Lagoon hydrodynamics of pearl farming atolls: the case of Raroia, Takapoto, Apataki and Takaroa (French Polynesia)

Type Article
Date 2023
Language English
Author(s) Bruyère OrianeORCID1, Le Gendre RomainORCID2, Chauveau Mathilde1, Bourgeois Bertrand3, Varillon David3, Butscher John4, Trophime Thomas5, Follin Yann5, Aucan Jerome1, Liao VeteaORCID5, Andréfouët SergeORCID1, 6
Affiliation(s) 1 : IRD, UMR 9220 ENTROPIE (IRD, Univ. La Réunion, IFREMER, Univ. Nouvelle-Calédonie, CNRS), BPA5, 98948 Nouméa, New Caledonia
2 : Ifremer, UMR 9220 ENTROPIE (IRD, Univ. Réunion, IFREMER, Univ. Nouvelle-Calédonie, CNRS), BP 32078, 98897 Nouméa CEDEX, New Caledonia
3 : IRD, US 191 IMAGO (IRD. Nouvelle-Calédonie), BPA5, 98948 Nouméa, New Caledonia
4 : IRD, UMR 182 LOCEAN (IRD. Nouvelle-Calédonie), BPA5, 98948 Nouméa, New Caledonia
5 : Direction des Ressources Marines, BP 20, 98713 Papeete, French Polynesia
6 : IRD, UMR-9220 ENTROPIE (Institut de Recherche pour le Développement, Université de la Réunion, IFREMER, CNRS, Université de la Nouvelle-Calédonie), BP 49, 98725 Vairao, Tahiti, French Polynesia
Source Earth System Science Data (1866-3516) (Copernicus GmbH), 2023 , Vol. 15 , N. 12 , P. 5553-5573
DOI 10.5194/essd-15-5553-2023
Abstract

Between 2018 and 2022, four pearl farming Tuamotu atolls of French Polynesia were monitored with autonomous oceanographic instruments to measure the hydrodynamics of atoll lagoons and the ocean-lagoon water exchanges. These surveys were conducted in the frame of ANR MANA (Management of Atolls) project and its extensions to additional sites. The overarching goal was to improve knowledge on the processes influencing the spat collection of the pearl oyster Pinctada margaritifera, the oyster species used to produce black pearls. These data sets are also critical for the calibration and validation of 3D high spatial resolution hydrodynamic models used to study the oyster larval dispersal within lagoons. The observational strategies focused on the characterization of ocean/lagoon exchanges through passes and hoa (i.e., shallow reef flats), lagoon circulation, incident waves breaking on the forereef, water elevation inside lagoon as well as spatial temperature variability. Chronologically, the investigated atolls were first Raroia Atoll with 9 months measurements between May 2018 and March 2019 during which the MALIS1 and MALIS2 cruises on-board the R/V ALIS took place. It was followed by a 4-month deployment in Takapoto Atoll (November 2021 to March 2022). In late April 2022, Apataki Atoll was instrumented until end of July, followed by Takaroa measurements between July to October. Apataki (Leg2) and Takaroa Atoll were conjointly instrumented during the MALIS 3 oceanographic cruise. Altogether, those multi-atoll data bring a worldwide unique oceanographic atoll data set, useful to address local pearl farming questions but potentially beneficial for other fundamental and applied investigations. Each data set was post processed, quality controlled and converted in NetCDF format. Files are available in open source into dedicated repositories in the SEANOE marine data platform with permanent DOIs.

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Preprint - 10.5194/essd-2023-198 32 2 MB Open access
Publisher's official version 21 9 MB Open access
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Bruyère Oriane, Le Gendre Romain, Chauveau Mathilde, Bourgeois Bertrand, Varillon David, Butscher John, Trophime Thomas, Follin Yann, Aucan Jerome, Liao Vetea, Andréfouët Serge (2023). Lagoon hydrodynamics of pearl farming atolls: the case of Raroia, Takapoto, Apataki and Takaroa (French Polynesia). Earth System Science Data, 15(12), 5553-5573. Publisher's official version : https://doi.org/10.5194/essd-15-5553-2023 , Open Access version : https://archimer.ifremer.fr/doc/00841/95335/