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Technology
Assessment & Research (TA&R) Program
| Project
Number |
86 |
| Date of Summary |
September 30, 1985 |
| Subject |
ATOS (Antiturbidity Overflow
System) Experiment |
| Performing Activity |
Shin Nihon Kisho Kaiyou Co. |
| Principal Investigator |
Dr. Michael Cruickshank, U.S. Geological & Survey |
| Contracting Agency |
U.S. Department of State, Tokyo
Embassy |
| Estimated Completion |
Complete |
| Description |
This was a joint experiment
between the Minerals Management Service and the National Research Institute for Pollution
and Resources, Ministry of International Trade and Industry, Japan. The project was
performed with the support of the Marine Mining Panel of the U.S./Japan Cooperative
Program in Natural Resources (UJNR). The subject experiment is the evaluation of a
Japanese patented technique for controlling and reducing surface turbidity and sediment
dispersion associated with hopper dredge mining operations. The technique ATOS
(Antiturbidity Overflow System) prevents air from being entrained in water which is
overboarded after the dredged sand and silt are brought to the surface. The modified
dredge is owned by the Japanese Government. |
| Progress |
Complete. Results of the
experiments indicate that, although the patented technique does not reduce the suspended
sediment, it speeds the resettlement of suspended materials. |
| Reports |
AA (110 pages)
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Data Report from an Experiment to
Measure the Dispersion of a Hopper Dredge Discharge Plume at Kanmon Channel, Japan, Marine
Mining Panel, The United States/Japan Cooperative Program in Natural Resources, 1984. |
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