The Original Data as Observed by R/V COLUMBUS ISELIN during the Equatorial Oceanographic Experiment GATE 1974,
ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE MIAMI FLA
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During the second phase of GATE, a current profiling experiment was carried out by research vessels from four nations. The vessels operated at or near the equator in the vicinity of the following longitudes RV COLUMBUS ISELIN U.S.A. near 28 deg W RV ALEXANDER von HUMBOLDT G.D.R. near 24 deg W RV ACADEMICIAN KURCHATOV U.S.S.R near 23 deg 30 min W and RV CAPRICORNE France near 10 deg W KURCHATOV worked at a fixed position the other three vessels operated as roving ships. All vessels were equipped with profiling current meters PCMs, provided by the University of Miami see Dueing and Johnson, 1972 for details on instrumentation. Current and temperature profiles were taken in the vicinity of anchored radar reference buoys. Profiling operations were routinely carried out to a water depth of 600 meters, lasting about 2-12 hours per profile. During the observation of a relative current profile, radar distance and azimuth to a reference buoy were observed at 10 minute intervals. A mean drift vector over ground was computed and subsequently used to transform the relative current profile into an absolute profile. The relative error of the measurements made by the ISELIN is approximately or - 8 of the values of the flow components.
- Physical and Dynamic Oceanography