TERRAPUB Journal of Oceanography

Journal of Oceanography, Vol. 59 (No. 5), pp. 629-635, 2003

Short Contribution

Seasonal and Spatial Variations of Iceberg Drift off Dronning Maud Land, Antarctica, Detected by Satellite Scatterometers

Shigeru Aoki*

The Graduate University for Advanced Studies (SOKENDAI), Center for Antarctic Environment Monitoring, National Institute of Polar Research, Kaga, Itabashi-ku, Tokyo 173-8515, Japan

(Received 8 September 2002; in revised form 17 December 2002; accepted 29 January 2003)

Abstract: Seasonal and spatial variations of iceberg drift were studied using continuous satellite scatterometer images off Dronning Maud Land, East Antarctica. Generally, iceberg drift speed showed a westward increase to the Greenwich Meridian. Seasonal variations of the drift speed were high in autumn-early winter and low in spring, and their magnitudes also increased westward. Seasonal variations of the drift speed were significantly correlated with variations of sea levels at Syowa and Mawson Stations, and hence qualitatively consistent with geostrophic current variations. Thus, the scatterometer data are demonstrated to be useful in monitoring iceberg trajectory and oceanic current variations.

*E-mail: shigeru@lowtem.hokudai.ac.jp

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