Carbonate system in the water masses of the Southeast Atlantic sector of the Southern Ocean during February and March 2008

[EN]Carbonate system variables were measured in the South Atlantic sector of the Southern Ocean along a transect from South Africa to the southern limit of the Antarctic Circumpolar Current (ACC) from February to March 2008. Eddies detached from the retroflection of the Agulhas Current increased the gradients observed along the fronts. Minima in the fugacity of CO2, fCO2, and maxima in pH on either side of the frontal zone were observed, noting that within the frontal zone fCO2 reached maximum values and pH was at a minimum.Vertical distributions of water masses were described by their carbonate system properties and their relationship to CFC concentrations. Upper Circumpolar Deep Water (UCDW) and Lower Circumpolar Deep Water (LCDW) offered pHT,25 values of 7.56 and 7.61, respectively. The UCDW also had higher concentrations of CFC-12 (>0.2 pmol kg?1) as compared to deeper waters, revealing that UCDW was mixed with recently ventilated waters. Calcite and aragonite saturation states ( ) were also affected by the presence of these two water masses with high carbonate concentrations. The aragonite saturation horizon was observed at 1000m in the subtropical area and north of the Subantarctic Front. At the position of the Polar Front, and under the influence of UCDW and LCDW, the aragonite saturation horizon deepened from 800m to 1500m at 50.37_ S, and reached 700m south of 57.5_ S. High latitudes proved to be the most sensitive areas to predicted anthropogenic carbon increase. Buffer coefficients related to changes in [CO2], [H+] and with changes in dissolved inorganic carbon (CT)and total alkalinity (AT) offered minima values in the Antarctic IntermediateWater and UCDWlayers. These coefficients suggest that a small increase in CT will sharply decrease the status of pH and carbonate saturation. Here we present data that suggest that south of 55_ S, surface water will be under-saturated with respect to aragonite within the next few decades.

Declaraciones

Trabajo realizado para el Curso en el Campus Virtual sobre Acceso Abierto y Derechos de Autor, 2014-15

Recursos didácticos y estrategias TIC en el ámbito de la docencia del Derecho

[EN]In this paper we analyze the use of tablets in the classroom and the new key technologies based on mobile learning; describing their potential in the academic activities. We start always to identify and describe the key trends in educational technology in the field of teaching and learning and as always start from the last NMC Horizon Report 2014. So we will see how our university experience in the field of law, we used the methodological synergy and integration of the flipped classroom, apps design and even the gamification as new teaching tools of the digital ecosystem.

Competencias digitales docentes para el desarrollo de la intercreatividad de las redes y flipped classroom con tecnologías móviles

[ES]A pesar del crecimiento constante y el asentamiento del e-learning como alternativa a algunas formas de educación presencial, existen aún áreas de investigación que pueden suponer avances importantes, según el informe horizon de 2015, entre ellas destacamos el BYOD y la Flipped clasroom la cual la hemos implementado a través del uso de las redes sociales y otros elementos del ecosistema digital, entre los que destacamos el protagonismo de las tecnologías móviles. En nuestro trabajo analizamos la combinación de estrategias y de metodologías activas e inductivas que permiten el desarrollo de habilidades y competencias digitales en donde las redes mediadas en entornos de ubicuidad, pueden convertirse en parte de la transformación educativa, ya que suponen un espacio colaborativo además de poder optimizar la dinámica de clase en la universidad.