Observations from an instrument array moored over the continental
shelf off Oregon from 31 July to 21 September 1969 are presented. Temperature,
current and wind observations were obtained every 20 minutes.
First order statistics, histograms, progressive vector diagrams and time
series plots are presented. Supplementary wind observations at Newport
are...
A summary of one phase of a direct observational program conducted
in the coastal region off Oregon is presented. The measurements
were made primarily on the continental shelf during most of the coastal
upwelling season (May and June 1967; April through September 1968).
The principal measurements were time series of...
Small pelagic fish represent a critical trophic link between plankton and large predators in marine upwelling ecosystems such as the California Current System. Populations of these fish are highly variable over time and are characterized by extreme fluctuations in abundance, which have significant ecosystem impacts. The causes driving
this instability...
Euphausia pacifica, the North Pacific krill, is a key grazer in the California Current System and an important prey item for consumers such as salmon, seabirds, and whales. As a crucial link between phytoplankton and higher trophic levels, it is essential to understand both the behavior and bioenergetics of this...
Wind-driven coastal upwelling brings subsurface water onto the central-Oregon shelf after the spring transition each year. This cold and salty source water is oxygen-poor, yet above the hypoxic threshold, dissolved oxygen < 1.4 ml l⁻¹. Once on the shelf, dissolved oxygen (DO) concentrations of upwelled near-bottom waters are modified by...
A summary of one phase of a direct observational program conducted
in the coastal region off Oregon is presented. The measurements were
made primarily on the continental shelf in late coastal upwelling season
(August and September 1966). The principal measurements were time
series of horizontal current velocity and temperature fields;...
This is the first data report of a program designed to study physical
processes in Oregon shelf waters by means of moored instrument arrays.
Various statistics and plots of smoothed data are presented for time
series of current velocity and of temperature. Data were collected in
July, August, September, and...
Various methods of presenting and mathematically describing particle
size distribution are explained and evaluated. The hyperbolic
distribution is found to be the most practical but the more complex
characteristic vector analysis is the most sensitive to changes in
the shape of the particle size distributions.
Particle size distribution, nutrient concentrations,...
CTD observations of temperature and salinity were made off Oregon and California between 34° N and 44° N from the R/V Wecoma, 5 Feb. - 17 Feb. 1981. The stations were from 2-360 km off shore, in water depths ranging from 30 to 4,300 meters. The maximum sampling depth at...