. The Composition of sea-water : comparative and descriptive oceanography. Seawater -- Composition. SECT. 4] GEOGRAPHIC VARIATIONS IN PRODUCTIVITY 355 Woods Hole Oceanographic Institution. As nearly as possible the data are taken from one-degree squares of latitude and longitude, but records from the closest position available have been interpolated liberally. Data for the three southern latitudes represent mid-oceanic positions with corresponding west longitudes of approximately 35°, 38° and 31° from south to north respectively. The data for 60°N originated from the Norwegian Fisheries Invest
. The Composition of sea-water : comparative and descriptive oceanography. Seawater -- Composition. SECT. 4] GEOGRAPHIC VARIATIONS IN PRODUCTIVITY 355 Woods Hole Oceanographic Institution. As nearly as possible the data are taken from one-degree squares of latitude and longitude, but records from the closest position available have been interpolated liberally. Data for the three southern latitudes represent mid-oceanic positions with corresponding west longitudes of approximately 35°, 38° and 31° from south to north respectively. The data for 60°N originated from the Norwegian Fisheries Investigations and represents temperatures off the west coast of Norway. Such data as these do not, of course, provide a reliable index of vertical mixing, surface enrichment and other related phenomena. They do give some indication of the relative stability of the surface waters on a seasonal basis at the four different latitudes. It is clear, for example, that the euphotic zone is thermally stratified throughout the year at both 0° and 20°. At the equator,. 200 100-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.
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