. Fig. 56. Distribution of phosphate (mg. ats. ). Section off Mowe Point, 9-11 October 1950, survey II. Positions of stations are shown in Fig. 2. phosphate concentration on the continental shelf is higher than that in the water which is being upwelled, and one must attribute this to further enrichment by local decomposition of organic matter on the shelf. On the Orange river line of survey II (Fig. 53) there is a divergence of phosphate-rich water towards the surface at the edge of the continental shelf. This corresponds with the diverging current which was postulated from the isosteres
. Fig. 56. Distribution of phosphate (mg. ats. ). Section off Mowe Point, 9-11 October 1950, survey II. Positions of stations are shown in Fig. 2. phosphate concentration on the continental shelf is higher than that in the water which is being upwelled, and one must attribute this to further enrichment by local decomposition of organic matter on the shelf. On the Orange river line of survey II (Fig. 53) there is a divergence of phosphate-rich water towards the surface at the edge of the continental shelf. This corresponds with the diverging current which was postulated from the isosteres on this line of stations (Fig. 37).
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