Abstract
A distinctive halo of low sea ice concentration has been observed above the Maud Rise seamount in the eastern Weddell Sea. The 300–km circular halo is seen most clearly in the monthly mean ice concentration for the months July through November. The mean was computed from satellite‐based passive microwave measurements over a 23–year period. The halo is most distinct in October; even then, however, the mean ice concentration in the halo is just 10% less than in the center, where it is very near 100%. The halo may reflect the existence of a Taylor cap circulation over the seamount or other topographically induced mechanisms.
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