Geostrophic currents in the Antarctic zone of the Indian Ocean
The research ship KAIYO MARU (Jap. Fish. Agency) occupied 36 oceanographic stations between 61°and 65°S and between 110°and 120°E during the period from January 13 to 29,1980. Dynamic topography and corresponding currents were computed with reference to the 1500-decibar surface. Eastward flow is dom...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
National Institute of Polar Research
1981-09-01
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| Series: | Antarctic Record |
| Online Access: | https://doi.org/10.15094/00008260 |
| Summary: | The research ship KAIYO MARU (Jap. Fish. Agency) occupied 36 oceanographic stations between 61°and 65°S and between 110°and 120°E during the period from January 13 to 29,1980. Dynamic topography and corresponding currents were computed with reference to the 1500-decibar surface. Eastward flow is dominant in the survey area, including the cyclonic and anticyclonic eddies in the area between 62°and 63°20'S and between 105°and 110°E. Cyclonic and anticyclonic circulations are also existing along 120°E. A strong meandering of eastward flow is recognized south of 63°S, which must be influenced by the bottom configuration. The velocity of geostrophic current, relative to the 1500-decibar surface, north of 64°20'S in the survey area gradually decreased toward the deep layer. But it increased south of 64°20'S, giving a maximum of 2.6cm s^<-1> at 300-400m in depth, while the surface velocity is 0.3cm s^<-1>. |
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| ISSN: | 0085-7289 2432-079X |