. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography Outer harbor. y "—Sandy Hook- / Rockaway Point transect Long Branch] New Jersey Sewage sludge ^ 40"30' 40"20' Bight apex limits ,0, 40"10' 0 10 20 30 0 10 15 Kilometers Nautical miles FIGURE 1. Wastewater sludge dump area in the New York Bight apex. EXPERIMENTAL METHOD On September 22, 1975, three wastewater sludge dumps and their plumes were monitored by aircraft remote sensing and by the surface vessels Kelez (NOAA) and the Onr
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography Outer harbor. y "—Sandy Hook- / Rockaway Point transect Long Branch] New Jersey Sewage sludge ^ 40"30' 40"20' Bight apex limits ,0, 40"10' 0 10 20 30 0 10 15 Kilometers Nautical miles FIGURE 1. Wastewater sludge dump area in the New York Bight apex. EXPERIMENTAL METHOD On September 22, 1975, three wastewater sludge dumps and their plumes were monitored by aircraft remote sensing and by the surface vessels Kelez (NOAA) and the Onrust (SUNY). Data from the aircraft platform were collected by a multispectral scanner, multispectral photography, and a mapping camera. The sea-truth data were obtained by water sampling and acoustic profiling (from the Kelez only) in and around the sludge plumes. In this paper, only the multispectral scanner data are considered, using the map- ping camera photography for visual location and identification of the surface features and the sea-truth measurements consisting of the concentrations of ss and chlorophyll a. The water column distributions of properties and results from acoustic investigations are pre- sented in other ;' ^^ Two dumps were made in the morning: A line dump from a moving barge, starting at about 10:46 am eastern daylight time (EDT) and ending about 11:16 am, and a spot dump from a stationary barge, which began at 11:00 AM and ended at 11:05 am (EDT). A third spot dump took place from about 2:53 pm to 2:58 (EDT). The sea-truth measurements reported here were made during and follow- ing the morning dumps. No sea-truth mea- surements were made during the afternoon dump. Sea-truth measurements. Sea-truth measure- ments made by the Kelez in the morning line dump plume consisted of 10 sets of water samples, five taken in the plume and five taken in water adjacent to the plume. These samples were subsequently analyzed in the laboratory for ss and
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