Bathymetry and geological setting of the Drake Passage (Antarctica)

• Main Authors: Bohoyo, Fernando, Larter, R.D., Galindo Zaldívar, Jesús, Leat, P.T., Maldonado, Andrés, Tate, A.J., Flexas, M.M., Gowland, E.J.M., Arndt, J.E., Dorschel, B., Kim, Y.D., Hong, J. K., López Martínez, Jerónimo, Maestro González, Adolfo, Bermúdez Molina, Oscar, Nitsche, F.O.
• Other Authors: Ministerio de Economía y Competitividad (España)
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sociedad Geológica de España 2016
• Subjects: bathymetry; seafloor; Drake-Passage; Scotia-Arc; Antarctica; batimetría; fondo marino; Paso de Drake; Arco de Scotia; Antártida; Antarctic; Southern Ocean; The Antarctic; Antarctic Peninsula; Drake Passage; Pacific; Alfred Wegener Institute; Antarc*; British Antarctic Survey; Korea Polar Research Institute
• Online Access: http://hdl.handle.net/10261/276812; https://doi.org/10.13039/501100003329

IX Congreso Geológico de España, Huelva, Septiembre 2016 The Drake Passage is an oceanic gateway of about 850 km width located between South America and the Antarctic Peninsula that connects the southeastern Pacific and the southwestern Atlantic oceans and is an important gateway for mantle flow, oceanographic water masses, and migrations of biota. This gateway developed within the framework of geological evolution of the Scotia Arc. As a consequence of this and subsequent submarine processes, this region shows a varied physiography. The new detailed map in the Drake Passage region is mainly founded on a compilation of precise multibeam bathymetric data obtained on cruises between 1992 and 2014, and covers the area between parallels 52ºS and 63ºS and meridians 70ºW and 50ºW. The new map that we present is based in a DTM with 200 m cell resolution of the seafloor in Drake Passage that permits identification of the main seafloor features and the map includes additional useful geological information. This work constitutes an international cooperative effort and is part of IBCSO project (International Bathymetric Chart of the Southern Ocean), under the SCAR umbrella. Instituto Geológico y Minero de España, España British Antarctic Survey, Reino Unido Departamento de Geodinámica, Universidad de Granada, España Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de Investigaciones Científicas, España Instituto Andaluz de Ciencias de la Tierra, Universidad de Granada, España Jet Propulsion Laboratory M/S 300-323, Estados Unidos Alfred Wegener Institute, Alemania Korea Polar Research Institute, Corea Departamento de Geología y Geoquímica, Universidad Autónoma de Madrid, España Lamont-Doherty Earth Observatory, Columbia University, Estados Unidos