Models of cross shelf transport introduced by the Lofoten Maelstrom
The drift of particles released in the tidal current (Moskstraumen) near Lofotodden, located at 671500N; 121500E; has been studied. The periodical tidal current combined with a background current is found to introduce a transport between Vestfjorden inside Lofotodden and the shelf outside. This part...
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Format: | Text |
Language: | English |
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2000
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.6047 http://folk.uio.no/bjorng/moskstraumen/bilder/csr_atle.pdf |
Summary: | The drift of particles released in the tidal current (Moskstraumen) near Lofotodden, located at 671500N; 121500E; has been studied. The periodical tidal current combined with a background current is found to introduce a transport between Vestfjorden inside Lofotodden and the shelf outside. This particular transport may be important for the drift of cod eggs, larvae and other important biological and chemical tracers. A fine-resolution numerical model provided the Eulerian tidal current field based on which the particle trajectories are calculated using a Lagrangian particle tracking technique. The tracking algorithm was extended by a random-walk method to simulate small scale turbulence. An idealized current model of the area is also developed for use as a simplification tool to reveal the basic mechanisms of the drift and to demonstrate the sensibility of time stepping in numerical integration.r 2002 Elsevier Science Ltd. All rights reserved. |
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