title: Acoustic tracking of ocean-dumped sewage sludge.
abstract: With a modified 200-kilohertz acoustic echo sounder, it has been possible to detect and map sewage dumped into the ocean over several hours. The three-dimensional distribution of suspended material and its rate of diffusion are indicated after digital processing of the data.
authors.forename: J R
authors.initials: JR
authors.lastname: Proni
authors.forename: F C
authors.initials: FC
authors.lastname: Newman
authors.forename: R L
authors.initials: RL
authors.lastname: Sellers
authors.forename: C
authors.initials: C
authors.lastname: Parker