ENVIRONMENT OF DEEP OCEAN TEST SITES (NOMINAL DEPTH, 2000 FEET) LATITUDE 33 DEGREES 46 MIN N, LONGITUDE 120 DEGREES 37 MIN W.
Summary for period ending Sep 64,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA
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NCEL has exposed specimens of a large number of construction materials on Submersible Test Units STU in 5300 and 5800 feet of water. The purpose is to determine what materials are most suitable to withstand the effects of this environment. The environmental factors considered significant are presented. The sea water at these sites is uncontaminated and normal for this part of the Pacific Ocean. The particular depth at which the STUs are located places them in an environment with a relatively low dissolved oxygen concentration. In this area, the oxygen minimum zone is located at a depth between 1800 and 2800 feet with dissolved oxygen values as low as 0.20 milliliters per liter. Measurements averaging from 1.26 to 1.50 milliliters of dissolved oxygen per liter of sea water, 2.53 to 2.40 C for temperature, and 34.56 to 34.59 parts per thousand for salinity were obtained from the near bottom waters at these two depths 5300 and 5800 feet. Author