Multi-parameter observations from coastal waters to the deepest trenche: challenges studying the carbón system with optode technology

[EN]This presentation will give examples on how multi-parameter platforms have been used in a variety of applications ranging from shallow coastal on-line observatories down to measuring in the deepest Ocean trenches. Focus will be on projects in which optode technology (primarily for CO2 and O2) has served to study different aspects of the carbon system including primary production/consumption, air-sea exchange, leakage detection from underwater storage of CO2 and measurements from moving platforms like gliders and ferries. The performance of recently developed pH optodes will als

Ensayo de correlación entre los parámetros geofísicos e hidrológicos de los depósitos volcánicos de la Caldera de Bandama (Gran Canaria)

[EN]The geometry and the hydraulic conductivity of the unsaturated zone is difficult to study from traditional techniques, like samples from trenches that normally provide surficial data or boreholes, that are expensive and provide local information. Non-destructive geophysical techniques and among them the electrical resistivity tomography method can be applicable in volcanic areas, where the lava flows and pyroclastic deposits have a wide range of values depending on the degree of fracturing and weathering of lava flows, and porosity and texture of the pyroclastic deposits. In order to characterize the subsurface geology below the golf course of Bandama (Gran Canaria) has conducted a campaign of electrical resistivity tomography profiles.