scholarly journals A subsurface pathway for low potential vorticity transport from the central North Pacific toward Taiwan Island

2007 ◽  
Vol 34 (12) ◽  
Author(s):  
Qinyu Liu ◽  
Haibo Hu
Keyword(s):  
Potential Vorticity ◽  
North Pacific ◽  
Taiwan Island ◽  
Vorticity Transport ◽  
Central North Pacific

scholarly journals Potential vorticity transport in weakly and strongly magnetized plasmas

2021 ◽  
Vol 28 (4) ◽  
pp. 042301
Author(s):  
Chang-Chun Chen ◽  
Patrick H. Diamond ◽  
Rameswar Singh ◽  
Steven M. Tobias
Keyword(s):  
Potential Vorticity ◽  
Magnetized Plasmas ◽  
Vorticity Transport

Growth and spatiotemporal distribution of juvenile shortfin mako (Isurus oxyrinchus) in the western and central North Pacific

2015 ◽  
Vol 66 (12) ◽  
pp. 1176 ◽  
Author(s):  
M. Kai ◽  
K. Shiozaki ◽  
S. Ohshimo ◽  
K. Yokawa
Keyword(s):  
North Pacific ◽  
Linear Models ◽  
North Pacific Ocean ◽  
Age Groups ◽  
Growth Curves ◽  
Growth Function ◽  
Gaussian Mixture ◽  
Isurus Oxyrinchus ◽  
Shortfin Mako ◽  
Central North Pacific

This paper presents an estimation of growth curves and spatiotemporal distributions of juvenile shortfin mako shark (Isurus oxyrinchus) in the western and central North Pacific Ocean using port sampling data collected from 2005 to 2013. The monthly length compositions show a clear transition of three modes in the size range of smaller than 150-cm precaudal length (PCL), which were believed to represent the growth of age-0 to age-2 classes, and they were then decomposed into age groups by fitting a Gaussian mixture distribution. Simulation data of lengths at monthly ages were generated from the mean and standard deviation of each distribution, and fit with a von Bertalanffy growth function. Parameters of the estimated growth curves for males and females were 274.4 and 239.4cm PCL for the asymptotic length and 0.19 and 0.25 year–1 for the growth coefficient indicating apparently faster growth than previously reported. Generalised linear models were applied to age-0 to explore the seasonal changes of PCL by area. They were born during late autumn and winter off the coast of north-eastern Japan, an area known to have relatively high productivity compared with other pelagic areas, and gradually expanded their habitat eastward and northward with the seasons as they grew.

Lagrangian statistics in the central North Pacific

2001 ◽  
Vol 29 (1-4) ◽  
pp. 141-155 ◽  
Author(s):  
Rick Lumpkin ◽  
Pierre Flament
Keyword(s):  
North Pacific ◽  
Lagrangian Statistics ◽  
Central North Pacific
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