Numerical and remote techniques for operational beach management under storm group forcing

The morphodynamic response of a microtidal beach under a storm group is analyzed, and the effects of each individual event are inferred from a numerical model, in situ measurements and video imaging. The combination of these approaches represents a multiplatform tool for beach management, especially during adverse conditions. Here, the morphodynamic response is examined during a period with a group of three storms. The first storm, with moderate conditions (Hs ∼ 1 m during 6&thinsp;h), eroded the aerial beach and generated a submerged sandbar in the breaking zone. The bar was further directed offshore during the more energetic second event (Hs = 3.5 m and 53&thinsp;h). The third storm, similar to the first one, hardly affected the beach morphology, which stresses the importance of the beach configuration previous to a storm. The volume of sand mobilized during the storm group is around 17.65 m3 m−1. During the following months, which are characterized by mild wave conditions, the aerial beach recovered half of the volume of sand that is transported offshore during the storm group ( ∼ 9.27 m3 m−1). The analysis of beach evolution shows two different characteristic timescales for the erosion and recovery processes associated with the storm and mild conditions, respectively. In addition, the response depends largely on the previous beach morphological state. The work also stresses the importance of using different tools (video monitoring, modeling, and field campaign) to analyze beach morphodynamics.</p

Las playas de Menorca: naturaleza y distribución

La costa de Menorca acoge 114 sistemas de playa que representan el 9,9% de la línea de costa de Menorca. Ubicadas en un ambiente micromareal y expuestas a oleajes que raras veces superan los 3m de altura significante, la mayoría de las playas menorquinas se caracterizan por presentar arenas biogénicas de medias a gruesas, estando su distribución y naturaleza condicionadas, principalmente, por el contexto morfoestructural de la isla. Tanto en lo tocante a la configuración fisiográfica de las playas y su espacio de acomodación como a la naturaleza y tipología del sedimento. En general, la tasa de evolución media de las playas de Menorca no presenta grandes problemas y se caracteriza por la estabilidad, una estabilidad reforzada por el carácter protegido o semi-protegido de las ensenadas que acogen a las playas o porque las playas más expuestas coinciden las acumulaciones de cantos y bloques al pie de acantiladosThe Menorcan coast contains 114 beach systems, which occupy 9,9% of the coastline. Menorcan beaches are characterized by a microtidal and a moderate wave energy environment where, at annual scale, in few occasions significant wave heights attend values larger than 3m. Biogenic medium to coarse sands beaches are the dominant feature, although the island morphostructure controls both: the type of beach and the sediment nature and/or texture. In average, the shoreline change rate for the island beaches shows a stability scenario reinforced by the large number of embayed and pocket beaches along the Menorcan coast. The beaches exposed to the most energetic waves tend show cobble-boulder beaches at the cliff-toeVersión del edito

Las playas de Menorca: naturaleza y distribución

La costa de Menorca acoge 114 sistemas de playa que representan el 9,9% de la línea de costa de Menorca. Ubicadas en un ambiente micromareal y expuestas a oleajes que raras veces superan los 3m de altura significante, la mayoría de las playas menorquinas se caracterizan por presentar arenas biogénicas de medias a gruesas, estando su distribución y naturaleza condicionadas, principalmente, por el contexto morfoestructural de la isla. Tanto en lo tocante a la configuración fisiográfica de las playas y su espacio de acomodación como a la naturaleza y tipología del sedimento. En general, la tasa de evolución media de las playas de Menorca no presenta grandes problemas y se caracteriza por la estabilidad, una estabilidad reforzada por el carácter protegido o semi-protegido de las ensenadas que acogen a las playas o porque las playas más expuestas coinciden las acumulaciones de cantos y bloques al pie de acantiladosThe Menorcan coast contains 114 beach systems, which occupy 9,9% of the coastline. Menorcan beaches are characterized by a microtidal and a moderate wave energy environment where, at annual scale, in few occasions significant wave heights attend values larger than 3m. Biogenic medium to coarse sands beaches are the dominant feature, although the island morphostructure controls both: the type of beach and the sediment nature and/or texture. In average, the shoreline change rate for the island beaches shows a stability scenario reinforced by the large number of embayed and pocket beaches along the Menorcan coast. The beaches exposed to the most energetic waves tend show cobble-boulder beaches at the cliff-toeVersión del edito

Impact of mediterranean diet promotion on environmental sustainability: a longitudinal analysis

[EN]This article aims to estimate the differences in environmental impact (greenhouse gas [GHG] emissions, land use, energy used, acidification and potential eutrophication) after one year of promoting a Mediterranean diet (MD). Methods Baseline and 1-year follow-up data from 5800 participants in the PREDIMED-Plus study were used. Each participant's food intake was estimated using validated semi-quantitative food frequency questionnaires, and the adherence to MD using the Dietary Score. The influence of diet on environmental impact was assessed through the EAT-Lancet Commission tables. The influence of diet on environmental impact was assessed through the EAT-Lancet Commission tables. The association between MD adherence and its environmental impact was calculated using adjusted multivariate linear regression models.SIPublicación en abierto financiada por el Consorcio de Bibliotecas Universitarias de Castilla y León (BUCLE), con cargo al Programa Operativo 2014ES16RFOP009 FEDER 2014-2020 DE CASTILLA Y LEÓN, Actuación:20007-CL - Apoyo Consorcio BUCL