Structure of water masses in the archipelago Argentine Islands
- water masses,
- thermohaline structure,
- Antarctic Peninsula
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The structure of the water masses in the region of the archipelago Argentine islands was investigated according to the data oceanographic survey. The survey consisted of 60 stations of inter-island zone archipelago and three orthogonal cuts (10-12 stations) in the deep Straits of Penola. The two-layer vertical structure with desalinated water and warm surface layer and salty and cold water of bottom layer was observed in the area of inter-island. The thermocline is located at depths of 20-30 m in the northern and southern parts of the island area. The thermocline is located at a depth of 30-40 m in a more shallow central part of the island area, because there existed favorable conditions for spring-summer warming. Analysis of form T, S-curves allows to conclude that the monitoring space-time structure of the thermohaline field interisland the waters area enough make in a single point. The outlet glaciers of the Antarctic Peninsula in the summer generate large volumes of meltwater and create conditions for the formation of a three-layer structure of water. Cold intermediate layer separates relatively warm and more salty deep-water from warmed and freshened in summer conditions of surface waters. Analysis of T, S-diagrams of water of different regions of the western shelf of the Antarctic Peninsula led to the conclusion of a transfer of intermediate and deep waters from the south.