Campaign: VULCANA-II 1118-ROV
Description
The main objective of the project VULcanology CAnaria submariNA, VULCANA, is to study from a physical-chemical, biological and geological point of view submarine volcanoes and hydrothermal systems active or not in the entire Canary basin. In addition, special attention will be paid to the continuity of the studies carried out in the Tagoro submarine volcano on the island of El Hierro, continuing, with one of the longest physical-chemical-biological time series in Spanish territory. The specific objectives of the Vulcana1118-ROV campaign will be: 1. Visualization and sampling around the anchoring carried out during the previous campaign (Vulcana-II-0318). The physical-chemical anchor will recover by autonomous pathways with acoustic release. If these techniques fail, the ROV will be used to completely recover the reinforced concrete block with all its sensors from inside the main crater of the Tagoro submarine volcano, at a depth of 127m. 2. Realization of a uniform regular mesh over the entire Tagoro volcanic building with the ROV for the realization of a complete map of the hydrothermal vents. Physical-chemicalbiological and geological samples of the interior of each of these points will be collected with the use of ROV arms and specifically designed samplers (pressure bottles with on/off valves, inverted funnels, mini-ctds, micro-thermal sensors, etc). 3. Placement and collection of physical instruments in test phase on active hydrothermal environments (areas with physical sensors in self-contained and with automatic release capacity - Kaust). The writing of some task related to this objective would be missing in the established format (objective, methodology, responsible researcher, institution, etc.). 4. Continue monitoring studies of the only active submarine volcano in the degassing phase of Spanish territory, Tagoro underwater volcano, on the island of El Hierro.
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