Arumí, C

Balbín, R. (Rosa)

Cainzos, V.

Cana, L.

Cubas, M.

García-Martínez, M.C. (María del Carmen)

Mosquera-Giménez, A. (Ángela)

Tel, E. (Elena)

Vargas-Yáñez, M. (Manuel)

Vélez-Belchí, P. (Pedro)

English

Caínzos, V. (Verónica)

Cana-Cascallar, L. (Luis)

Repositorio Institucional Digital del IEO

       VI Expanding Ocean Frontiers conference (EOF 2021) Barcelona (Spain), 5th - 7th July 2021    GRAVEST EMPIRICAL MODE IN THE SOUTH ATLANTIC SUBTROPICAL GYRE AT 9W TO BE USED BY THE INVERTED ECHO SOUNDERS (IES)  Melania Cubas Armas*1, Cristina Arumí-Planas1, Rosa Balbín Chamorro2, Verónica Caínzos1, Luis Cana Cascallar1, Oscar Chic Giménez3, Mikhail Emelianov Kolomitski3, María del Carmen García Martínez2, Luis García Weil1, Diana Grisolía Santos1, Carmen Gordo Rojas1, Alonso Hernández Guerra1, Nina Hoareau3, Francisco Machín Jiménez1, María de los Ángeles Marrero Díaz1, Antonio Martínez Marrero1, Ángela Mosquera Giménez2, José Luis Pelegrí Llopart3, María Dolores Pérez-Hernández1, Ángel Rodríguez Santana1, Elena Roget Armengol3, Joaquín Salvador Castiella3, Daniel Santana-Toscano1, Carine Simon3, Elena Tel2, Manuel Vargas Yañez2, Pedro Vélez Belchí2, Montserrat Vidal Barcelona3, Álvaro Viúdez Lomba3  1 Unidad Océano y Clima, Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, Unidad Asociada ULPGC-CSIC, Canary Islands, Spain   melania.cubas@ulpgc.es 2 Centro Oceanográfico de Canarias, Instituto Español de Oceanografía, Santa Cruz de Tenerife, Canary Island, Spain. 3 Departament d’Oceanografia Física i Tecnològica, Institut de Ciències del Mar, CSIC, Barcelona   Abstract:   Pressure-equipped Inverted Echo Sounders (PIES) are oceanographic instrument that, together with historical hydrographic data, permits to estimate full water column profiles of temperature, salinity, and, therefore, density. From the thermal-wind equation, an array of PIES can provide full water column estimates of geostrophic velocity. We are interested in determining the zonal flows in the South Atlantic using PIES. For that purpose, we plan to deploy four PIES at 9°W, between 20°S and 34.5°S the South Atlantic Gateway (SAGA), that will allows us to observe the circulation of two water masses, the South Atlantic Central Water (SACW) and the North Atlantic Deep Water (NADW). Both waters mases flow, in opposite directions, across the South Atlantic, between Cape town and Brazil, through the SAGA. To be able to use PIES to determine temperature and salinity it is necessary to determine the Gravest Empirical Mode (GEM), i.e, the relationship between the acoustic travel time observed by the PIES and the historical observations of salinity and temperature. Here we present, using all the historical CTD and Argo hydrographic data available in the South Atlantic ocean, the GEM estimated for the SAGA, including estimations of the error in the geostrophic transport.    Key words: South Atlantic, Hydrography, Circulation, Argo     Acknowledgments: This study has been performed as part of the SAGA project (RTI2018-100844-B-C31) funded by the Spanish Government. This article is a publication of the Unidad Océano y Clima of the Universidad de Las Palmas de Gran Canaria, a R&D&i CSIC‐associate unit.   

GRAVEST EMPIRICAL MODE IN THE SOUTH ATLANTIC SUBTROPICAL GYRE AT 9W TO BE USED BY THE INVERTED ECHO SOUNDERS (IES)

http://www.repositorio.ieo.es/e-ieo/bitstream/10508/11767/1/Abstract_EOF.pdf

GRAVEST EMPIRICAL MODE IN THE SOUTH ATLANTIC SUBTROPICAL GYRE AT 9W TO BE USED BY THE INVERTED ECHO SOUNDERS (IES)

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