This page has only limited features, please log in for full access.
While many coastal areas are affected by coastal squeeze, quantitative estimations of this phenomenon are still limited. Ambiguity concerning the degree of coastal squeeze, combined with a lack of knowledge on its interaction with human activities may lead to inadequate and unsuccessful management responses. The objective of the present research was to quantify the degree of coastal squeeze on the highly urbanized coast of Mazatlan, Mexico, and to investigate the relationship between the development of tourism and coastal squeeze from various time perspectives. The Drivers, Exchanges, States of the environment, Consequences, and Responses (DESCR) framework was applied to identify the chronic, negative consequences of dense tourism in the area, together with the assessment of coastal squeeze. A Tourism Load Capacity (TLC) estimation was made and correlated with the DESCR results, showing that coastal squeeze is inversely correlated with tourism load in Mazatlan. The medium-intensity coastal squeeze currently experienced in Mazatlan requires interventions to avoid severe degradation of the ecosystem on which the local tourism industry relies, for which immediate, long-term, and administrative recommendations are given.
Pedro Aguilar; Edgar Mendoza; Rodolfo Silva. Interaction between Tourism Carrying Capacity and Coastal Squeeze in Mazatlan, Mexico. Land 2021, 10, 900 .
AMA StylePedro Aguilar, Edgar Mendoza, Rodolfo Silva. Interaction between Tourism Carrying Capacity and Coastal Squeeze in Mazatlan, Mexico. Land. 2021; 10 (9):900.
Chicago/Turabian StylePedro Aguilar; Edgar Mendoza; Rodolfo Silva. 2021. "Interaction between Tourism Carrying Capacity and Coastal Squeeze in Mazatlan, Mexico." Land 10, no. 9: 900.
Shipping water events that propagate over the decks of marine structures can generate significant loads on them. As the configuration of the structure may affect the loading behaviour, investigation of shipping water loads in different structural conditions is required. This paper presents a numerical investigation of the effect of deck roughness and deck length on vertical and horizontal loads caused by shipping water on a fixed structure. Systematic analyses were carried out of isolated shipping water events generated with the wet dam-break method and simulated with OpenFoam Computational Fluid Dynamics toolbox. The numerical approach was validated and then the shipping water loads were examined. It was found that, as roughness increased, the maximum vertical and horizontal loads showed a delay. As the deck length reduced, the vertical backflow loads tended to increase. These results suggest it may be worthwhile examining the behaviour of shipping water as it propagates over rough surfaces caused by fouling, corrosion, or those with small structural elements distributed on them. Moreover, the effect of deck length is important in understanding the order of magnitude of loads on structures with variable deck lengths, and those which have forward and backflow loading stages.
Paola Rodríguez-Ocampo; Jassiel Fontes; Michael Ring; Edgar Mendoza; Rodolfo Silva. A CFD Numerical Study to Evaluate the Effect of Deck Roughness and Length on Shipping Water Loading. Water 2021, 13, 2063 .
AMA StylePaola Rodríguez-Ocampo, Jassiel Fontes, Michael Ring, Edgar Mendoza, Rodolfo Silva. A CFD Numerical Study to Evaluate the Effect of Deck Roughness and Length on Shipping Water Loading. Water. 2021; 13 (15):2063.
Chicago/Turabian StylePaola Rodríguez-Ocampo; Jassiel Fontes; Michael Ring; Edgar Mendoza; Rodolfo Silva. 2021. "A CFD Numerical Study to Evaluate the Effect of Deck Roughness and Length on Shipping Water Loading." Water 13, no. 15: 2063.
This paper presents a techno-economic assessment of hydrokinetic energy of Cozumel Island, where ocean currents have been detected, but tourist activities are paramount. The main objective of this research is to identify devices that have been used to harvest hydrokinetic power elsewhere and perform an economic analysis as to their implementation in the Mexican Caribbean. First, the energy potential of the area was evaluated using simulated data available through the HYCOM consortium. Then, for four pre-commercial and commercial turbines, technical and economic analyses of their deployments were performed. Socio-environmental constraints were reviewed and discussed. Three optimal sites were identified, with an average annual hydrokinetic energy density of 3–6 MWh/m2-year. These sites meet the socio-environmental requirements for marine kinetic energy harvesting. Of the turbines considered in the analysis, the best energy price/cost ratio is that of SeaGen device, with a maximum theoretical energy extraction of 1319 MWh/year with a Capacity Factor of 12.5% and a Levelised Cost of Energy (LCOE) of 1148 USD/MWh. Using this device, but assuming a site-specific design that achieves at least 25% of Capacity Factor, 20-year useful life, and a discount rate of 0.125, the LCOE would be 685.6 USD/MWh. The approach presented here can be applied for techno-economic analyses of marine turbines in other regions.
Juan Bárcenas Graniel; Jassiel Fontes; Hector Garcia; Rodolfo Silva. Assessing Hydrokinetic Energy in the Mexican Caribbean: A Case Study in the Cozumel Channel. Energies 2021, 14, 4411 .
