Ekman Transport and Zooplankton Concentration in the North Pacific Ocean

1967 ◽  
Vol 24 (3) ◽  
pp. 581-594 ◽  
Author(s):  
W. Percy Wickett

Annual concentrations of zooplankton off California varied directly, and concentrations in the western Bering Sea varied indirectly with calculated southerly components of Ekman transport in the previous year at 50°N,140°W. This point is in the area in which surface subarctic water and the deeper currents divide north and south. The underlying geostrophic flow requires approximately 1 year to reach each downstream sampling area. Summer concentrations of zooplankton at Ocean Station P, 50°N,145°W, varied with southerly and westerly components at 50°N,160°W during the previous winter. Fifty to sixty per cent of the variance of the annual concentration in zooplankton appears to be due to advection of surface water.

Polar Science ◽  
2019 ◽  
Vol 21 ◽  
pp. 228-232 ◽  
Author(s):  
Yuichiro Kumamoto ◽  
Michio Aoyama ◽  
Yasunori Hamajima ◽  
Shigeto Nishino ◽  
Akihiko Murata ◽  
...  

2009 ◽  
Vol 75 (2) ◽  
pp. 359-367 ◽  
Author(s):  
Shogo Moriya ◽  
Shunpei Sato ◽  
Moongeun Yoon ◽  
Tomonori Azumaya ◽  
Shigehiko Urawa ◽  
...  

1974 ◽  
Vol 31 (3) ◽  
pp. 363-366 ◽  
Author(s):  
S. J. Westrheim ◽  
V. A. Snytko

Length–weight relations for Pacific ocean perch (Sebastes alutus) were determined by the iterative method from data collected aboard Soviet research vessels in the North Pacific Ocean, from Kamchatka, USSR (53°N lat), to Oregon, USA (44°N lat). Interarea values of a (in W = aLb) ranged from 0.0076028 (females, E Bering Sea) to 0.054000 (females, W Bering Sea); and b, from 2.6345 (females, W Bering Sea) to 3.1694 (females, E Bering Sea). Empirical tests indicated that individual area formulae generally produced acceptable calculated weights. Interarea comparisons of calculated weights provided additional evidence of the existence of discrete stocks and two subspecies of Pacific ocean perch in the North Pacific Ocean.


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