Cruise Summary Report of Sarmiento de Gamboa Cruise SUBVENT-2 (BSH Ref-No.: 20185398)
| General Information | |||||||||
| Platform/Ship | Sarmiento de Gamboa | ||||||||
| Cruise begin | 10.03.2014 | ||||||||
| Cruise end | 13.04.2014 | ||||||||
| Port of Departure | Vigo, Spain | ||||||||
| Port of Return | Vigo, Spain | ||||||||
| Chief Scientist(s) | SOMOZA LOSADA, LUIS - IGME, Geological Survey of Spain | ||||||||
| Responsible Laboratory | IGME, Geological Survey of Spain UCA/ University of Cadiz. Faculty of Marine and Environmental Science IEO/ Spanish Oceanographic Institute CSIC-UTM/ Marine Technology Unit |
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| Location | |||||||||
| General Ocean Areas | Atlantic Ocean | ||||||||
| Marsden Squares (S, N, E, W) | 109 (30.0, 40.0, -10.0, 0.0) 74 (20.0, 30.0, -20.0, -10.0) |
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| Project | |||||||||
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| Objectives | |||||||||
| Description | 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. | ||||||||
| Additional Information | |||||||||
| Parameters measured | Air temperature Wind strength and direction Atmospheric humidity Air pressure Raw temperature and/or salinity instrument output Horizontal spatial co-ordinates Gravity Solar Radiation Sedimentary structure Seismic reflection Bathymetry and Elevation Sound velocity and travel time in the water column Acoustic backscatter in the water column Seabed photography Magnetics Horizontal velocity of the water column (currents) Vertical velocity of the water column (currents) Temperature of the water column Salinity of the water column Dissolved oxygen parameters in the water column Dissolved concentration parameters for other gases in the water column |
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| Instruments used | meteorological packages thermosalinographs NAVSTAR Global Positioning System receivers gravimeters discrete water samplers underwater cameras CTD unconsolidated sediment corers airgun array hydrophones >2000 Hz top-bandwidth sub-bottom penetrator and mud profiler systems single-beam echosounders multi-beam echosounders magnetometers current profilers bathythermographs lowered current profilers |
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