AMA StyleJuan Bárcenas Graniel, Jassiel Fontes, Hector Garcia, Rodolfo Silva. Assessing Hydrokinetic Energy in the Mexican Caribbean: A Case Study in the Cozumel Channel. Energies. 2021; 14 (15):4411.
Chicago/Turabian StyleJuan Bárcenas Graniel; Jassiel Fontes; Hector Garcia; Rodolfo Silva. 2021. "Assessing Hydrokinetic Energy in the Mexican Caribbean: A Case Study in the Cozumel Channel." Energies 14, no. 15: 4411.
At present, many coastal ecosystems worldwide are highly affected by anthropic activities. La Mancha lagoon, in the state of Veracruz, Mexico, is an important ecosystem due to the wide array of ecosystem services that it provides. In this paper, an analysis of the environmental balances of the lagoon is outlined, using the Drivers, Exchanges, State of the Environment, Consequences and Responses (DESCR) tool. The methodological framework considers the interrelationships between the natural systems and the forces of change that alter the performance of the natural environment, in order to provide an overview of actions that may reduce negative consequences. The study area has been impacted by anthropic development, such as changes in land use for agricultural and livestock activities, loss of mangroves due to logging and modifications, carried out by local fishermen, to the natural hydrodynamics of the lagoon that alter the salinity and affect the ecosystem dynamics. Following analysis of the area, using the DESCR tool, the responses proposed include long-term environmental impact evaluation, with the aim of preserving the local coastal ecosystems.
Samantha Chacón Abarca; Valeria Chávez; Rodolfo Silva; M. Martínez; Giorgio Anfuso. Understanding the Dynamics of a Coastal Lagoon: Drivers, Exchanges, State of the Environment, Consequences and Responses. Geosciences 2021, 11, 301 .
AMA StyleSamantha Chacón Abarca, Valeria Chávez, Rodolfo Silva, M. Martínez, Giorgio Anfuso. Understanding the Dynamics of a Coastal Lagoon: Drivers, Exchanges, State of the Environment, Consequences and Responses. Geosciences. 2021; 11 (8):301.
Chicago/Turabian StyleSamantha Chacón Abarca; Valeria Chávez; Rodolfo Silva; M. Martínez; Giorgio Anfuso. 2021. "Understanding the Dynamics of a Coastal Lagoon: Drivers, Exchanges, State of the Environment, Consequences and Responses." Geosciences 11, no. 8: 301.
Renewable ocean energy is an alternative that will help reduce carbon emissions into the atmosphere. However, there is uncertainty about potential environmental impacts of the technologies involved, because these are new and untested, and methods for the evaluation and monitoring of environmental impacts are scarce. We performed a systematic literature review (well-structured and organized, always looking for the same terms), followed by a systemic analysis in which we considered the interactions between environmental stressors, effects, receptors, and their responses. We found that most studies are theoretical revisions and modelling exercises, although field and laboratory experiments and observations are beginning to accumulate. Environmental stressors are features in the environment (energy-harvesting devices) that modify the natural dynamics of the system. The effects are the changes in the environment induced by the stressors; the most frequently acknowledged and measured are noise, collision, habitat change, hydro-sedimentary dynamics and wave modifications. The receptors of these changes are marine fauna, such as mammals, fish, sea birds, and benthic communities, as well as the shoreline. Their corresponding responses include behaviour, injuries/death, biodiversity loss, alterations in food webs and shoreline change. Once the different components of the environmental impacts are identified, it is important to develop monitoring and mitigation strategies to prevent, or minimize, environmental damage. Ocean energy is a promising option to reduce CO2 emissions into the atmosphere, but the implementation of adequate monitoring and mitigation technologies requires multidisciplinary efforts to obtain effectively clean, renewable energy and to maintain healthy and functional ecosystems.
M.L. Martínez; G. Vázquez; O. Pérez-Maqueo; R. Silva; P. Moreno-Casasola; G. Mendoza-González; J. López-Portillo; I. MacGregor-Fors; G. Heckel; J.R. Hernández-Santana; J.G. García-Franco; G. Castillo-Campos; A.L. Lara-Domínguez. A systemic view of potential environmental impacts of ocean energy production. Renewable and Sustainable Energy Reviews 2021, 149, 111332 .
AMA StyleM.L. Martínez, G. Vázquez, O. Pérez-Maqueo, R. Silva, P. Moreno-Casasola, G. Mendoza-González, J. López-Portillo, I. MacGregor-Fors, G. Heckel, J.R. Hernández-Santana, J.G. García-Franco, G. Castillo-Campos, A.L. Lara-Domínguez. A systemic view of potential environmental impacts of ocean energy production. Renewable and Sustainable Energy Reviews. 2021; 149 ():111332.
