Measurements of currents close to the bottom in the deep ocean
In: Sarsia. University of Bergen. Universitetsforlaget: Bergen. ISSN 0036-4827; e-ISSN 1503-1128, meer
Ook verschenen in:Brattström, H.; Matthews, J.B.L. (Ed.) (1968). The Importance of Water Movements for Biology and Distribution of Marine Organisms: 2nd European Symposium on Marine Biology, Bergen 24-28 August 1967. European Marine Biology Symposia, 2. Sarsia, 34. 398 pp., meer
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| Trefwoorden |
Layers > Boundary layers > Benthic boundary layer
Measurement
Motion > Water motion > Water currents
Marien/Kust |
| Abstract |
Currents close to the bottom have been inferred from bottom photographs and from sand waves recorded by echo sounders. Bottom currents on the continental shelf have been measured with sea bed drifters (analogous to drift bottles for measuring surface currents). Measurements of bottom currents have also been made with current meters, and recently it has been possible to record currents for long periods. The literature and techniques are reviewed. Measurements to date suggest that strong currents (i.e., in excess of one to two-tenths of a knot) exist close to the bottom in the deep ocean in at least some areas some of the time. Details concerning the nature of the circulation are not clear, but it is possible that the deep circulation is as complex as the surface circulation. |
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