| 释义 |
ˈnepheloid, a.
[f. Gr. νεϕέλ-η + -oid.]
1. Of urine: Cloudy, nebulous. (Cassell 1886.) rare—0.
2. Of the ocean: chiefly in nepheloid layer, a layer about a kilometre thick in the deep water of the western North Atlantic and elsewhere that is turbid owing to suspended mineral matter.
1965Ewing & Thorndike in Science 12 Mar. 1291/1 Strong background haze in some of our ocean bottom photographs has been difficult to explain by any cause other than clouded (nepheloid) water. Ibid. 1291/2 The degree to which the water is nepheloid. Ibid. 1291/3 A sample of 200 liters obtained from the nepheloid layer was found..to contain some organisms and about 0·50 g of suspended lutite. 1972Ettreim & Ewing in A. L. Gordon Stud. Physical Oceanogr. II. 123 The turbulence associated with the vigorous bottom currents of the western North Atlantic maintains a nepheloid layer with an average thickness of one kilometer. 1974Nature 6 Sept. 43/2 The thickness of this nepheloid layer is several orders of magnitude greater than the characteristic thickness of the turbulent Ekman layer at the ocean floor. |