MD 218 / CROTALE

Type Oceanographic cruise
Ship Marion Dufresne
Ship owner TAAF
Dates 23/02/2019 - 11/03/2019
Chief scientist(s) CROSTA Xavier ORCID

ENVIRONNEMENTS ET PALÉOENVIRONEMENTS OCÉANIQUES ET CONTINENTAUX (EPOC) - TALENCE

UMR CNRS 5805 EPOC - OASU - Université de Bordeaux

Bâtiment A12

351 Cours de la Libération

33405 TALENCE CEDEX

+33 (0)5 40 00 36 15

https://www.epoc.u-bordeaux.fr/

DOI 10.17600/18000886
Objective

The primary aim of MD 218 / CROTALE expedition is to retrieve a suite of long sediment cores along bathymetric and zonal transects in the under-sampled southwestern Indian sector of the Southern Ocean (SO). This region is particularly important as it is modulating the redistribution of heat and salt by the Agulhas Current to the global ocean (Caley et al., 2014) and the redistribution of heat and salt to the SO by the Agulhas Return Current (Graham and De Boer, 2013). Additionally, the injection of iron via dust-born iron from South Africa (Lamy et al., 2014) and iron-leached from the Crozet Archipelago Plateau (Pollard et al., 2019) stimulates regional phytoplankton productivity with strong impact on geochemical cycles (C, N, Si).

Non-exhaustively, the main scientific objectives of MD218 CROTALE expedition are:

  • To characterize the temporal and spatial variability of the Antarctic Circumpolar Current, including surface transport and deep water flow as well as the Atlantic-Indian inter-basinal property exchange, complementing the objectives outlined for IODP Leg 361 site U1475 and for IndienSud project based on several cores off Kerguelen Islands.
  • To characterize the causes (dust iron vs remobilized iron; upwelling intensity) and consequences of changes in export production patterns and their implications for the biogeochemical cycles of carbon and nutrients over the Pleistocene.

Data managed by SISMER

Bibliography

Publications

Lowe Vikki, Cortese Giuseppe, Civel-Mazens Matthieu, Crosta Xavier, Bostock Helen. Pirumosphaera armandae nov. sp., a new Southern Ocean polycystine radiolarian genus and species. Revue de Micropaléontologie IN PRESS. Publisher's official version : https://doi.org/10.1016/j.revmic.2024.100773 , Open Access version : https://archimer.ifremer.fr/doc/00882/99381/


Lawler Kelly-Anne, Cortese Giuseppe, Civel-Mazens Matthieu, Bostock Helen, Crosta Xavier, Leventer Amy, Lowe Vikki, Rogers John, Armand Leanne K. (2021). The Southern Ocean Radiolarian (SO-RAD) dataset: a new compilation of modern radiolarian census data. Earth System Science Data, 13(11), 5441-5453. Publisher's official version : https://doi.org/10.5194/essd-13-5441-2021 , Open Access version : https://archimer.ifremer.fr/doc/00811/92278/


References of Articles published in other Periodicals or Scientific Works acclaimed in the Field

Patil Shramik, Mohan Rahul, Jafar Syed A, Gazi Sahina, Choudhari Pallavi, Crosta Xavier (2019). The coccolithophore family Calciosoleniaceae with report of a new species: Calciosolenia subtropicus from the southern Indian Ocean. Micropaleontology, 65(5), 459-471.


References of Technical Reports

Crosta Xavier, Scientific Party (2019). MD218 CROTALE Cruise Report. La Réunion – Crozet Islands – La Réunion. Flotte Océanographique Française. 87p. https://archimer.ifremer.fr/doc/00746/85831/


References of Articles published in periodicals and magazines for the general public

Benoit, M. (2019), La plus longue carotte sédimentaire a été prélevée dans les profondeurs de l'océan Austral (https://www.sciencesetavenir.fr/fondamental/geologie/record-de-carottage-sedimentaire-battu-dans-l-ocean-austral_133609)

Crosta, X. (2019), Un nouveau record de carottage sédimentaire depuis le N.O. Marion Dufresne pour une science plus ambitieuse (https://insu.cnrs.fr/fr/cnrsinfo/un-nouveau-record-de-carottage-sedimentaire-depuis-le-no-marion-dufresne-pour-une-science).

Info Presse IFREMER (2019), Record de longueur de carotte sédimentaire encore battu (https://wwz.ifremer.fr/Espace-Presse/Communiques-de-presse/Record-de-longueur-de-carotte-sedimentaire-encore-battu).

References of International Seminar Communications

Blaser, P., Crosta, X., Martínez-García, A., Jaccard, S.L., Frontal movements, iron fertilisation, and circulation changes at Crozet plateau (Southern Ocean) through the last glacial cycle. Goldschmidt International Conference on Geochemistry, Lyon, France, 9-14 July 2023. (https://conf.goldschmidt.info/goldschmidt/2023/meetingapp.cgi/Paper/19200)

Hirayama, M., Sawada, K., Matsui, H., Crosta, X., Ikehara, M., Reconstruction of the Polar Front over the past 700 kyrs in the Indian sector of the Southern Ocean. 2nd Asian Palaeontological Congress, Tokyo, Japan, 3-7 August 2023.

