New Zealand Journal of Marine and Freshwater Research abstracts
Influence of along-shore advection and upwelling on coastal temperature at
Kaikoura Peninsula, New Zealand
STEPHEN M. CHISWELL
National Institute of Water & Atmospheric
Research Ltd
P. O. Box 14 901
Wellington, New Zealand
email: s.chiswell@niwa.cri.nz
DAVID R. SCHIEL
Marine Ecology Research Group
Zoology Department
University of Canterbury
Private Bag 4800
Christchurch, New Zealand
Abstract Thermistor data from around Kaikoura Peninsula, New
Zealand, show that in the synoptic band, temperature fluctuations at 1 m
are coherent with the along-shore wind with a 90deg. phase difference. At
5 m, however, the coherence is not as high, and the phase relationship is
in the opposite sense. Along this coast, wind-driven advection of the coastal
current and upwelling have opposite effects on temperature. A simple model is
developed which has along-shore advection and upwelling terms parameterised in
terms of the wind and two unknown coefficients. Solving for the coefficients
shows that at 1 m, temperature variability is determined by along-shore
advection, whereas at 5 m, temperature variability is determined
principally by upwelling.
Keywords oceanography; temperature; coastal communities;
upwelling
M99070
Received 22 November 1999; accepted 28 August 2000
New Zealand Journal of Marine and Freshwater Research, 2001, Vol. 35:
307-317
0028-8330/01/3502-0307 $7.00 (c) The Royal Society of New Zealand
2001
PDF file of entire paper: medium quality (728K); (scanned from paper original: notes about this process)
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