3 resultados para digital terrain analysis

em Universidad de Alicante


Relevância:

90.00% 90.00%

Publicador:

Resumo:

Different types of land use are usually present in the areas adjacent to many shallow karst cavities. Over time, the increasing amount of potentially harmful matter and energy, of mainly anthropic origin or influence, that reaches the interior of a shallow karst cavity can modify the hypogeal ecosystem and increase the risk of damage to the Palaeolithic rock art often preserved within the cavity. This study proposes a new Protected Area status based on the geological processes that control these matter and energy fluxes into the Altamira cave karst system. Analysis of the geological characteristics of the shallow karst system shows that direct and lateral infiltration, internal water circulation, ventilation, gas exchange and transmission of vibrations are the processes that control these matter and energy fluxes into the cave. This study applies a comprehensive methodological approach based on Geographic Information Systems (GIS) to establish the area of influence of each transfer process. The stratigraphic and structural characteristics of the interior of the cave were determined using 3D Laser Scanning topography combined with classical field work, data gathering, cartography and a porosity–permeability analysis of host rock samples. As a result, it was possible to determine the hydrogeological behavior of the cave. In addition, by mapping and modeling the surface parameters it was possible to identify the main features restricting hydrological behavior and hence direct and lateral infiltration into the cave. These surface parameters included the shape of the drainage network and a geomorphological and structural characterization via digital terrain models. Geological and geomorphological maps and models integrated into the GIS environment defined the areas involved in gas exchange and ventilation processes. Likewise, areas that could potentially transmit vibrations directly into the cave were identified. This study shows that it is possible to define a Protected Area by quantifying the area of influence related to each transfer process. The combined maximum area of influence of all the processes will result in the new Protected Area. This area will thus encompass all the processes that account for most of the matter and energy carried into the cave and will fulfill the criteria used to define the Protected Area. This methodology is based on the spatial quantification of processes and entities of geological origin and can therefore be applied to any shallow karst system that requires protection.

Relevância:

90.00% 90.00%

Publicador:

Resumo:

En los últimos años es evidente el éxito creciente de la gastronomía, no sólo como mercado económico sino también desde una perspectiva comunicativa. Entendida como una Industria Creativa, la gastronomía está adquiriendo cada vez más peso en el mercado de la comunicación y se están desarrollando planes estratégicos que acercan progresivamente el sector gastronómico a todos los públicos, democratizando el arte de la cocina y haciendo de éste un talento accesible y disponible para todos los públicos. En pleno contexto de crecimiento, las estrategias y recursos comunicativos que utilizan tanto los mass media como los propios restaurantes y profesionales de la cocina, se han de convertir en objeto de estudio necesario para entender, por ejemplo, de qué manera se explotan los recursos comunicacionales y cuál es el alcance de los mismos así como sus oportunidades. El presente artículo se centra en un análisis de contenido de las páginas webs y las redes sociales utilizadas por los ocho restaurantes españoles galardonados con tres estrellas por la Guía Michelin España-Portugal (2014), sometidos a estudio en la misma semana (del 15 al 21 de septiembre). El objetivo principal es tratar de conocer estrategia de comunicación online llevada a cabo por estos restaurantes y establecer la importancia que se les atribuye a los recursos web a la hora de contribuir tanto a la consolidación de sus propias marcas como a la propia Industria Creativa gastronómica. Los resultados muestran cierta disparidad en el uso tanto de los recursos web como de los social media y avanzan que el sector gastronómico y de la restauración española tiene un reto: seguir comunicando implicándose en mayor medida con la bidireccionalidad e invitación a la participación de sus públicos, con el objetivo de captar nuevos contactos, fidelizar a los clientes actuales y convertir a todos ellos en prescriptores de sus servicios.

Relevância:

80.00% 80.00%

Publicador:

Resumo:

San Roque church (Campeche, Mexico) was built at the end of the 17th century with a micritic limestone and lime mortar in baroque style. In 2005 the church exhibited heavy biodeterioration associated with the development of extensive dark green phototrophic-based biofilms. Several cyanobacteria belonging to the order Chroococcales and lichenized fungi (Toninia nordlandica, Lobaria quercizans, Lecanora subcarnea, Cystocoleus ebeneus) were predominant in the dark biofilm samples, as revealed by DNA-based molecular techniques. In 2009, a cleaning and restoration intervention was adopted; however, after few months, microbial recolonization started to be noticeable on the painted church walls, representing an early phototrophic-based recolonization. According to molecular analysis, scanning electron microscopy observations and digital image analysis of cross sections, new phototrophic-based colonization, composed of cyanobacteria and bryophytes, developed mainly beneath the restored mortars. The intrinsic properties of the mortars, the tropical climate of Campeche and the absence of a biocide treatment in the restoration protocol influenced the recolonization of the church façades and enhanced the overall rate of deterioration in a short-term period.