San Jorge Gulf data set PSi
Description
It is a data set from two spring campaigns in San Jorge Gulf (2016 and 2017). Station locations and corrected biogenic and lithogenic silica data by depth layer and dust deposition estimations based in satellite image are presented.
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Water samples were taken during two November campaigns (2016-2017) in San Jorge Gulf, in the frame of Pampa Azul initiative, aboard the R/V "Puerto Deseado" using an oceanographic rosette equipped with Niskin bottles. The water obtained was filtered through polycarbonate membranes of 0.6 μm pore size and 47 mm diameter. The filters with the retained particles were placed in 15 ml falcon tubes and dried at 60 °C for 48 hours. In the laboratory, the filters were used for particulate silica analyses (biogenic and lithogenic) following the technique described in Brzezinski and Nelson 1989. The resulting DSi concentrations were measured using the method of Grasshoff et al., 2009 and interference corrections were applied following the suggestions of Ragueneau et al., 2000.