Chicago/Turabian StyleM.L. Martínez; G. Vázquez; O. Pérez-Maqueo; R. Silva; P. Moreno-Casasola; G. Mendoza-González; J. López-Portillo; I. MacGregor-Fors; G. Heckel; J.R. Hernández-Santana; J.G. García-Franco; G. Castillo-Campos; A.L. Lara-Domínguez. 2021. "A systemic view of potential environmental impacts of ocean energy production." Renewable and Sustainable Energy Reviews 149, no. : 111332.
This paper presents a multivariate classification of the global wave climate into types driven by atmospheric circulation patterns. The primary source of the net long-term variability is evaluated based on historical wave simulations. Results show that the monsoon, extratropical, subtropical, and polar wave climate types of the Pacific and North Atlantic Oceans are dominated by natural variability, whereas the extratropical and subtropical wave climate types in the Indian Ocean, and the tropical wave climate types of the Atlantic and Pacific Oceans exhibit a global warming signal. In the Pacific sector of the Southern Ocean, strong natural variability may mask a global warming signal that is yet to emerge as being statistically significant. In addition, wave climate teleconnections were found across the world that can provide a framework for joint strategies to achieve the goals of climate adaption for resilient coastal communities and environments.
I. Odériz; R. Silva; T.R. Mortlock; N. Mori; T. Shimura; A. Webb; R. Padilla‐Hernández; S. Villers. Natural Variability and Warming Signals in Global Ocean Wave Climates. Geophysical Research Letters 2021, 48, 1 .
AMA StyleI. Odériz, R. Silva, T.R. Mortlock, N. Mori, T. Shimura, A. Webb, R. Padilla‐Hernández, S. Villers. Natural Variability and Warming Signals in Global Ocean Wave Climates. Geophysical Research Letters. 2021; 48 (11):1.
Chicago/Turabian StyleI. Odériz; R. Silva; T.R. Mortlock; N. Mori; T. Shimura; A. Webb; R. Padilla‐Hernández; S. Villers. 2021. "Natural Variability and Warming Signals in Global Ocean Wave Climates." Geophysical Research Letters 48, no. 11: 1.
Although the technologies involved in converting saline gradient energy (SGE) are rapidly developing, few studies have focused on evaluating possible environmental impacts. In this work, the environmental impacts of a hypothetical 50 kW RED plant installed in La Carbonera Lagoon, Yucatan, Mexico, are addressed. The theoretical support was taken from a literature review and analysis of the components involved in the pressure retarded osmosis (PRO) and reverse electrodialysis (RED) technologies. The study was performed under a three-stage scheme (construction, operation, and dismantling) for which the stress-inducing factors that can drive changes in environmental elements (receptors) were determined. In turn, the possible modifications to the dynamics of the ecosystem (responses) were assessed. Since it is a small-scale energy plant, only local impacts are expected. This study shows that a well-designed SGE plant can have a low environmental impact and also be of benefit to local ecotourism and ecosystem conservation while contributing to a clean, renewable energy supply. Moreover, the same plant in another location in the same system could lead to huge modifications to the flows and resident times of the coastal lagoon water, causing great damage to the biotic and abiotic environment.
Etzaguery Marin-Coria; Rodolfo Silva; Cecilia Enriquez; M. Martínez; Edgar Mendoza. Environmental Assessment of the Impacts and Benefits of a Salinity Gradient Energy Pilot Plant. Energies 2021, 14, 3252 .
AMA StyleEtzaguery Marin-Coria, Rodolfo Silva, Cecilia Enriquez, M. Martínez, Edgar Mendoza. Environmental Assessment of the Impacts and Benefits of a Salinity Gradient Energy Pilot Plant. Energies. 2021; 14 (11):3252.
Chicago/Turabian StyleEtzaguery Marin-Coria; Rodolfo Silva; Cecilia Enriquez; M. Martínez; Edgar Mendoza. 2021. "Environmental Assessment of the Impacts and Benefits of a Salinity Gradient Energy Pilot Plant." Energies 14, no. 11: 3252.
This work reports, for the first time, the synthesis of silver nanoparticles using extracts of the species of Sargassum natans and Sargassum fluitans (AgNPs-S). Their antibacterial and catalytic properties are compared with silver nanoparticles obtained by chemical synthesis (AgNPs-C). The characterization of AgNPs-S and AgNPs-C was carried out using ultraviolet–visible spectroscopy (UV–Vis), dynamic light scattering (DLS), zeta potential, a scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis. The synthesis of silver nanoparticles using Sargassum extract was optimized through varying experimental parameters, such as the type of solvent used to prepare the extract, the volume of the extract, and the pH of the system. The most efficient sample (AgNPs-S) was prepared with a water–ethanol-based extract, using a 3:1 volumetric ratio of extract: a precursor salt with the addition of 1 mL of NaOH pH = 14. The AgNPs-C were spherical in shape, with an average particle size of 11.55 nm, while the AgNPs-S were polyhedral shaped, with an average particle size of 26.39 nm. The synthesized AgNPs-S were found to have significantly higher catalytic activity for the degradation of methylene blue and more effective antibacterial activity against Staphylococcusaureus and Pseudomonas aeruginosa than AgNPs-C.