Matsui, H., Billy, I., Ther, O., Crosta, X., Horikawa, K., Ikehara, M. (2023), Southern Ocean fronts and temperatures during MIS 11 interglacial. Japan Geoscience Union Meeting, Chiba, Japan, 21-26 May 2023.

Choi, H., Crosta, X., Yang, J., Billy, I., Ha, S., Park, K., Khim, B.K. (2022), Orbital-scale change of surface water productivity in the Del Caño Rise (Southwest Indian Ocean) over the last 250 ka. AGU Fall Meeting 2022, Chicago, USA, 12-16 Dec 2022. (https://ui.adsabs.harvard.edu/abs/2022AGUFMPP42A..71C/abstract)

References of National Seminar Communications

Choi, H., Yang, J., Crosta, X., Billy, I., Park, K., Ha, S., Khim, B.K. (2023), Variation of CaCO3 content in the Del Caño Rise (Indian sector of the Southern Ocean) since the Mid-Pleistocene transition. Annual Meeting of KAOSTS, Busan, Korea, 3-4 May 2023.

Choi, H., Crosta, X., Billy, I., Ha, S., Park, K., Khim, B.K. (2022), Change of surface water productivity in the Del Caño Rise (Southwest Indian Ocean) during the late Quaternary. Fall Meeting of Korean Society of Oceanography, Gangneung, Korea, 2-4 Nov 2022.

Choi, H., Crosta, X., Park, K., Khim, B.K. (2022), Glacial-interglacial variation of biogenic opal content in the Del Caño Rise (Indian sector of the Southern Ocean). Annual Meeting of KAOSTS, Jeju, Korea, 2-4 June 2022.

Matsui, H., Billy, I., Ther, O., Crosta, X., Ikehara, M. (2020), Investigation of past natural iron fertilization in the Indian sector of the Southern Ocean. The 6th Annual Meeting of Paleosciences Society (PALEO10), Virtual meeting, Japan, 27 November 2020.

References of the Described New Species (faunal, floral, microorganisms), locations where the holotypes were stored

Shramik Patil, Rahul Mohan, Syed A. Jafar, Sahina Gazi, Pallavi Choudhari, Xavier Crosta (2019). The coccolithophore family Calciosoleniaceae with report of a new species: Calciosolenia subtropicus from the Southern Indian Ocean. Micropaleontology, 65(5), 459-471.

(Holotype repository: NCPOR/FESEM lab)

DEA or MASTER 2 using campaign data

Choi, H. (2024 in prep), Variation of biogenic opal content of core MD19-3575CQ in Del Cano rise of southwest Indian Ocean. MSc thesis, Pusan National University, Korea.

Hirayama, M. (2024 in prep), Polar front migrations over the last 1.5 Myr in the southeastern Indian sector of the Southern Ocean. MSc thesis, Akita University, Japan.

Ono, H. (2024 in prep), Surface water conditions during MIS11 in the southeastern Indian sector of the Southern Ocean, BsC thesis, Akita University, Japan.

Priyolkar, J. (2024 in prep), Past climate reconstruction from the Southern Ocean using fossil diatoms. MSc thesis, Goa University, India.

Curchod, M. (2023 in prep), Évolution de la productivité primaire en lien avec le fer dans l'océan Indien subantarctique depuis le dernier maximum glaciaire. BSc thesis, Université de Lausanne, Suisse.

Yang, J.Y. (2023), Relationship between sediment colors and carbonate content in Del Cano Rise of southwest Indian Ocean. MSc thesis, Pusan National University, Korea.

Albaredes, H. (2022), Etude de niveaux volcano-clastiques sous-marins autour des Crozet (océan Indien). Master 1 OCEANOGRAPHIE, Université de Bordeaux, France, pp. 30.

Kilcoyne, E.L. (2022), Late Pleistocene dinocyst assemblage changes in the southwest Indian Ocean. MSc thesis, Utrecht University, The Netherlands, pp. 56.

Sawada, K. (2021), Reconstruction of the Polar Front over the past 500 kyrs based on planktic foraminiferal assemblages in the Indian sector of the Southern Ocean. MSc thesis, Akita University, Japan, pp. 40.

Turel, C. (2021), Etude de dépôts volcanoclastiques dans les carottes de sédiments de l'archipel de Crozet (océan Indien). Master 1 OCEANOGRAPHIE, Université de Bordeaux, France, pp. 30.

Thesis using campaign data

Choudhari Pallavi (2024). Present and Past Coccoliths in the Southern Indian Ocean and their Paleoenvironmental Applicability. PhD Thesis, Goa University.


Civel, M. (2021), ACC fronts migrations in the Southern Indian Ocean over the last 360,000 years assessed from radiolarian assemblages. PhD thesis, Kochi University, Japan, pp. 307.

Thevenaz Antoine (2019). Constraining the vertical particle export during the last glacial cycle in Southern Indian Ocean sediment core. PhD Thesis, University of Bern. https://archimer.ifremer.fr/doc/00590/70180/