An inexpensive method for calibrating an infrared analyzer
to measure varying ranges of carbon dioxide partial pressures
(Pco₂) is described. A discussion is made of the hydrographic (temperature,
salinity, and sigma-t) and chemical (dissolved oxygen, AOU, Pco₂
pH, and nutrients) variables that were observed along the Newport
hydrographic line in March and June 1971. A winter storm in late
March led to an inshore feature of doming isolines. Indications of
early seasonal upwelling and photosynthesis were also observed.
June conditions were characterized by a deteriorated upwelling
regime and an inshore phytoplankton bloom. The Columbia River
plume was also driven abnormally close (65 kilometers) to shore by
southwesterly winds.
Chemical variables as observed in the Columbia and
Willamette Rivers in June, 1971 are compared to data from a study
made in December, 1968. A large gradient in Pco₂ and temperature
is observed in the Willamette River approximately 3.5 kilometers
upstream from the confluence in June, but not in December. This
observation is related to the seasonal flow patterns of the two rivers.
Chemical variables in the Columbia River are influenced by seasonal
phytoplankton activity, but oxidation of organic matter is the predominating
factor in the Willamette River. Pco₂ values calculated
from pH and alkalinity measurements agreed to ± 5 percent with
directly measured Pco₂ values in the Columbia River. / Graduation date: 1973
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28382 |
| Date | 01 December 1972 |
| Creators | Kantz, Kent William |
| Contributors | Smith, Robert L. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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