Jose López-Miranda; Rodrigo Esparza; Marlen González-Reyna; Beatriz España-Sánchez; Angel Hernandez-Martinez; Rodolfo Silva; Miriam Estévez. Sargassum Influx on the Mexican Coast: A Source for Synthesizing Silver Nanoparticles with Catalytic and Antibacterial Properties. Applied Sciences 2021, 11, 4638 .
AMA StyleJose López-Miranda, Rodrigo Esparza, Marlen González-Reyna, Beatriz España-Sánchez, Angel Hernandez-Martinez, Rodolfo Silva, Miriam Estévez. Sargassum Influx on the Mexican Coast: A Source for Synthesizing Silver Nanoparticles with Catalytic and Antibacterial Properties. Applied Sciences. 2021; 11 (10):4638.
Chicago/Turabian StyleJose López-Miranda; Rodrigo Esparza; Marlen González-Reyna; Beatriz España-Sánchez; Angel Hernandez-Martinez; Rodolfo Silva; Miriam Estévez. 2021. "Sargassum Influx on the Mexican Coast: A Source for Synthesizing Silver Nanoparticles with Catalytic and Antibacterial Properties." Applied Sciences 11, no. 10: 4638.
Between 1959 and 2010, a coastline retreat of 2.4 m/year and erosion of up to 174 m were recorded around Turbo, in northern Colombia. This degraded coastal system is the result of a poorly planned coastal defence scheme, combined with a lack of formal technical methodologies for diagnosis and monitoring. The coastal system cannot provide the protection services required by the local community. From 2017 to 2019, the group monitored urban beach profiles in a small area close to the town of Turbo, in the wet and the dry seasons, as part of a coastline analysis to identify morphodynamic trends in the area. The results show a net shoreline accretion of up to 30 m and positive sedimentary accumulation of up to 45.8 m3/m. To the north of the study area, sediment accumulation is evident at the Turbo River Delta. The 34 coastal protection structures in the study area have a high k index (~0.7), suggesting that they are the main drivers controlling the trend of sediment accumulation. The correlation of geomorphological, oceanographic, and anthropic variables related to the presence of coastal structures, is necessary in order to set up efficient coastal protection schemes.
Kelis Hinestroza-Mena; Vladimir Toro; Gloria Londoño-Colorado; Valeria Chávez; Julieth García-Blanco; Rodolfo Silva. Fine Spatial Scale, Frequent Morphological Monitoring of Urbanised Beaches to Improve Coastal Management. Journal of Marine Science and Engineering 2021, 9, 550 .
AMA StyleKelis Hinestroza-Mena, Vladimir Toro, Gloria Londoño-Colorado, Valeria Chávez, Julieth García-Blanco, Rodolfo Silva. Fine Spatial Scale, Frequent Morphological Monitoring of Urbanised Beaches to Improve Coastal Management. Journal of Marine Science and Engineering. 2021; 9 (5):550.
Chicago/Turabian StyleKelis Hinestroza-Mena; Vladimir Toro; Gloria Londoño-Colorado; Valeria Chávez; Julieth García-Blanco; Rodolfo Silva. 2021. "Fine Spatial Scale, Frequent Morphological Monitoring of Urbanised Beaches to Improve Coastal Management." Journal of Marine Science and Engineering 9, no. 5: 550.
Green water events may present different features in the initial stage of interaction with the deck of a structure. It is therefore important to investigate the evolution of different types of green water, since not all the events interact with the deck at the same time. In this paper, the evolution of three types of green water events (dam-break, plunging-dam-break, and hammer-fist) are studied. The water surface elevations and volumes over the deck in consecutive green water events, generated by incident [wave trains in a wave flume, were analyzed using image-based methods. The results show multiple-valued water surface elevations in the early stage of plunging-dam-break and hammer-fist type events. Detailed experimental measurements of this stage are shown for the first time. The effect of wave steepness on the duration of the events, maximum freeboard exceedance, and volumes were also investigated. Although the hammer-fist type showed high freeboard exceedances, the plunging-dam-break type presented the largest volumes over the deck. Some challenges for further assessments of green water propagation are reported.
Jassiel Fontes; Irving Hernández; Edgar Mendoza; Rodolfo Silva; Eliana Brandão da Silva; Matheus Rocha de Sousa; José Gonzaga; Raíssa Kamezaki; Lizeth Torres; Paulo Esperança. On the Evolution of Different Types of Green Water Events. Water 2021, 13, 1148 .
AMA StyleJassiel Fontes, Irving Hernández, Edgar Mendoza, Rodolfo Silva, Eliana Brandão da Silva, Matheus Rocha de Sousa, José Gonzaga, Raíssa Kamezaki, Lizeth Torres, Paulo Esperança. On the Evolution of Different Types of Green Water Events. Water. 2021; 13 (9):1148.
