A low cost, automated, remote monitoring video system built on standard commercial off‐the‐shelf (COTS) components and implemented with open source software is presented. The system has been implemented in a coastal area to perform image... more
A low cost, automated, remote monitoring video system built on standard commercial off‐the‐shelf (COTS) components and implemented with open source software is presented. The system has been implemented in a coastal area to perform image acquisition and processing, generating statistical products and transferring the information from the field to a central node where post‐processing and data visualization are made available to the general public. The open structure of the software allows the user to implement new routines and modules appropriate to fit specific needs as well as to adapt the system to study other dynamical processes where continuous observation is required. The software and image data base can be obtained as freeware. Copyright © 2010 John Wiley & Sons, Ltd.
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Capitulo publicado en: Montoya Montes, Isabel; Rodriguez Santalla, Inmaculada; Sanchez Garcia, Maria Jose (eds.). Avances recientes en geomorfologia litoral: actas de las VI Jornadas de Geomorfologia Litoral, celebradas del 7 al 9 de... more
Capitulo publicado en: Montoya Montes, Isabel; Rodriguez Santalla, Inmaculada; Sanchez Garcia, Maria Jose (eds.). Avances recientes en geomorfologia litoral: actas de las VI Jornadas de Geomorfologia Litoral, celebradas del 7 al 9 de septiembre de 2011 en Tarragona. [S.l.]: Universidad Rey Juan Carlos, 2011
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Trabajo presentado en los MyOcean Science Days, celebrados en Toulouse, Francia, del 22 al 24 de septiembre de 2014
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Trabajo presentado en la International Conference on Coastal Engineering, celebrado en Estambul, Turquia, del 17 al 22 de julio de 2016
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Trabajo presentado en el International Coastal Symposium, celebrado en Sydney (Australia), del 6 al 11 de marzo de 2016
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Trabajo presentado en la International Conference on Marine Data and Information Systems, celebrado en Lucca, Italia, del 23 al 25 de septiembre de 2013
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Trabajo presentado en EOF2014, III Encuentro de la Oceanografia Fisica Espanola, celebrada del 11 al 13 de junio de 2014 en Las Palmas de Gran Canaria (Espana)
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Peer Reviewe
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Posidonia oceanica (Linnaeus) Delile 1813, es una fanerogama marina endemica del Mediterraneo que coloniza los fondos arenosos y rocosos costeros formando importantes praderas. Desde finales de verano hasta mediados de otono P. oceanica... more
Posidonia oceanica (Linnaeus) Delile 1813, es una fanerogama marina endemica del Mediterraneo que coloniza los fondos arenosos y rocosos costeros formando importantes praderas. Desde finales de verano hasta mediados de otono P. oceanica pierde sus hojas que permanecen en la propia pradera hasta que son transportadas fuera de ella por los efectos de los temporales, principalmente hacia aguas profundas y en menor volumen hacia la costa. Los restos de necromasa que alcanzan la costa pueden formar importantes acumulaciones, de hasta 2,5 m de potencia y varios metros de ancho. Existe una extensa bibliografia sobre el papel de las bermas vegetales en la proteccion y en la gestion costera. El presente trabajo persigue la implementacion de un protocolo de cartografia automatica de bermas vegetales de P. oceanica a partir del tratamiento digital de imagenes de videomonitorizacion costera. Para ello se ha desarrollado un algoritmo que persigue obtener un mapa diario de ausencia-presencia de bermas a lo largo de la linea de costa. El algoritmo se estructura en seis pasos, que cubren desde la seleccion de imagenes, la regionalizacion del area de interes y la eliminacion de artefactos ( p.e. sombra torres socorristas, farolas, etc.), la combinacion de diferentes canales (RGB, HSV) para la identificacion de los pixeles en la region de interes con acumulos de hojarasca, asi como un filtro temporal para evitar falsas ausencias o presencias y el correspondiente proceso de georreferenciacion de las imagenes. El producto final es un mapa de probabilidad de presencia de bermas vegetales de P. oceanica a lo largo de la linea de costa de Cala Millor (NE Mallorca) para el periodo comprendido entre mayo 2011 – junio 2016. A partir de dicho producto se abre la posibilidad de evaluar el papel efectivo de proteccion de las bermas vegetales, asi como de los controles que condicionan su acumulacion y presencia a lo largo de la linea de costa.
