Marina Bolado-Penagos

Universidad de Cádiz | UCA · Department of Applied Physics

Las ondas internas se observan frecuentemente en océanos y lagos con alta estratificación y son cruciales para la distribución de propiedades marinas, como nutrientes. Este estudio analiza la presencia de solitones en el estrecho de Gibraltar y el mar de Alborán, generados en el umbral de Camarinal. Se emplean datos in situ, corriente superficial d...

The study presents a dynamic analysis of the present day behavior of saline intrusion in the Guadalquivir estuary and evaluates the impact of anthropogenic pressures on the dynamics of the salt wedge. A one-dimensional (1D) hydrodynamic model with a transport and dispersion module is used to study the effects of human pressure involved in the salin...

The Canary/Iberia region (CIR), part of the Canary Current Upwelling System, is well-known for its coastal productivity and crucial role in enriching the oligotrophic open ocean through the offshore transport of the upwelled coastal waters. Given its significant ecological and socio-economic importance, it is essential to assess the impact of clima...

This study presents an analysis of the impacts of the changes in bottom depth along the Guadalquivir Estuary on tidal dynamics. A realistic non-linear 1D numerical model, incorporating changes in both breadth and bottom depth, was employed to investigate the involved effects. The findings reveal a significant amplification of the M2 tidal wave towa...

Internal waves are commonly observed in oceans and lakes where high stratification exists. In the present study in the Strait of Gibraltar, we analyse internal soliton signals recorded in different locations in their eastward propagation from their release point (Camarinal Sill) to the continental slope of the northwestern Alboran Sea. Moreover, th...

This study was conducted to address the changes in the surface distribution of trace metals (cobalt, copper, iron, cadmium, nickel, zinc, lead and molybdenum) as they are advected from the Gulf of Cadiz to the Alboran Sea, through the Strait of Gibraltar (south Iberian Peninsula), regions of great ecosystemic importance. Trace metals concentrations...

The temporal evolution of the physical and biogeochemical properties of the Atlantic Jet (AJ) along the first ∼ 75 m of the water column during a 4-day journey was analysed by following the trajectory of a drifter dragged by the jet from the Strait of Gibraltar towards the Alborán Sea. Three stages were differentiated based on the evolution of seve...

A catchment model for river basins and a hydrodynamic model were combined in order to simulate the spreading of the turbidity plume produced by sediment discharges from the Guadalquivir River basin within the Gulf of Cádiz under different meteorological conditions. The current fields provided by the hydrodynamic model and a transport-diffusion sche...

The main objective of the present study is to gain insight into the response of the Atlantic Jet (AJ) to the atmospheric forcing, in order to understand the hydrodynamic processes behind its disconnection from the Western Alboran Gyre (WAG) and the eastward displacement of the latter. An analysis was carried out based on observations of high freque...

An analysis is presented of the submesoscale tidally-induced anticyclonic eddies formed at the eastern mouth of the Strait of Gibraltar and their role in explaining mesoscale features of the Atlantic Jet – Western Alboran Gyre (AJ-WAG) system. These eddies have been identified for the first time using an observational approach based on the analysis...

Polyunsaturated aldehydes (PUAs) are bioactive molecules suggested as chemical defenses and infochemicals. In marine coastal habitats, diatoms reach high PUA production levels during bloom episodes. Two fractions of PUA can usually be analyzed: pPUA obtained via artificial breakage of collected phytoplankton cells and dissolved PUA already released...

Faculty of Marine and Environmental Sciences of the University of Cádiz implemented the Bologna Process in the academic year 2009/2010. Since its implementation the subject Geophysics and Tectonics started to be taught together; otherwise theory and practical lessons are explained independently. Besides, it is imparted at different levels of educat...

High Amplitude Internal Waves (HAIWs) are physical processes observed in the Strait of Gibraltar (the narrow channel between the Atlantic Ocean and the Mediterranean Sea). These internal waves are generated over the Camarinal Sill (western side of the strait) during the tidal outflow (toward the Atlantic Ocean) when critical hydraulic conditions ar...

Cape Trafalgar has been highlighted as a hotspot of high chlorophyll concentrations, as well as a source of biomass for the Alborán Sea. It is located in an unique geographical framework between the Gulf of Cádiz (GoC), which is dominated by long-term seasonal variability, and the Strait of Gibraltar, which is mainly governed by short-term tidal va...

The Strait of Gibraltar is the only connection between Atlantic and Mediterranean waters, where an inverse estuarine circulation is formed. Atlantic water flows above denser Mediterranean layer in order to compensate due to evaporation in the Mediterranean Sea. Mediterranean outflow is controlled on the Atlantic side by a topographic constriction,...

Results from a fixed station carried out in the frame of the MEGAN project.