Chicago/Turabian StyleJassiel Fontes; Irving Hernández; Edgar Mendoza; Rodolfo Silva; Eliana Brandão da Silva; Matheus Rocha de Sousa; José Gonzaga; Raíssa Kamezaki; Lizeth Torres; Paulo Esperança. 2021. "On the Evolution of Different Types of Green Water Events." Water 13, no. 9: 1148.
Sustainable energy is needed globally, and Ocean Thermal Energy Conversion (OTEC) is a possible way to diversify the energy matrix. This article suggests a preliminary selection process to find optimal sites for OTEC deployment on the Mexican coastline. The method comprises the (1) evaluation of the thermal power potential, using daily data (16 years) of sea surface temperature, and the percentage of available time of the power thresholds; (2) assessment of feasibility using a decision matrix, fed by technical, environmental and socioeconomic criteria; (3) identification of four potential sites; and (4) comparison of OTEC competitiveness with other technologies through the levelized cost of energy. Multi-criteria decision analysis was applied to select optimal sites, using the technique for ordering performance by the similarity to the ideal solution. The best sites were (1) Puerto Angel and (2) Cabo San Lucas; with power production of > 50 MW and a persistence of > 40%. As yet there is no evidence from operational OTEC plants that could alter the environmental and socioeconomic criteria weightings. More in situ studies on pilot plants should help to determine their possible environmental impact and socio-economic consequences before any larger-scale projects are implemented.
Erika Garduño-Ruiz; Rodolfo Silva; Yandy Rodríguez-Cueto; Alejandro García-Huante; Jorge Olmedo-González; M. Martínez; Astrid Wojtarowski; Raúl Martell-Dubois; Sergio Cerdeira-Estrada. Criteria for Optimal Site Selection for Ocean Thermal Energy Conversion (OTEC) Plants in Mexico. Energies 2021, 14, 2121 .
AMA StyleErika Garduño-Ruiz, Rodolfo Silva, Yandy Rodríguez-Cueto, Alejandro García-Huante, Jorge Olmedo-González, M. Martínez, Astrid Wojtarowski, Raúl Martell-Dubois, Sergio Cerdeira-Estrada. Criteria for Optimal Site Selection for Ocean Thermal Energy Conversion (OTEC) Plants in Mexico. Energies. 2021; 14 (8):2121.
Chicago/Turabian StyleErika Garduño-Ruiz; Rodolfo Silva; Yandy Rodríguez-Cueto; Alejandro García-Huante; Jorge Olmedo-González; M. Martínez; Astrid Wojtarowski; Raúl Martell-Dubois; Sergio Cerdeira-Estrada. 2021. "Criteria for Optimal Site Selection for Ocean Thermal Energy Conversion (OTEC) Plants in Mexico." Energies 14, no. 8: 2121.
Infrastructure is necessary to protect and provide the goods and services required by humans. As coastal green infrastructure (CGI) aims to respect and work with natural processes, it is a feasible response to mitigate or avoid the consequences of coastal squeeze. The concept of CGI is receiving increased attention of late due to the challenges facing us, such as climate change, population growth and the overexploitation of natural resources on the coast. Terms which may be applied to encourage the construction of infrastructure, or to minimize the responsibility for poorly made decisions, often induce misunderstanding. In this paper, the concept of CGI and its use in solving coastal problems is reordered. Four categories are proposed, according to the degree of naturalness of the project: Nature reclamation, Engineered ecosystems, Ecologically enhanced engineering, and De-engineering/Relocation. Existing coastal risk evaluation frameworks can be used to design many types of CGI. Key concepts, challenges and good practices for the holistic management of coastal squeeze are presented from the analysis of successful and unsuccessful CGI projects worldwide.
Valeria Chávez; Debora Lithgow; Miguel Losada; Rodolfo Silva-Casarin. Coastal green infrastructure to mitigate coastal squeeze. Journal of Infrastructure Preservation and Resilience 2021, 2, 1 -12.
AMA StyleValeria Chávez, Debora Lithgow, Miguel Losada, Rodolfo Silva-Casarin. Coastal green infrastructure to mitigate coastal squeeze. Journal of Infrastructure Preservation and Resilience. 2021; 2 (1):1-12.
Chicago/Turabian StyleValeria Chávez; Debora Lithgow; Miguel Losada; Rodolfo Silva-Casarin. 2021. "Coastal green infrastructure to mitigate coastal squeeze." Journal of Infrastructure Preservation and Resilience 2, no. 1: 1-12.
The interaction of oblique water waves with a land-fixed Oscillating Water Column (OWC) type wave energy converter is examined. Two-dimensional linear wave theory is used to formulate the mathematical problem. The matched eigenfunction expansion method (EEM) using dual series relations and the Boundary Element Method (BEM) with quadratic elements are utilized to solve the associated boundary value problem (BVP). The novelty of the present work lies on addressing the influence of oblique water waves on the OWC efficiency and the use of dual series relations to solve this type of BVP. Variations of the hydrodynamic efficiency with the wave angle of incidence, and with the chamber length and front barrier draft to water depth ratios are discussed. Both analytical and numerical results were found to be in good agreement. Findings revealed that by increasing the angle of incidence, a broader hydrodynamic efficiency band and a higher wave frequency at which resonance occurs are both obtained. This aspect may offer benefits to wave power extraction in real sea conditions for fixed OWC devices. Finally, cases published in the specialized literature were recovered and very good agreement was achieved.
