Search results for " beach"
showing 8 items of 28 documents
Assessment of Coastal Vulnerability in South Sicily
2006
Ultraviolet radiation protection by a beach umbrella.
2010
A beach umbrella intercepts all direct UV irradiance, but only part of the diffuse component. Using a simple sky view factor model, we have determined the fraction of the hemispheric diffuse irradiance that is not intercepted by the umbrella. Assuming a sensor at the surface and close to the center of the umbrella, isotropic diffuse irradiance and for an umbrella of 80 cm radius and 100 cm high, our results show that approximately 34% of the incident horizontal irradiance is not intercepted by the umbrella. These results agree with irradiance measurements conducted with and without the umbrella. The model is next extended to examine receipt of UV radiation by a human figure in a vertical po…
Morphodinamic evolution: assessment of the shoreline position
2010
Tourist consumption behaviour in a sun and beach Mediterranean mature destination and its implications for local development
2015
El comercio de buena parte de los destinos maduros de sol y playa, a lo largo de la orilla norte del mar Mediterráneo, ha tenido que afrontar varios años de rendimientos decrecientes a causa de la crisis económica que han sufrido los principales mercados de origen (nacional e internacional), y a la competencia de nuevas formas y destinos turísticos. En la mayoría de los casos, se trata de núcleos urbanos con un comercio estacional de proximidad que solo se activa durante la breve temporada alta. El resto del comercio urbano apenas se beneficia del consumo de un turismo que permanece recluido en el espacio de playa. En este trabajo se presentan los resultados de un análisis empírico de los h…
Beach ridges from the Varanger Peninsula (Arctic Norwegian coast): Characteristics and significance
2009
The most common coastal sedimentary forms on the arctic coast of the Varanger Peninsula are raised beach ridge plains. The majority of the ridges consist of coarse material, but there are also sandy beach ridge areas close to the river mouths of some of the major rivers. Some bays having the same isostatic rebound and dynamic conditions have been studied to test if the number of beach ridges in each locality is significant to prove climatic changes, storminess, and rates of sediment accumulation, or if the number of beach ridges in each bay is only dependent on their intrinsic characteristics and self organization. Because the number of ridges varies not only from bay to bay, but even withi…
Analysis of the Rockfall Phenomena Contributing to the Evolution of a Pocket Beach Area Using Traditional and Remotely Acquired Data (Lo Zingaro Natu…
2023
The coastal domain of central western Sicily is characterized by the presence of rocky coasts, which mainly consist of pocket beaches situated between bedrock headlands that constitute ecological niches of great touristic and economic value. In this peculiar morphodynamic system, the sedimentary contributions are mainly derived from the rockfall that affects the back of nearby cliffs or the sediment supply of small streams that flow into it. In this study, we investigated the geomorphological processes and related landforms that contribute to the evolution of a pocket beach area located in a coastal sector of NW Sicily Island. The cliffs in this are affected by several rockfalls, and deposi…
Molecular systematics and spatial genetic structure of Phaleria bimaculata (Coleoptera: Tenebrionidae) populations from central Mediterranean sandy b…
2013
Sandy beaches
Uncertainties in shoreline position analysis: the role of run-up and tide in a gentle slope beach
2017
Abstract. In the last decades in the Mediterranean sea, high anthropic pressure from increasing economic and touristic development has affected several coastal areas. Today the erosion phenomena threaten human activities and existing structures, and interdisciplinary studies are needed to better understand actual coastal dynamics. Beach evolution analysis can be conducted using GIS methodologies, such as the well-known Digital Shoreline Analysis System (DSAS), in which error assessment based on shoreline positioning plays a significant role. In this study, we propose a new approach to estimate the positioning errors due to tide and wave run-up influence. To improve the assessment of the wav…