Marine pastures : a by-product of large (100 megawatt or larger) floating ocean thermal power plants. Progress report, February 1, 1975--January 31, 1976

Author: Roels, O. A.
Published: United States : [publisher not identified], 1976.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1976.
Physical Description: microfiche : negative ; 11 x 15 cm
Additional Creators: Laurence, S. and Petersen, J.

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Summary

Our on-shore experimental area for primary- and secondary-producers was complete 1 November 1975. The system is built around six 2000-liter concrete tanks (''reactors''), to which deep water (from 870 m) is supplied while surface water is pumped from a shallow-water line extending 100 ft north of the beach facility in S. Croix. An experimental rack has been built which is capable of holding 90 separate test populations. Flow into reactors and experimental rack is regulated by constant-head devices. The system design provides flexibility for controlled manipulation and investigation of a wide variety of parameters at various trophic levels. Based on preliminary results of experimentation with continuous culturing of phytoplankton in mixtures of deep and surface water, we can say that a 70:30 (deep/surface) mixture is optimal for producing algal blooms which will sustain rapid growth of Tapes semidecussata in on-shore controlled growth conditions. An open-ocean structure has been designed for growing bivalves, and is anchored off-shore near the intake of the deep-water pipeline. The structure is being tested for stability, durability, and ease of handling. A second design (for non-attaching shellfish) is being built. A modified computer program has been developed to search NODC data tapes containing measurements to within 10 percent of the ocean bottom on a seasonal basis. We have computed parameters, listed and stored seasonal data, and will refine an existing program to plot T' on a Mercator projection map of the region from 17/sup 0/ to 19/sup 0/N; 64/sup 0/ to 66/sup 0/W.

Report Numbers

COO-2581-1

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: E(11-1)-2581
OSTI Identifier 7356108
Research organization: Columbia Univ., Palisades, N.Y. (USA). Lamont-Doherty Geological Observatory.

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