2026-06-26T16:39:37Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/69402023-07-17T19:37:28Zcom_20.500.14352_14col_20.500.14352_15

Somoza Losada, Luis Medialdea, Teresa González, Francisco J. Machancoses, Sara Cid, Constantino Calado, Antonio Afonso, Andreia Pinto Ribeiro, Luisa Blasco, Iker Albuquerque, Mónica Asensio Ramos, María Bettencourt, Renato Ignacio San José, Cristina de López Pamo, Enrique Ramos, Bruno Rincón-Tomás, Blanca Santofimia Pastor, Esther Souto, Miguel Tojeira, Inês Viegas, Cláudia Madureira, Pedro 2023-06-17T08:23:38Z 2023-06-17T08:23:38Z 2021 1744-5647 10.1080/17445647.2021.1898485 https://hdl.handle.net/20.500.14352/6940 https://doi.org/10.1080/17445647.2021.1898485 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. eng https://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España High-resolution multibeam bathymetry of the northern Mid-Atlantic Ridge at 45–46° N: the Moytirra hydrothermal field journal article