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Oxygen penetration deep into the sediment of the South Pacific gyre
Oxygen penetration sediment South Pacific gyre
2010/1/20
Sediment oxygen concentration profiles and benthic microbial oxygen consumption rates were investigated during an IODP site survey in the South Pacific Gyre. Primary production, particle fluxes and se...
A rapid transition from ice covered CO2–rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre
rapid transition ice covered CO2–rich waters CO2 sink
2010/1/18
Circumpolar Deep Water (CDW), locally called Warm Deep Water (WDW), enters the Weddell Gyre in the southeast, roughly at 25° E to 30° E. In December 2002 and January 2003 we studied the effect of entr...
Organic nutrients and excess nitrogen in the North Atlantic subtropical gyre
Organic nutrients excess nitrogen Atlantic subtropical gyre
2010/1/18
To enable an accurate estimate of total excess nitrogen (N) in the North Atlantic, a new tracer TNxs is defined, which includes the contribution of organic nutrients to the assessment of N:P stoichiom...
Gross community production and metabolic balance in the South Pacific Gyre,using a non intrusive bio-optical method
Gross community production metabolic balance South Pacific Gyre bio-optical method
2010/1/15
The very clear waters of the South Pacific Gyre likely constitute an end-member of oligotrophic conditions which remain essentially unknown with respect to its impact on carbon fixation and exportatio...
Volume distribution for particles between 3.5 to 2000 μm in the upper 200 m region of the South Pacific Gyre
Volume distribution particles 3.5 to 2000 μm South Pacific Gyre
2010/1/15
The French JGOFS BIOSOPE cruise crossed the South Pacific Gyre (SPG) on a transect between the Marquesas Islands and the Chilean coast on a 7500 km transect (8° S–34° S and 8° W–72° W). The number and...
Nitrous oxide distribution and its origin in the central and eastern South Pacific Subtropical Gyre
Nitrous oxide distribution central and eastern South Pacific Subtropical Gyre
2010/1/14
The mechanisms of microbial nitrous oxide (N2O) production in the ocean have been the subject of many discussions in recent years. New isotopomeric tools can further refine our knowledge of N2O source...
Photochemical production of ammonium in the oligotrophic Cyprus Gyre (Eastern Mediterranean)
Photochemical production ammonium oligotrophic Cyprus Gyre
2010/1/13
We investigated the photoproduction of ammonium (NH4+) in surface waters of the Cyprus gyre in the central Eastern Mediterranean in May 2002, in 8 on deck irradiations with freshly collected, filtered...