Antarctica.

• Main Authors: East Antarctica, Catherine Riaux-gobin, Labex Corail
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Correspondence; Dumont d’Urville; East Antarctica; Lejay; Lejay Bay; Pierre Lejay; Pierre-Lejay; Weddell; Weddell Sea; Antarc*; Antarctica; Petrel Island; Sea ice
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.641.9119; http://www.polarresearch.net/index.php/polar/article/download/19675/pdf_1/

Data pertaining to environmental conditions, sympagic (sea ice) microalgal dynamics and particle flux were collected before the spring ice break-up 2001 in Pierre Lejay Bay, adjacent to the Dumont d’Urville Station, Petrel Island, East Antarctica. An array of two multiple sediment traps and a current meter was deployed for five weeks, from 8 November to 6 December 2001. The sea-ice chlorophyll a and particulate organic carbon (POC) averaged 0.6 mg l1 (30 mg m2) and 20 mg l1 (1 g m2) near the coast. The POC export flux that reached a maximum of 79 mg m2 d1 during the study period was high compared to the one for the Weddell Sea. The flux was homogeneous from the surface to 47 m depth and increased sharply 33 days before the effective ice break-up. A north-western progressive vector of currents (i.e., Lagrangian drift) in the sub-ice surface waters was demonstrated. Bottom ice, platelet ice and under-ice water at 5 m were characterized by differences in colonization and short-term succession of microalgae.