Circulation in Antarctic waters as revealed by iceberg tracks 1972–1983

Abstract Between February 1972 and January 1983, successively using positioning satellites Eole, Nimbus F, Tiros N-Argos, movements of 21 Antarctic icebergs were monitored daily from radio transmissions; 17 of the bergs were followed over periods of 228–828 days through distances of 1600 to 8000 km...

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Bibliographic Details
Published in:Polar Record
Main Authors: Tchernia, Paul, Jeannin, Pierre François
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1984
Subjects:
Online Access:http://dx.doi.org/10.1017/s0032247400005386
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400005386
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Summary:Abstract Between February 1972 and January 1983, successively using positioning satellites Eole, Nimbus F, Tiros N-Argos, movements of 21 Antarctic icebergs were monitored daily from radio transmissions; 17 of the bergs were followed over periods of 228–828 days through distances of 1600 to 8000 km (2000 to 5000 nautical miles, nm). Mean daily positions, calculated from several observations, were accurate to less than 5.5 km (3 nm) for Eole and Nimbus, 0.9 km (0.5 nm) for Argos. Grouped into three areas (Weddell Sea, Enderby Land to Adelie Land, Ross Sea), the trajectories cover four fifths of the continental periphery. Movements clearly indicate singular points along the boundary between the two circumpolar currents, the East Wind and West Wind drifts, and variations in the strength and direction of flow of these currents; submarine topography and other underlying causes are suggested.