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Systematic and sustained high quality measurements of nearshore waves and beach morphology are crucial to understand morphodynamic processes that determine beach evolution, to unravel the effects of global warming on sandy coasts and thus... more
Systematic and sustained high quality measurements of nearshore waves and beach morphology are crucial to understand morphodynamic processes that determine beach evolution, to unravel the effects of global warming on sandy coasts and thus improve forecasting models. In 2011 a comprehensive beach monitoring program, the first in the Mediterranean Sea, started at Cala Millor Beach on the island of Mallorca (Spain). The aim was to provide long-term datasets of near-shore morphodynamics in a carbonate sandy micro-tidal and semi-embayed beach fronted by a Posidonia oceanica seagrass meadow. We present our morphological and hydrodynamical dataset of Cala Millor covering more than a decade. The dataset includes topobathymetries, shoreline positions obtained from video cameras, meteorological parameters from a weather station, currents, as well as waves and sea level from ADCP measurements and sediment size. This free and unrestricted archived dataset can be used to support the modelling of...
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espanolLa costa de Menorca acoge 114 sistemas de playa que representan el 9,9% de la linea de costa de Menorca. Ubicadas en un ambiente micromareal y expuestas a oleajes que raras veces superan los 3m de altura significante, la mayoria de... more
espanolLa costa de Menorca acoge 114 sistemas de playa que representan el 9,9% de la linea de costa de Menorca. Ubicadas en un ambiente micromareal y expuestas a oleajes que raras veces superan los 3m de altura significante, la mayoria de las playas menorquinas se caracterizan por presentar arenas biogenicas de medias a gruesas, estando su distribucion y naturaleza condicionadas, principalmente, por el contexto morfoestructural de la isla. Tanto en lo tocante a la configuracion fisiografica de las playas y su espacio de acomodacion como a la naturaleza y tipologia del sedimento. En general, la tasa de evolucion media de las playas de Menorca no presenta grandes problemas y se caracteriza por la estabilidad, una estabilidad reforzada por el caracter protegido o semi-protegido de las ensenadas que acogen a las playas o porque las playas mas expuestas coinciden las acumulaciones de cantos y bloques al pie de acantilados. EnglishThe Menorcan coast contains 114 beach systems, which occup...
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Copernicus, previously known as GMES (Global Monitoring for Environment and Security), is the European Programme for the establishment of a European capacity for Earth Observation and Monitoring. Copernicus aims to provide a sustainable... more
Copernicus, previously known as GMES (Global Monitoring for Environment and Security), is the European Programme for the establishment of a European capacity for Earth Observation and Monitoring. Copernicus aims to provide a sustainable service for Ocean Monitoring and Forecasting validated and commissioned by users. From May 2015, the Copernicus Marine Environment Monitoring Service (CMEMS) is working on an operational mode through a contract with services engagement (result is regular data provision).
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In the framework of the EC funded project, PERSEUS (Subtask 3.3.1: Repeated glider sections in key channels and sub-basin) and with the support of JERICO TNA (EU-FP7), a deep water glider (up to 1000m) was deployed from the R/V Tethys in... more
In the framework of the EC funded project, PERSEUS (Subtask 3.3.1: Repeated glider sections in key channels and sub-basin) and with the support of JERICO TNA (EU-FP7), a deep water glider (up to 1000m) was deployed from the R/V Tethys in the Sardinia Channel and has carried out 3 return trips during the period from the 16th of August 2014 to the 19th of September 2014. The Gilder was programmed to follow a path close to SARAL satellite track #887. In this paper, after an overview of the hydrological properties of the water masses in the area highlighted by the glider data, we are focusing on a joint analysis of in-situ and satellite data to understand the behavior of a cyclonic eddy observed in the area.
