Pelagic Copepoda In The Bering Sea And The Northwestern North Pacific With Special Reference To Their Vertical Distribution

Author : Thomas Owen Manley
Publisher : Ann Arbor, Mich. : University Microfilms International
ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.:/5 (318 download)

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Download or read book Eddies of the Western Arctic Ocean written by Thomas Owen Manley and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1981 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the undertaking of the main 1975-76 AIDJEX experiment located in the central Beaufort Sea, four manned camps collected for one year the largest and most complete set of oceanographic data within the Arctic Ocean to this date. During this time, a total of 146 separate crossings of eddies were observed. using T-S signatures, 31 of the 146 crossings are found to represent duplicate crossings of 12 individual eddies, making a total of 127 separate eddies observed during the one year. On the basis of the AIDJEX data set, arctic eddies have been found to: (1) be prevalent in the Amerasia Basin and in particular the Beaufort Sea, (2) predominantly reside in the depth range of 50 to 300 meters although deeper eddies are also present, (3) contain more than half of the total amount of kinetic energy in the upper 200 m of the Beaufort Sea, (4) transfer kinetic energy to the mean flow, (5) be predominately anticyclonic in their rotational tendency, (6) apparently originate north of Point Barrow, Alaska as a result of instability in the eastward flowing Alaskan Coastal Current although there are a few eddies in which T-S data may indicate the possibility of local origin, (7) transfer fresher, less saline water into the deep Arctic Ocean from the Chukchi Sea, (8) transfer both warm and cold water into the deep Arctic Ocean in response to the seasonally changing shelf conditions, (9) translate in response to barotropic forcing over short time scales, although over longer time periods move with the mean geostrophic field, and (10) decay in a clockwise pattern from their point of origin, which is consistent with the upper layer movement of the Beaufort Sea.