Reconnaissance geophysique, geologique, petrographique et geochimique systematique du point triple de Rodriguez ou convergent trois dorsales medio-oceanique. Exploration geophysique, geologique, petrographiqueet geochimique d'un segment de la zone axiale de chacune des trois dorsales. Reconnaissance, dans le bassin de Wharton, d'une dorsale fossile.

Acquirement of multibim bathymetric datas along the south-west indian ridge between 57°E ans the Rodrigues triple junction.

Bathymetry around Saint-Paul and Amsterdam Islands: the Digital Terrain Model is the result of data compilation of multibeam surveys from 1984 to 2019. Grid resolution is 150 m. The DTM was processed as part of the French national program (EXTRAPLAC) for the delineation of the outer limit of the continental shelf beyond 200 nautical miles, and in collaboration between Ifremer and the Western Brittany University (UBO Brest). - MD157/ PLURIEL: 2006, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/6200130 - BOOMRANG-Leg6: 1996, R/V Melville, https://calisphere.org/item/ark:/20775/bb9424302r/ The datasets from the following cruises have been also integrated: - MD171/ GEISEIR1: 2009, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/9200050 - MD120/ ANTAUS: 2000, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/200090 - MD118/ DEFLO: 2000, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/200070 - MD106/ IPHIS: 1997, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/97200010 - HYDROAMSTERDAM: 1984, R/V Jean Charcot, https://doi.org/10.17600/84000111 - NBP0406: 2004, R/V Nathaniel B. Palmer, DOI 10.7284/905502 - MD197/ MYCTO: 2014, R/V Marion Dufresne, SMF Seafalcon, https://doi.org/10.17600/14002500 - MD211/ OBSAUSTRAL: 2018, R/V Marion Dufresne, EM122, https://doi.org/10.17600/18000490 - MD217/ OBSAUSTRAL: 2019, R/V Marion Dufresne, EM122, https://doi.org/10.17600/18000885 - TN362 (Coring to Reconstruct Ocean Circulation and Carbon-dioxide Across 2 Seas: CROCCA-2s), R/V Thomas G. Thompson, 2018. 10.7284/908704

Bathymetry around the Kerguelen Islands: the Digital Terrain Model results from the data compilation of multibeam surveys from 1998 to 2011. Grid resolution is 200 m. The DTM has been processed as part of the French national program (EXTRAPLAC) for the delineation of the outer limit of the continental shelf beyond 200 nautical miles - MD137-Kergueplac1 cruise, ROEST Walter (2004), RV Marion Dufresne, https://doi.org/10.17600/4200040 - MD 150 /DELCANO RISE-KERGUEPLAC2 cruise, ROEST Walter (2005), RV Marion Dufresne, https://doi.org/10.17600/5200060 - MD 165 / KERGUEPLAC 3 cruise, VIALLY Roland, BRUNET Christian, ROYER Jean-Yves (2008), RV Marion Dufresne, https://doi.org/10.17600/8200010 - KERIMIS-MD109 cruise, SCHLICH Roland (1998), RV Marion Dufresne, https://doi.org/10.17600/98200010 - VT 51 / OISO 6 cruise, METZL Nicolas, PIERRE Catherine (2001), RV Marion Dufresne, https://doi.org/10.17600/1200010 - MD 125 / SWIFT BIS-CARHOT cruise, ASLANIAN Daniel, HUMLER Eric, MICHEL Elisabeth (2002), RV Marion Dufresne, https://doi.org/10.17600/2200020 - MD 136 / VIGO cruise, MICHEL Elisabeth (2004), RV Marion Dufresne, https://doi.org/10.17600/4200110 - MD 185 / INDIEN SUD 1 cruise, MAZAUD Alain, MICHEL Elisabeth (2011), RV Marion Dufresne, https://doi.org/10.17600/11200030) - MD 189 / INDIEN SUD 2 cruise, MAZAUD Alain, MICHEL Elisabeth (2012), RV Marion Dufresne, https://doi.org/10.17600/12200010)

REPHY is a national network covering the coast of the French mainland along with that of three of its overseas departments: Martinique, Guadeloupe and Reunion Island. The aims are as follows: - to observe all phytoplankton species in the coastal waters and to monitor events such as coloured water, exceptional blooms, and the proliferation of species which are toxic or disruptive to marine fauna, - Particularly to monitor species producing toxins which are dangerous to shellfish consumers . These objectives are complementary, as the regular monitoring of all phytoplankton species makes it possible to detect known toxic and invasive species, but also to detect potentially toxic species. It is the presence of these toxic species in the water which triggers the monitoring of toxins in shellfish. The mission of REPHY is to monitor shellfish in their natural environment (such as parks and deposits). For shellfish removed from marine environments (that is to say in shellfish logistics establishments or on markets prior to export), national monitoring and control plans are organised by the General Food Directive at the French Ministry of Agriculture. Analyses are performed by the accredited departmental veterinary laboratories as organised by the National Reference Laboratory from the French Food Safety Agency.