. Current, temperature, tide, and ice growth measurements, eastern Bering Strait-Cape Prince of Wales : 1953-55. Oceanography; Oceanography; Ocean currents. electric potential measurements The possibility of measuring tidally generated potentials in bays and through ocean channels has been considered and discussed by numerous investi- gators/'" The method has been employed in the study of mass water transport between Key West and Havana, and the average mass transport of the Florida Current for the period of August 1952 to August 1954 has been reported by Wertheim.^'' Electric potentials
. Current, temperature, tide, and ice growth measurements, eastern Bering Strait-Cape Prince of Wales : 1953-55. Oceanography; Oceanography; Ocean currents. electric potential measurements The possibility of measuring tidally generated potentials in bays and through ocean channels has been considered and discussed by numerous investi- gators/'" The method has been employed in the study of mass water transport between Key West and Havana, and the average mass transport of the Florida Current for the period of August 1952 to August 1954 has been reported by Wertheim.^'' Electric potentials were initially measured in the Bering Strait in 1949.*^ Continuation of these studies in 1951-1952 yielded only sketchy results, primarily because of installation problems associated with maintaining electrode-cable systems in an area sub- ject to ocean freezing and ice movement. Obviously, the most desirable procedure for measuring potentials and for studying their relation to water transport involves installation of electrodes on opposite banks of a channel. Since this technique cannot be followed in the Bering Strait, electrodes were bottom-laid, perpendicular to flow, near the eastern side of the Strait and connected to shore recording equipment by appropriate signal links (fig. 6). (A complete description of electrode systems and electrode construction has been given in refer- ence 1.) Edge effects of potential gradients extending inland have been recorded using land electrode systems laid perpendicular and parallel to flow. Young, Gerrard, and Jevons^ considered the effect of potential gradients on a set of moored elec- trodes near one shore of a broad channel and demonstrated that the potential gradient ei where vi is the observed velocity in the experimental area exhibits the following relation (sea bottom-conduct- ing): ei = —Vvi s -j- Csp (electromagnetic units) where V = earth's vertical field (gauss) Vi = water velocity (cm/sec) s = length of water filament (cm) C
Size: 834px × 2998px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectoceancurrents, booksubjectoceanograp