Ayrton Alfonso Medina Rodríguez; Alejandro Martínez Flores; Jesús María Blanco Ilzarbe; Rodolfo Silva Casarín. Interaction of oblique waves with an Oscillating Water Column device. Ocean Engineering 2021, 228, 108931 .
AMA StyleAyrton Alfonso Medina Rodríguez, Alejandro Martínez Flores, Jesús María Blanco Ilzarbe, Rodolfo Silva Casarín. Interaction of oblique waves with an Oscillating Water Column device. Ocean Engineering. 2021; 228 ():108931.
Chicago/Turabian StyleAyrton Alfonso Medina Rodríguez; Alejandro Martínez Flores; Jesús María Blanco Ilzarbe; Rodolfo Silva Casarín. 2021. "Interaction of oblique waves with an Oscillating Water Column device." Ocean Engineering 228, no. : 108931.
As the operation of an ocean thermal energy conversion (OTEC) plant depends on the temperature gradient between the surface and deeper water (SST), a variation in SST can significantly modify the energy produced. The aim of this paper is to present a comparative analysis of three sea-surface temperature databases (World Ocean Atlas (WOA), Satellite Oceanic Monitoring System (SATMO), and in situ sensor measurements). Simple linear regression and graphic comparisons allow correlations to be made between the distribution patterns of the SST data. The results show that there is no statistically significant difference between the three databases. To determine general regions where OTEC implementation is possible, at the macroscale, the WOA database is recommended, as a smaller amount of data must be analyzed. For meso- and microscales, such as specific areas of the Mexican exclusive economic zone. It is better to use SATMO and in situ measurements as a higher spatial resolution is required.
Alejandro García Huante; Yandy Rodríguez Cueto; Ricardo Hernández Contreras; Erika Garduño Ruíz; Miguel Alatorre Mendieta; Rodolfo Silva. Validation of Sea-Surface Temperature Data for Potential OTEC Deployment in the Mexican Pacific. Energies 2021, 14, 1898 .
AMA StyleAlejandro García Huante, Yandy Rodríguez Cueto, Ricardo Hernández Contreras, Erika Garduño Ruíz, Miguel Alatorre Mendieta, Rodolfo Silva. Validation of Sea-Surface Temperature Data for Potential OTEC Deployment in the Mexican Pacific. Energies. 2021; 14 (7):1898.
Chicago/Turabian StyleAlejandro García Huante; Yandy Rodríguez Cueto; Ricardo Hernández Contreras; Erika Garduño Ruíz; Miguel Alatorre Mendieta; Rodolfo Silva. 2021. "Validation of Sea-Surface Temperature Data for Potential OTEC Deployment in the Mexican Pacific." Energies 14, no. 7: 1898.
The accelerated rate of environmental degradation of the Mexican Caribbean coast is alarming. In this work, spatial analysis procedures were applied to study relationships among wave and wind climates, water quality, and environmental degradation of the principal coastal ecosystems. We found an increasing North-South gradient in the preservation state of the coastal ecosystems, related to the degree of anthropization of the coastline. In the north, all analysed stressors exert high pressure on coral reefs, seagrass meadows, mangroves, and dunes, and cause chronic coastline erosion. The coastal ecosystems of the central and southern regions are more mature and healthier, and the most significant stressor is reduced water quality. The north has been most hit by high-intensity hurricanes, the frequency of which has increased in the Mexican Caribbean over recent decades. The status of conservation of the ecosystems, added to the long-term intensification of environmental pressures, particularly high-intensity hurricanes, will induce further deterioration if a coordinated management scheme is not adopted by decision-makers. To ensure effective coordinated management, plans should be made on a regional scale using shared guidelines. Spatial analysis procedures aid in prioritizing and adapting the shared guidelines depending on the identified major stressors and the preservation state of each region in the Mexican Caribbean.
Mayrene Guimarais; Adán Zúñiga-Ríos; Cesia Cruz-Ramírez; Valeria Chávez; Itxaso Odériz; Brigitta van Tussenbroek; Rodolfo Silva. The Conservational State of Coastal Ecosystems on the Mexican Caribbean Coast: Environmental Guidelines for Their Management. Sustainability 2021, 13, 2738 .
AMA StyleMayrene Guimarais, Adán Zúñiga-Ríos, Cesia Cruz-Ramírez, Valeria Chávez, Itxaso Odériz, Brigitta van Tussenbroek, Rodolfo Silva. The Conservational State of Coastal Ecosystems on the Mexican Caribbean Coast: Environmental Guidelines for Their Management. Sustainability. 2021; 13 (5):2738.
