost Method (TCM) and Hedonic Prices (HPs) are tested in a sun-and-beach tourist-oriented area in the Northwestern Mediterranean coast in order to appraise/value beach integral quality and its attributes. Traditional economic methods do not seem to capture the aggregate quality of beaches, although this study has shown that positive relationships were found between HP and integral beach quality. Instead, these methods are more (positively) related to specific aspects such as Services and Facilities Quality, Natural Conditions Quality (dune system development) and Access and Parking Quality. The results of this study show that these methods do not sufficiently value beach social-ecological resources at the study site. In this paper we also compared users' economic beach valuation (using TCM and HP) with the expenditure on general maintenance and sediment management by local managers. The results show an important gap between investments made by managers (less than 1 million €/year) and users' economic valuation (more than 1 million €/day at the peak of the season). These results suggest the feasibility of establishing a beach management tax for beach-related economic activities that could be used to improve the weakest aspects of beach management in the region. © 2012 Elsevier Ltd.


Alvarado-Aguilar D.,Polytechnic University of Catalonia | Alvarado-Aguilar D.,International Center for Coastal Resources Research | Jimenez J.A.,Polytechnic University of Catalonia | Jimenez J.A.,International Center for Coastal Resources Research | Nicholls R.J.,University of Southampton
Natural Hazards | Year: 2012

The impact of relative sea-level rise (RSLR), damage to and possible responses in the Ebro Delta (NW Mediterranean) has been analyzed. Impact was determined by delineating delta areas prone to flooding under different RSLR scenarios. The surface areas of the different habitats were then quantified for flooding impact and affected ecosystems were assessed. The obtained results enabled us to characterize the Ebro Delta as a coastal environment that is highly sensitive to changes in sea level, with affected flooded areas likely to range between about 45 and 60 % for different RSLR scenarios, from which about 26 % would be inundated by subsidence only. In absolute terms, the habitat most likely to be affected by flooding was cropland. In relative terms, the most affected habitats were those typical of the lowest areas: saltwater wetlands, riparian buffer and areas of saline vegetation. Under present deltaic evolution with no sediment supply, adaptation is considered a plausible option for managing the Ebro delta under a RSLR scenario. This implies permitting surface area losses or land use changes in the lower parts of the delta, where natural values will be reinforced, and concentrating agriculture in the higher parts of the deltaic plain. © 2012 Springer Science+Business Media B.V.

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