| 释义 |
turbidity|tɜːˈbɪdɪtɪ|
[ad. med.L. turbiditās (Albertus Magnus, c 1255), f. L. turbidus turbid: see -ity.]
1. = turbidness.
1782Kirwan in Phil. Trans. LXXX. 215 Dr. Priestley, in a similar experiment, did not observe this turbidity. 1845G. E. Day tr. Simon's Anim. Chem. I. 323 The serum..exhibited a remarkable milk-white turbidity. 1862Tyndall Mountaineer. iii. 25 No mist or turbidity interferes with the sharpness of the outlines. 1868Visct. Strangford Select. (1869) II. 306 A dense circumfluous atmosphere of intellectual turbidity, of ignorance, of gross superstition. 1888Rutley Rock-Forming Min. 127 Any turbidity or milkiness which a crystal may exhibit.
2. Special Comb.: turbidity current, an underwater current flowing swiftly downslope owing to the weight of sediment it carries.
1939D. W. Johnson Origin of Submarine Canyons iii. 27 By analogy those [currents] due to turbidity will here be called turbidity currents. 1950Jrnl. Geol. LVIII. 91/1 The most important types of graded bedding appear to have been produced by the action of turbidity currents of high density on the sea floor. 1977A. Hallam Planet Earth 54/2 An unusual but geologically very important type of suspension deposit is that produced by a turbidity current. |