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Bacteria play a key role in the world’s oceans, supporting nutrient remineralisation and … mediating carbon transfer. Little is known about annual changes in bacterial concentration, production … and metabolism during the extreme seasonal changes in biological productivity in Antarctic … waters.
A high-resolution, offline ocean general circulation model, incorporating a realistic parameterization of … mixed layer convection, is used to diagnose pathways and time scales of Southern Hemisphere intermediate, mode, and lower thermocline water ventilation.
The Australian Antarctic Program’s iceberg dataset (from ship-based observations), including information from the austral summer seasons 1984/85 to 1999/2000, is examined and used … to extend earlier studies. Using ‘snapshots’ of the iceberg population to provide an idea of the iceberg … life cycle…
The dual HF radars comprising the Tasman International … Geophysical Environment Radar (TIGER) system … often observe localized high-velocity F-region plasma flows … (1500 m/s) in the midnight sector (20:00–02:00 MLT) at … magnetic latitudes as low as 3=60 S.