摘要: During the period 6 through 18 October 1982, six flights by a U.S. Navy research aircraft were made over the Alboran Sea Gyre as part of the Donde Va experiment. During five of these flights, sonobuoys were dropped in a linear pat... 展开 During the period 6 through 18 October 1982, six flights by a U.S. Navy research aircraft were made over the Alboran Sea Gyre as part of the Donde Va experiment. During five of these flights, sonobuoys were dropped in a linear pattern designed to show the temporal and spatial variability of the current which constitute the gyre. A normal deployment consisted of approximately 15 sonobuoys dropped along the longitudinal line 4 deg 45 min W from the Spanish coast to within 30 km of the Moroccan coast. During the following four hours, the sonobuoys were located twice, their positions noted, and their individual drift speeds and directions derived. Aircraft precision radiation temperature and aircaft expendable bathythermograph data were collected concurrently with the sonobuoy drops to determine the thermal structure of the water during the drift period. Inertial navigation winds as well as other meteorological data, were also collected by the aircraft. Analysis of these data show that the cold (aprox 17 C) outer portion of the Alboran Sea Gyre was the main constituent of the jet. These cold waters reached speeds of greater than 1.2 m/sec as compared to average speeds of 0.6 m/sec for the warmer water of the gyre. Examination of the aircraft meteorological meaurements as well as data relating to the short-term atmospheric conditions i.e., for the 12-day period of the study) did not indicate that meteorological factors had a majot influence on the speed of the currents or the position of the gyre during the period of study. (Author) 收起