Maping seafloor features and benthic habitats in mud volcanoes of the Moroccan margin of the Gulf of Cádiz using ROV underwater images
Authors
Sánchez-Guillamón, O. (Olga); Somoza-Losada, L. (Luis); Rueda, J.L. (José Luis); Vázquez, J.T. (Juan Tomás); Madureira, P. (Pedro); Rincón-Tomás, B. (Blanca); Medialdea, T. (Teresa); Palomino, D. (Desirée); González, F.J. (Francisco Javier); Fernández-Puga, M.C. (María Carmen); Fernández-Salas, L.M. (Luis Miguel); López-Pamo, E.; Gallardo-Núñez, M. (Marina); Benmakhlouf, M.; Mamouni, M.; León, R.; López-González, N. (Nieves)Date
2016-09-19Type
conference outputKeywords
mud volcanoesSEAFLOOR MORPHOLOGY
METHANE VENTS
BENTHIS HABITATS
GULF OF CADIZ
Abstract
In March 2014, the Spanish R/V Sarmiento de Gamboa equipped with the Portuguese multi-operational Remotely Operated Vehicle (ROV) "Luso 6000" explored and sampled five mud volcanoes of the Gulf of Cádiz during SUBVENT2 expedition. The explored mud volcanoes were Mercator, Yuma, Algacel, Mvseis and Madrid located offshore Moroccan Atlantic margin at water depths between 350 and 1650 meters. In addition, bathymetric data were acquired using the Atlas Hydrosweep DS multibeam echo-sounder and were processed with CARIS HIPS & SIPS yielding a bathymetric grid resolution of 15 m. The characterization of habitats and associated biota was based on high resolution videos and captured photographic material with MAGIX software as well as samples collected with the ROV. The observation was done during scanning the sea floor by TV camera at the altitude of 1-5 meters above the seafloor at low velocity of approximately 0.2-0.5m/s. Digital data analyses and their cartographical representation were ...
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