Figure 2 | Scientific Reports

Figure 2

From: Laterally spreading iron, humic-like dissolved organic matter and nutrients in cold, dense subsurface water of the Arctic Ocean

Figure 2

Vertical profiles of water properties and chemical constituents at typical offshore stations (A8, C5, D4 and D5).

(a), (b), Potential temperature (P-Temp) (a) and salinity (b) reveal a cold halocline layer (HL); the upper HL is from ~60 to 200 m depth and the lower HL is from ~200 to 280 m depth. (c), NO3. (d), PO4. (e), N* (an index of denitrification/anammox defined as ([NO3−] + [NO2−] + [NH4+] – 16[PO43−] + 2.9) × 0.87 in this study to detect deviations in the [NO3 + NO2 + NH4]:[PO4] ratio from the ratio expected from the internal N cycle, given Redfield stoichiometry19,20). (f), humic F-intensity [converted to the unified scale of fluorescence Raman units at an excitation wavelength of 350 nm (RU350)51,52]. (g), D-Fe. (h), T-Fe.

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