TABLE 1.
Physical and chemical characteristics of the core water masses sampled during ARCHIMEDES-1a
| Water sample | Depth (m) | Temp (°C) | Salinity | Oxygen (μmol/kg) | NO3 (μmol/liter) | PO4 (μmol/liter) | SiO4 (μmol/liter) |
|---|---|---|---|---|---|---|---|
| Surfaceb | 100 | 20.25 (2.02) | 36.806 (0.281) | 198.8 (13.6) | 1.9 (3.1) | 0.12 (0.19) | 1.11 (0.62) |
| SACW | 250-500 | 11.27 (0.54) | 35.138 (0.076) | 96.5 (21.0) | 27.7 (2.1) | 1.72 (0.10) | 11.45 (0.77) |
| NACW | 250-500 | 16.11 (0.95) | 36.246 (0.183) | 176.5 (27.8) | 9.1 (5.2) | 0.50 (0.32) | 3.04 (1.79) |
| MSOW | 700-1,500 | 8.84 (0.60) | 35.439 (0.132) | 161.1 (14.9) | 22.9 (4.0) | 1.42 (0.28) | 13.58 (3.12) |
| AAIW | 700-1,500 | 5.60 (0.45) | 34.739 (0.084) | 109.7 (9.2) | 34.8 (1.0) | 2.28 (0.08) | 26.20 (1.84) |
| NEADW | 2,500-3,500 | 2.73 (0.05) | 34.952 (0.008) | 245.7 (3.0) | 19.7 (0.4) | 1.03 (0.03) | 26.04 (1.16) |
| LSW | 1,500-3,000 | 3.38 (0.05) | 35.016 (0.041) | 254.4 (6.5) | 18.8 (0.5) | 1.21 (0.03) | 19.07 (0.41) |
| LDW | 3,500-5,000 | 2.03 (0.02) | 34.893 (0.003) | 232.4 (1.6) | 22.3 (0.6) | 1.47 (0.02) | 42.10 (1.35) |
| AABW | 5,000 | 1.87 (0.00) | 34.878 (0.000) | 232.7 (0.0) | 23.3 (0.0) | 1.55 (0.00) | 50.70 (0.00) |
a
The mean values for the physical and chemical parameters for each water mass are given (SD in parentheses). The mixed water masses are not given.
b
“Surface” denotes the bottom of the euphotic layer at around 100 m of depth.