Observations of wind, currents, sea level and hydrography
obtained during the 1972 Coastal Upwelling Experiment (CUE-I) are
described. Only phenomena with periods longer than a day are considered.
One section describes the changes observed during a period
of variable winds in early July 1972. Another describes a ribbon of
relatively cool water observed early in the upwelling season and
attributes its existence to advection of Subarctic water by the coastal
jet associated with upwelling. A third section describes the seasonal
development of the upwelling regime between April and October 1972.
These studies are combined with other studies of CUE-I data to provide
a partial description of the upwelling regime which is compared
to the conceptual model developed prior to CUE-I.
It is concluded that the vertical and onshore velocity fields are
as yet largely unknown. The alongshore velocity field includes
southward surface flow with a coastal jet, a persistent vertical shear
with deeper velocities northward relative to the surface and high
coherence with the wind and sea level at periods of several days. A
poleward undercurrent is observed, but it may not be an integral part
of the upwelling regime.
The hydrography has a strong seasonal cycle. Differences
between any two sections between April and October l972 are smaller
than between any of these and a section occupied in January 1973.
Oscillations in the wind with periods of several days cause significant
changes in the region inshore of 10 km and in the upper 20 m further
offshore. Subsurface temperature observations are not coherent with
the wind at periods of several days. / Graduation date: 1974
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28749 |
| Date | 15 November 1973 |
| Creators | Huyer, Adriana, 1945- |
| Contributors | Smith, Robert L. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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