Bees provide critical pollination services to diverse agricultural crops, native plants and trees. Globally, there are reports of bee declines which have been attributed to diseases, exposure to pesticides and changes in land use that are believed to have led to a reduction in foraging resources and nesting habitats for...
Sea level and current data collected near Newport, Oregon are
compared to determine an empirical relationship from which the low
frequency (f < .1 cpd) alongshore current field over the continental
shelf is estimated from observed sea level measurements at the coast.
Regression analysis of the near-surface (20-25 m) currents...
Sea level and the alongshore component of wind stress data at
seven locations on the Pacific coast of Canada and the United States
were analyzed. The effective data period was from August 1, 1973 to
September 9, 1975. The seven locations were Tofino, British
Columbia; Neah Bay and Toke Point,...
Nearly three months of current meter records from five moorings off
the Oregon coast taken between October 1977 and January 1978 were analyzed
for near-inertial motions. The moorings were located from the midshelf
out to the foot of the continental slope, spanning the continental
margin. All but two of the...
A long and gradual transition between the summer and winter
oceanic regimes was observed off Oregon during the autumn of 1980.
Hydrographic sections and a single current meter mooring between
August and December show the ocean possessed characteristics during
fall that have not been observed during other seasons: a slow...
Observations of sea temperature, wind and hydrography obtained
during the three months' period of MAM 77 - CUEA experiment (JOINT-II)
along the C-line, near 15°S are described. Wind and temperature
observations made during March - May 1977 are compared to demonstrate
that a relationship exists.
Linear correlation analysis was performed...
Simulations of stream-subsurface water exchange (hyporheic exchange) using a three-dimensional steady state groundwater flow model and a particle tracking model in unconstrained and constrained reaches of small (2nd-order) and intermediate (5th-order) mountain streams were conducted to estimate the effects of geomorphic features on the extent, volume and residence time of...
This thesis demonstrates that at low frequencies (periods longer
than 2.5 days) local currents off the coast of Oregon are closely
related to the wind. Wind and current observations made during
August and September 1969 are described and compared to demonstrate
that a relationship exists; the physics of the interaction...