Chicago/Turabian StyleMayrene Guimarais; Adán Zúñiga-Ríos; Cesia Cruz-Ramírez; Valeria Chávez; Itxaso Odériz; Brigitta van Tussenbroek; Rodolfo Silva. 2021. "The Conservational State of Coastal Ecosystems on the Mexican Caribbean Coast: Environmental Guidelines for Their Management." Sustainability 13, no. 5: 2738.
This paper explores means of achieving more efficient and sustainable river transport in remote regions by making relatively simple, practical modifications to boats or implementing new technologies for propulsion and energy generation. The research focuses on the case of the simple boats used to transport children to school in riverine communities of the Brazilian Amazon. A range of options to improve the efficiency of existing boats is described. Under normal operational conditions, small improvements to these boats may have long-term environmental and socioeconomic benefits. Implementing changes such as those suggested, it may also be possible to boost sources of employment in these regions and elsewhere, where industrial and technological limitations are significant.
Jassiel Hernández-Fontes; Harlysson Maia; Valeria Chávez; Rodolfo Silva. Toward More Sustainable River Transportation in Remote Regions of the Amazon, Brazil. Applied Sciences 2021, 11, 2077 .
AMA StyleJassiel Hernández-Fontes, Harlysson Maia, Valeria Chávez, Rodolfo Silva. Toward More Sustainable River Transportation in Remote Regions of the Amazon, Brazil. Applied Sciences. 2021; 11 (5):2077.
Chicago/Turabian StyleJassiel Hernández-Fontes; Harlysson Maia; Valeria Chávez; Rodolfo Silva. 2021. "Toward More Sustainable River Transportation in Remote Regions of the Amazon, Brazil." Applied Sciences 11, no. 5: 2077.
Sandy coasts represent about one-third of the global coastline and are among the most valuable and most vulnerable areas for humans and many other species. Socio-economic development and climate change impacts, together with traditional engineering for shore protection, have pervasively resulted in coastal squeeze, thereby threatening coastal life and economic activities, and the very survival of coastal ecosystems. In the past, the responses to problems such as land loss, coastal erosion and flooding were primarily reactive, through gray engineering solutions, with little interest shown in the ecosystem processes impacted by coastal armoring. In recent decades, coastal management strategies have become more diverse, embracing traditional engineering solutions alongside ecosystem-based measures. Even so, many of these new strategies still fail to meet sustainability criteria. Inspired by Per Bruun’s “The Ten Demands for Coastal Protection” from 1972, this article attempts to consider these changes and knowledge acquired since the 1970s, in order to tentatively formulate “Ten Commandments” for the sustainability of sandy coasts in face of climate change and socio-economic development. As such, the paper offers a new vision and briefly summarizes good practices for the management of sandy coasts, particularly useful for those who, at whatever level of influence, could contribute to the long-term realization of this new vision.
Rodolfo Silva; Hocine Oumeraci; M. Luisa Martínez; Valeria Chávez; Debora Lithgow; Brigitta I. van Tussenbroek; Helena F. M. W. van Rijswick; Tjeerd J. Bouma. Ten Commandments for Sustainable, Safe, and W/Healthy Sandy Coasts Facing Global Change. Frontiers in Marine Science 2021, 8, 1 .
AMA StyleRodolfo Silva, Hocine Oumeraci, M. Luisa Martínez, Valeria Chávez, Debora Lithgow, Brigitta I. van Tussenbroek, Helena F. M. W. van Rijswick, Tjeerd J. Bouma. Ten Commandments for Sustainable, Safe, and W/Healthy Sandy Coasts Facing Global Change. Frontiers in Marine Science. 2021; 8 ():1.
Chicago/Turabian StyleRodolfo Silva; Hocine Oumeraci; M. Luisa Martínez; Valeria Chávez; Debora Lithgow; Brigitta I. van Tussenbroek; Helena F. M. W. van Rijswick; Tjeerd J. Bouma. 2021. "Ten Commandments for Sustainable, Safe, and W/Healthy Sandy Coasts Facing Global Change." Frontiers in Marine Science 8, no. : 1.
The coastal landscape of the south of the Baja California peninsula provides significant socio-economic benefits based on tourism. An analysis of coastal vulnerability was conducted for Cabo San Lucas, considering wave climate conditions, sediment characterization, beach profiles, and the historical occurrence of coastline changes, hurricanes, and El Niño Southern Oscillation (ENSO) events. The coastal scenery was also classified considering the landscape value of the environment from a touristic point of view, based on human and natural interactions on the landscape. Results show that the vulnerability increases close to the submarine sand falls, near intense urbanization, in resort areas, and at locations with narrow beach and dune widths. The degree of vulnerability along the coast alters abruptly, as urban and recreational sites alternate with natural sites. This coastline has seen exponential development since the 1980s, resulting in highly vulnerable areas with a low, and decreasing, touristic value, as the landscape has been changed into an urban settlement with limited natural attractions. Urban and recreational settlements threaten to cover dunes and reservoirs of natural sediments, increasingly affecting vulnerability in the area as well as the landscape values of many parts of the coast, including the submarine sand falls.
