. SEPT OCT NOV DEC JAN FEB MAR APR MAY Fig. 9. The average silicate contents of the 0-100 m. layer in the southern and northern regions in the Antarctic zone of the Southern Ocean. results at all stations within 200 miles of the ice-edge and the other, the curve for the northern region, from observations at all stations within 300 miles south of the Antarctic convergence. The two curves are shown in Fig. 9. We have no results for June and July, so that the seasonal curves are not quite complete. The following features of the southern curve are worthy of notice. A steep fall occurs from 1 Septe
. SEPT OCT NOV DEC JAN FEB MAR APR MAY Fig. 9. The average silicate contents of the 0-100 m. layer in the southern and northern regions in the Antarctic zone of the Southern Ocean. results at all stations within 200 miles of the ice-edge and the other, the curve for the northern region, from observations at all stations within 300 miles south of the Antarctic convergence. The two curves are shown in Fig. 9. We have no results for June and July, so that the seasonal curves are not quite complete. The following features of the southern curve are worthy of notice. A steep fall occurs from 1 September to 1 November, followed by a steep rise from 1 November to 1 February, after which during February the rise is less pronounced; in March a fall occurs, but in April the rise begins again. 5-2
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