. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 10 - • 2. STATIONS 20- • 73 30- • f± FERREL 2 SEPT. 16-20, 1973 Figure Vertical distribution of total suspended load in mg/liter. The cross section extends south from Long Island. The distribution, showing high values near the surface and very high values near the sea floor3 is typical of shelf areas. The near bottom turbid layer has been termed the "nepheloid layer" and it is expected that this layer will contain and transport much
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 10 - • 2. STATIONS 20- • 73 30- • f± FERREL 2 SEPT. 16-20, 1973 Figure Vertical distribution of total suspended load in mg/liter. The cross section extends south from Long Island. The distribution, showing high values near the surface and very high values near the sea floor3 is typical of shelf areas. The near bottom turbid layer has been termed the "nepheloid layer" and it is expected that this layer will contain and transport much of the New York Bight contaminants. Suspended particulate matter is stratified in response to this den- sity layering. Three layers typically present nearshore (fig. ) are a turbid surface layer, a relatively clear mid-water zone located within or below the shallow pycnocline, and a turbid layer near the sea floor, resulting from wave resuspension of bottom materials. Further seaward the surface turbid layer becomes less distinct as the shallow pycnocline breaks down. The small maxima at the surface in the offshore parts of the area can be attributed to plankton production. However, the signifi- cant near-bottom increase in suspended particulate matter appears to be a permanent feature of all portions of the Bight apex. The near bottom ash content of this material ranges between 40 and 84 percent of the total weight, and most of this material is probably resuspended inorganic clay and silt. By late November of 1973, surface water cooling, convective mixing, and the effects of increasingly frequent storms had produced a nearly homogeneous surface layer ranging from 10 to 30 m in thickness (fig. ) The vertical distribution of suspended particulate matter reflected the weak or no stratification, with essentially uniform concentrations from the surface to the top of the bottom turbid layer at many stations. Dur- ing the period of stratification, throughout the period
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