Juan Carlos Alcérreca-Huerta; Jorge R. Montiel-Hernández; Mariana E. Callejas-Jiménez; Dulce A. Hernández-Avilés; Giorgio Anfuso; Rodolfo Silva. Vulnerability of Subaerial and Submarine Landscapes: The Sand Falls in Cabo San Lucas, Mexico. Land 2020, 10, 27 .
AMA StyleJuan Carlos Alcérreca-Huerta, Jorge R. Montiel-Hernández, Mariana E. Callejas-Jiménez, Dulce A. Hernández-Avilés, Giorgio Anfuso, Rodolfo Silva. Vulnerability of Subaerial and Submarine Landscapes: The Sand Falls in Cabo San Lucas, Mexico. Land. 2020; 10 (1):27.
Chicago/Turabian StyleJuan Carlos Alcérreca-Huerta; Jorge R. Montiel-Hernández; Mariana E. Callejas-Jiménez; Dulce A. Hernández-Avilés; Giorgio Anfuso; Rodolfo Silva. 2020. "Vulnerability of Subaerial and Submarine Landscapes: The Sand Falls in Cabo San Lucas, Mexico." Land 10, no. 1: 27.
The coastal zone is in a critical state worldwide, due to the loss and fragmentation of its ecosystems. Much of this is caused by long-term anthropic local, regional, or global actions, which drive coastal squeeze processes. Most of the criteria to evaluate the effects of coastal squeeze are focused on merely identifying its effect on the coastal zone. Here, we propose a framework to manage (identify, analyze, quantify, and tackle) the effect of coastal squeeze. This DESCR framework examines the relations between Drivers, Exchanges, and States of the environment to subsequently evaluate the chronic, negative Consequences and determine possible Responses. To illustrate the application of the DESCR framework, the coastal zone of Puerto Morelos, in the Mexican Caribbean, was studied using this approach. We analyzed the systemic interactions among the coastal ecosystems in this area, such as coral reefs, seagrass beds, beach, coastal dunes, and mangroves, which have been altered over the last decades, resulting in a severe coastal squeeze. Recommended responses include urgent measures for ecosystem management to mitigate the coastal squeeze.
Rodolfo Silva; María Martínez; Brigitta Van Tussenbroek; Laura Guzmán-Rodríguez; Edgar Mendoza; Jorge López-Portillo. A Framework to Manage Coastal Squeeze. Sustainability 2020, 12, 10610 .
AMA StyleRodolfo Silva, María Martínez, Brigitta Van Tussenbroek, Laura Guzmán-Rodríguez, Edgar Mendoza, Jorge López-Portillo. A Framework to Manage Coastal Squeeze. Sustainability. 2020; 12 (24):10610.
Chicago/Turabian StyleRodolfo Silva; María Martínez; Brigitta Van Tussenbroek; Laura Guzmán-Rodríguez; Edgar Mendoza; Jorge López-Portillo. 2020. "A Framework to Manage Coastal Squeeze." Sustainability 12, no. 24: 10610.
This paper gives a detailed description of the main hydrodynamic characteristics of different types of green water events occurring on a fixed structure in a series of experiments. High-speed video, at 250 fps, was used to capture the flow details from regular waves produced inside a wave flume. The green water events were classified according to their type and the results of the evaluation from the apparent and effective interaction features. The air cavities in the plunging-dam-break (PDB)-type events were almost spherical for longer waves. PDB with large, elliptical cavities, and hammer-fist (HF)-type events occurred with steeper waves. The highest wave front and bow run-up velocities were found in PDB and HF events, respectively. The size of the cavities in PDB events increases and becomes more elliptical for higher bow run-up velocities. The results of these experiments show that not all events can be treated in the same way as the dam-break (DB)-type events when designing structures or implementing models, as not all interactions with the deck happen when the shipping water crosses the bow edge.
Jassiel Vladimir Hernández-Fontes; Edgar Mendoza; Irving D. Hernández; Rodolfo Silva. A Detailed Description of Flow-Deck Interaction in Consecutive Green Water Events. Journal of Offshore Mechanics and Arctic Engineering 2020, 143, 1 -17.
AMA StyleJassiel Vladimir Hernández-Fontes, Edgar Mendoza, Irving D. Hernández, Rodolfo Silva. A Detailed Description of Flow-Deck Interaction in Consecutive Green Water Events. Journal of Offshore Mechanics and Arctic Engineering. 2020; 143 (4):1-17.
Chicago/Turabian StyleJassiel Vladimir Hernández-Fontes; Edgar Mendoza; Irving D. Hernández; Rodolfo Silva. 2020. "A Detailed Description of Flow-Deck Interaction in Consecutive Green Water Events." Journal of Offshore Mechanics and Arctic Engineering 143, no. 4: 1-17.