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The aim of this experiment was to assess the operational HF radar surface current velocities in the Ibiza Channel in a Lagrangian framework, by comparing against surface drifter derived velocities"
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Understanding and sustainably managing complex environments such as marine ecosystems benefits from an integrated approach to ensure that information about all relevant components and their interactions at multiple and nested... more
Understanding and sustainably managing complex environments such as marine ecosystems benefits from an integrated approach to ensure that information about all relevant components and their interactions at multiple and nested spatiotemporal scales are considered. This information is based on a wide range of ocean observations using different systems and approaches. An integrated approach thus requires effective collaboration between areas of expertise in order to improve coordination at each step of the ocean observing value chain, from the design and deployment of multi-platform observations to their analysis and the delivery of products, sometimes through data assimilation in numerical models. Despite significant advances over the last two decades in more cooperation across the ocean observing activities, this integrated approach has not yet been fully realized. The ocean observing system still suffers from organizational silos due to independent and often disconnected initiatives...
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Día Mundial de los Océanos
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Coastal sciences suer from a lack of information with appropriate temporal and spatial resolution. This information is needed to monitor and study the wide range of processes occurring in coastal areas and subsequently take informed... more
Coastal sciences suer from a lack of information with appropriate temporal and spatial resolution. This information is needed to monitor and study the wide range of processes occurring in coastal areas and subsequently take informed decisions concerning their management. For many years scientists have used laboratory experiments or field campaigns to obtain punctual information. However, the numerous variables and processes that influence coastal areas are practically impossible to observe and measure in this way. SIRENA is an open source software developed to help filling this information gap. It was conceived with the objective of video monitoring coastal areas and obtaining quantitative and qualitative information from it. It manages a group of CCD cameras, processes the images, delivers a set of statistical products (snapshot, mean, variance, and timestack image), and sends them to a remote station through the internet. The open structure of the software allows the user to modif...
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The Balearic Islands coast contains 867 beach systems covering 10% of the coast reflecting the different controls of waves, sediments, geological inheritance and human disturbance. The average length of theses beaches are 169 m, raging... more
The Balearic Islands coast contains 867 beach systems covering 10% of the coast reflecting the different controls of waves, sediments, geological inheritance and human disturbance. The average length of theses beaches are 169 m, raging from 10 m to more than 5 km, which implies that physical boundaries play a major role in beach length and morphology and wave attenuation; a moderate and seasonal wave climate and sediments composed predominantly of medium to coarse marine biogenic carbonate sands. It also describes the regional distribution, together with the occurrence of wave energy, beach sediments, bar systems and dynamics, rip currents, human disturbance and the influence of geological inheritance and marine biota.
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<p>High Frequency Radars (HFR) are a mature remote sensing technology which is widely used in ocean observing systems to monitor surface currents in coastal areas.... more
<p>High Frequency Radars (HFR) are a mature remote sensing technology which is widely used in ocean observing systems to monitor surface currents in coastal areas.  HFR systems are composed of 2 or more antennas which measure water motion speed along certain bearings, providing radial observations, which are later on postprocessed and mapped to generate orthogonal currents observations (u, v), herein named Totals.</p><p>Both Radial and Total observations have been used to correct surface currents through data assimilation in numerous works in the past years, but, in our opinion, there is a lack of studies comparing the performance of both types of data. Here we present a series of experiments evaluating the capabilities of HFR to correct surface currents in the Ibiza Channel using data assimilation. We put special interest in assessing the potentialities of whether using radial or total observations and also their capabilities in a real operational context.</p><p>A Lagrangian assessment using a set of 14 surface drifters deployed in the area allows to evaluate the performance of both kinds of observations, showing how the separation distance between drifting buoys and virtual particles is reduced in both cases.</p>