BUSCADOR RECOLECTA

Digital.CSIC. Repositorio Institucional del CSIC

oai:digital.csic.es:10261/232046

SUBVENT-2 Cruise (29SG20140310) carried out on the Research Vessel Sarmiento de Gamboa in 2014, The main scientific objectives of the SUBVENT-2 have been: 1)To survey and study the morphology and geophysical configuration of the mud volcanoes and magmatic volcanoes and identify active cold seeps and hot springs along the continental margins of the Gulf of Cádiz and Canary Islands. 2)To explore, sample and to photography active seabed fluid features. 3)To identify bio-mineralizations (nodules, crusts and chimneys) formed by the action of micro/macro chemosynthetic organisms and mineralization processes. 4) To recognize the role of global change and tectonics in the episodic event of eruption of gas-related mudand enriched-volatile magmatic submarine volcanoes. Technical tasks: The technical tasks carried out during the SUBVENT-2 cruise have been: 1)Multibeam mapping and CHIRP ultra-high resolution profiles on the selected targets. 2) High-resolution seismic profiles with air-gun array and 3-channel streamer. 3)Dives with the ROV LUSO using high-resolution video, methane and CO2 probes, micro-cores, aspiration tubes, rock sampling and niskin bottles. 4)Thermosalinograph (CTD) probes and Niskin bottle rosette sampling. 5) Sampling with 2-5 m gravity core