. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography FERREL 2 SEP 16-20, 1973 Fig. 9. Vertical distribution of total suspended load (in mg/liter) seaward of Long Beach, Long Island. (From D. E. Drake unpublished.) apex (Charnell and Hansen 1974). Part of the total suspended load in the bight apex is easily identifiable, red-orange ferric hydrox- ide particles. These particles are formed by precipitation of iron in seawater as the re- sult of acid waste dumping. They consti- tute an excellent tracer of
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography FERREL 2 SEP 16-20, 1973 Fig. 9. Vertical distribution of total suspended load (in mg/liter) seaward of Long Beach, Long Island. (From D. E. Drake unpublished.) apex (Charnell and Hansen 1974). Part of the total suspended load in the bight apex is easily identifiable, red-orange ferric hydrox- ide particles. These particles are formed by precipitation of iron in seawater as the re- sult of acid waste dumping. They consti- tute an excellent tracer of suspended sedi- ment circulation. The vertical distribution of suspended sediment shows high values ( mg/liter) near the surface, and mg/ liter in the near-bottom "nepheloid" layer, typical of shelf areas (Fig. 9). It is expected that this layer will transport much of the suspended particulate matter and its asso- ciated contaminants. CtNEDALIZEO FINE SEDIMtNl T8ANSPQ8T FALL 1973. — 40*20'N Fig. 10. Fine sediment transport system as in- ferred from distribution of suspended sediments during fall 1973. Dashed line is mean position of boundary between more turbid coastal water and less turbid offshore water. Clockwise gyre is ap- parently driven by southwesterly drift of offshore shelf water, and, on the bottom, by influx of saline water into New York Harbor. Regional currents which appear to be persistent are indicated by solid arrows. ( From Drake 1974.) Preliminary results show there is a con- centration of fine-grained sediment in en- closed lows in the Hudson Valley axis, sandy mud in the remainder of the valley axis, and coarser sediment up the flanks of the valley and onto the shelf. Alternative dumping area studies Two midshelf areas have been designated as possible interim alternative dumping areas for sewage sludge and dredge spoils from the New York metropolitan area (see Fig. 1). The northern area is to be a mini- mum of 46 km from the Long Island
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