Details of BIOGEOCHEMICAL dataset collected during the TONGA cruise


Dataset identification

Title of datasetBIOGEOCHEMICAL dataset collected during the TONGA cruise
Narrative summary of datasetThe objective of the TONGA oceanographic expedition was to study the control of productivity and carbon sequestration by micronutrients of shallow hydrothermal origin in the Western Tropical South Pacific (WTSP) Ocean. The 37-day oceanographic survey took place on board the R/V L’Atalante in 2019 between Oct. 31 to Dec. 6 (Nouméa-Nouméa). Over a large area of the WTSP the team acquired numerous results on both the entire water column (up to the sediment) and the atmosphere. Specific task are represented on figure 1: (task 1) to characterize chemically and optically shallow hydrothermal fluids and to compare the source from below (shallow hydrothermal fluids) with the source from above (atmospheric deposition); (task 2) to quantify the dynamical dispersion of the fluids at small and regional scale; (task 3) to investigate the impact of the shallow hydrothermal sources on the biological activity and diversity, and the feedback to the atmosphere via the oceanic emissions of primary and secondary aerosols. (Task 4) to communicate about the campaign (see for example our Tweeter account ( A long west to east (up to the blue waters of the gyre) transect allowed to characterize the different biogeochemical provinces crossed and a focus in the region of the Lau Basin allowed to investigate the impact of shallow hydrothermal sources. A series of short and long stations allowed to fully characterize the stocks and the fluxes in the different provinces. Short-term (up to 10 days) processes studies have been conducted (drifting moorings and minicosms experiments). Part of these results will feed into important modeling work. A fixed mooring line launched at the end of the campaign and recovered in Nov. 2020 as well as the 7 ARGO floats and 20 drifting buoys that were dropped during the campaign provide a broader temporal context of the acquisitions done during the campaign. An important focus of the campaign was the trace metal characterization of the entire water column. For this, TONGA has been labeled by the international program GEOTRACES ( The impact on biological communities of fluids is supported by the international IMBER program ( The TONGA project is also part of the LEFE program (funding by LEFE-CYBER and LEFE-GMMC), the ANR (Appel à projets génériques) and the Fondation A-MIDeX of the Aix-Marseille Université. Scheme of the different tasks of the TONGA project and cruise Image Reference: Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications.
Supporting documentation
  • 486_18000884
  • Start date2019-01-11
    End date2019-11-28
    Frequency of observationshour to sub-day

    Responsible organisations

    Organisation nameParis VI University, ECCE TERRA, OSU
    Role of organisationPublisher
    Organisation nameIfremer, Scientific Information Systems for the sea
    Role of organisationDataset Holding Organisation
    How to citeGuieu Cécile, Bonnet Sophie, Abadou Fatima, Alliouane Samir, Arnaud-Haond Sophie, Arnone Veronica, Baudoux Anne-Claire, Baumas Chloe, Beillard Lucie, Benavides Mar, Berman-Frank Ilana, Bhairy Nagib, Bigeard Estelle, Boulart Cedric, Bouruet-Aubertot Pascale, Boyd Philip, Bressac Matthieu, Camps Mercedes, Chaffron Samuel, Chavagnac Valérie, Chevaillier Servanne, Collot Julien, Cuypers Yannis, de Liège Guillaume, de Saint Léger Emmanuel, de Vargas Colomban, Desboeufs Karine, Desgranges Marie-Maelle, Destrigneville Christine, Dimier Céline, Diruit Wendy, Dissard Delphine, Doussin Jean-François, Dufour Aurélie, Dulaquais Gabriel, Fernandez Jean-Michel, Feron Anaïs, Ferrieux Mathilde, Filella Alba, Forrer Heather, Fourrier Pierre, Gac Jean-Philippe, Gachenot Martin, Gaimoz Cécile, Garczarek Laurence, Gazeau Frédéric, Gonzalez Aridane, Gonzalez Santana David, Gorgues Thomas, Grima Nicolas, Grisoni Jean-Michel, Grosso Olivier, Guigue Catherine, Habasque Jeremie, Heimbürger-Boavida Lars-Eric, Jeandel Catherine, Jeanthon Christian, Journet Emilie, Knapp Angela, Lacan François, Le Gall Florence, Le Moal Pierre, Le Moigne Frédéric, Leblanc Karine, Leblond Nathalie, Lebourges-Dhaussy Anne, Leconte Jade, Lefèvre Dominique, Lombard Fabien, Lorrain Anne, Lory Caroline, Maes Christophe, Mahieu Léo, Marie Dominique, Mazoyer Camille, Menkes Christophe, Michoud Vincent, Montanes Maryline, Not Fabrice, Nunige Sandra, Paparella Francesco, Patriat Martin, Pelletier Bernard, Petrenko Anne, Planquette Helene, Point David, Portlock Gemma, Probert Ian, Pulido-Villena Elvira, Ratin Morgane, Ratnarajah Lavenia, Riso Ricardo, Rizzo Andrea, Salaun Pascal, Sarthou Geraldine, Schmechtig Catherine, Sellegri Karine, Simon Nathalie, Tagliabue Alessandro, Taillandier Vincent, Tamburini Christian, Tedetti Marc, Thibon Fanny, Tilliette Chloé, Torres Rodriguez Natalia, Triquet Sylvain, Uitz Julia, Van Wambeke France, Vaulot Daniel, Vigier Nathalie, Vilain Marion, Vorrath Maria Helena, Weppe Lucas, Whitby Hannah (2022). BIOGEOCHEMICAL dataset collected during the TONGA cruise. SEANOE.

    Dataset availability

    Original dataset download link
    Dataset formatCSV, PDF, TXT
    Network Common Data Form
    Public accessNo limitations
    License for useCC-BY 4.0


    Latitude north boundary-19
    Longitude east boundary-166
    Latitude south boundary-21
    Longitude west boundary167
    Sea areaSouth Pacific Ocean
    Vertical extent minimum3 Metres
    Vertical extent maximum5465 Metres

    Data types, collection and processing

    Observation typePigments
    Dissolved gases
    Optical properties
    Water column temperature and salinity
    ParameterAlkalinity, acidity and pH of the water column
    Chlorophyll pigment concentrations in water bodies
    Dissolved oxygen parameters in the water column
    Salinity of the water column
    Temperature of the water column
    Concentration of suspended particulate material in the water column
    Visible waveband radiance and irradiance measurements in the water column
    Instrument typeCTD
    discrete water samplers
    Instrument nameWater bottle
    Platform typeresearch vessel
    Platform nameL'Atalante
    Data quality processing informationQuality controlled data

    Process information

    Submitting organisationParis VI University, ECCE TERRA, OSU
    Submission identifier (UUID)a53ad03f-3838-8383-3831-000000088169
    Date of dataset creation2022-09-05
    Date of dataset revision2022-09-14
    Date of metadata creation2022-9-17
    Date of metadata latest revision2022-10-10
    Date of publishing2022-10-26
    Processing data centreIfremer, Scientific Information Systems for the sea
    Summary record-ID1130