Trace metals Ross Sea Phantastic 01 ...

• Main Authors: Gerringa, Loes, Alderkamp, Anne-Carlijn, Arrigo, Kevin, Van Dijken, Gert, Laan, Patrick, Middag, Rob
• Format: Dataset
• Language: unknown
• Published: NIOZ 2020
• Subjects: Antarc*; Antarctic; Ice Sheet; Ross Sea; Sea ice
• Online Access: https://dx.doi.org/10.25850/nioz/7b.b.r; https://dataportal.nioz.nl/doi/10.25850/nioz/7b.b.r

The dissolved trace metals Zn, Cd, Co, Cu, Fe, Mn, Ni, Ti, La, Y and Pb were analysed via ICPMS in samples from the Ross Sea obtained during a cruise between 20 December 2013 and 5 January 2014. The dissolved concentrations of Zn, Cd, Co, Cu, Fe, Mn, Ni and Ti were significantly lower in the Antarctic surface Water (AASW) compared to the other deeper water masses, indicating biological uptake and possibly scavenging. For La and Y, the concentrations in AASW were higher than in Winter Water (WW). This can be explained by a spring source from ice melt followed by loss during summer and autumn, probably due to passive adsorption. Dissolved Pb (DPb) was low (16 pM) and no distinction between water masses was possible. Akin to the macro-nutrients nitrate and silicate, the modified Circumpolar Deep Water (mCDW) shows elevated DCd compared to the shelf water masses. Sea ice melt and ice sheet melt released DZn, DFe, DMn, DNi, DY, DLa, and probably DPb into the Ross Sea. However, only DFe, DMn, DY and DLa are ...