%0 Journal Article
%A Somoza Losada, Luis
%A Medialdea, Teresa
%A González, Francisco J.
%A Machancoses, Sara
%A Cid, Constantino
%A Calado, Antonio
%A Afonso, Andreia
%A Pinto Ribeiro, Luisa
%A Blasco, Iker
%A Albuquerque, Mónica
%A Asensio Ramos, María
%A Bettencourt, Renato
%A Ignacio San José, Cristina de
%A López Pamo, Enrique
%A Ramos, Bruno
%A Rincón-Tomás, Blanca
%A Santofimia Pastor, Esther
%A Souto, Miguel
%A Tojeira, Inês
%A Viegas, Cláudia
%A Madureira, Pedro
%T High-resolution multibeam bathymetry of the northern Mid-Atlantic Ridge at 45–46° N: the Moytirra hydrothermal field
%D 2021
%@ 1744-5647
%U https://hdl.handle.net/20.500.14352/6940
%X This work presents a new high-resolution multibeam bathymetric map of a segment of active deep sea-floor spreading in the Atlantic Ocean, the northern Mid-Atlantic Ridge (MAR) at 45–46º N. New high-resolution bathymetry data were acquired using an Atlas multibeam echosounder onboard the research vessel Sarmiento de Gamboa during the EXPLOSEA-2 survey in 2019. The final map of the MAR (50 m cell grid size) at the original scale of 1:200,000 shows a segment of 140 × 35 km of the MAR, at water depths from 715 to 3700 m. This new high-resolution bathymetric map allows to better defining the submarine morphology of the Moytirra hydrothermal active field, the only high-temperature field identified between the Azores Archipelago (Portugal) and Iceland. ROV submarine observations reaching the deepest part of the system for the first time show giant anhydrite-sulfide chimneys up to 20 m high, active strong black smokers and polymetallic massive sulfides.
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