Osmium Isotopic Evidence for Ancient Subcontinental Lithospheric Mantle Beneath the Kerguelen Islands, Southern Indian Ocean

Science ◽  
1998 ◽  
Vol 280 (5362) ◽  
pp. 418-421 ◽  
Author(s):  
D. R. Hassler
Polar Biology ◽  
1998 ◽  
Vol 19 (4) ◽  
pp. 264-271 ◽  
Author(s):  
P. Bustamante ◽  
Y. Cherel ◽  
F. Caurant ◽  
P. Miramand

Polar Biology ◽  
2005 ◽  
Vol 28 (10) ◽  
pp. 776-783 ◽  
Author(s):  
Jean-Philippe Labat ◽  
Patrick Mayzaud ◽  
Stéphanie Sabini

2013 ◽  
Vol 10 (10) ◽  
pp. 6617-6628 ◽  
Author(s):  
A. Heimburger ◽  
R. Losno ◽  
S. Triquet

Abstract. The soluble fraction of aerosols that is deposited on the open ocean is vital for phytoplankton growth. It is believed that a large proportion of this dissolved fraction is bioavailable for marine biota and thus plays an important role in primary production, especially in HNLC oceanic areas where this production is limited by micronutrient supply. There is still much uncertainty surrounding the solubility of atmospheric particles in global biogeochemical cycles and it is not well understood. In this study, we present the solubilities of seven elements (Al, Ce, Fe, La, Mn, Nd, Ti) in rainwater on the Kerguelen Islands, in the middle of the Southern Indian Ocean. The solubilities of elements exhibit high values, generally greater than 70%, and Ti remains the least soluble element. Because the Southern Indian Ocean is remote from its dust sources, only a fraction of smaller aerosols reaches the Kerguelen Islands after undergoing several cloud and chemical processes during their transport, resulting in a drastic increase in solubility. Finally, we deduced an average soluble iron deposition flux of 27 ± 6 μg m−2 d−1 (~0.5 μmol m−2 d−1) for the studied oceanic area, taking into account a median iron solubility of 82% ± 18%.


1989 ◽  
Vol 94 (B6) ◽  
pp. 7885 ◽  
Author(s):  
G. L. Farmer ◽  
F. V. Perry ◽  
S. Semken ◽  
B. Crowe ◽  
D. Curtis ◽  
...  

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