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Expeditions
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| Scripps Institution of Oceanography |
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SCRIPPS INSTITUTION OF OCEANOGRAPHY
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Downwind Expedition, 1957-1958
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| Downwind Expedition, 1957-1958 - Home |
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| Downwind Expedition was the first of three Scripps IGY expeditions. It was a two-ship expedition on HORIZON and SPENCER F. BAIRD. It examined by large-volume sampling the isotope properties of deep water and its circulation in the Southeast Pacific and studied the areal distribution of carbon dioxide in the atmosphere, near the sea surface, and in the surface waters. It studied the carbon dioxide exchange at the air-sea boundary. The two ships made geological-geophysical studies of the structure of the Southeast Pacific basins, the Peru-Chile Trench, and major intermediate-depth entities. Nasca Ridge was discovered, and the subduction model was established for the active deep trench off western South America. The expedition made Scripps’ first visit to Easter Island in January 1958. The results of the expedition proved to be important to plate tectonics. |
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