Seasonal data on tides, water quality and sediments in the
Siuslaw Estuary were collected. Tide and velocity data were analyzed
to evaluate damping conditions in the estuary. The system was found
to approximate a weakly damped standing wave. A strong relationship
of damping conditions to river flow was observed. The...
During 1973 data was collected to analyze the seasonal variations of the tidal dynamics, water quality and sediments of the Alsea
Estuary. A summary of historical information with a list of all
known alterations to the estuary was made. A complete physical
description, including the geographical setting and mixing classification...
The overriding goal of this study was to provide first order estimates of dilution and tidal flushing of waste discharges released hypothetically into various Oregon estuaries during critical low flows and tides. Causal relationships between discharged wastes and subsequent estuarine response were studied. Various approaches to determine the assimilative capacity...
The hazards associated with tsunamis are well known and have been studied for decades. The majority of research is, however, focused on open coastlines which bear the brunt of a tsunamis force. Other regions that can be strongly impacted by a tsunami are large estuaries. Here, the tsunami encounters a...
Waters of various salinities were secured from the Umpqua
estuary, the Umpqua River, and the open ocean near the mouth of the
estuary. The rate of oxidation of sulfides in these various waters
was investigated to assess the potential longevity of free sulfides in
estuarine waters.
The rate of disappearance...
A digital computer model was developed to simulate the time
and space distribution of a dissolved pollutant in an estuary. The program
is basically a one-dimensional finite-difference model, but two
dimensions can be represented by attaching together several one-dimensional
channels. The influence of convection, dispersion and
decay are included in...
At the present time only a portion of Corvallis is sewered and a portion of the city still employs the most crude and unhealthful methods of disposal. The district east of Ninth Street, as shown on the map, has an effective system of well constructed sewers, of the combined storm-water...
This research examines the downstream fining phenomenon as it operates in coastal gravel-bed rivers of Oregon. Downstream fining is a change in bed composition toward smaller sediment sizes in the downstream direction. Changes in stream flow discharge and channel slope affect the rate of bed-load transport, thereby altering the downstream...
A one-dimensional, implicit, finite-difference model is
developed, calibrated and verified for three estuaries along
the central Oregon coast. The model is used to generate controlled
data for a large number of hypothetical estuaries.
Two non-dimensional coefficients, K[subscript F], and. K[subscript I], are developed
incorporating physical characteristics of the estuary which...
The stochastic and the Fourier theories for sand waves developed
by Lee(11) and Hino(6), respectively, for unidirectional flows are
extended in order to estimate the rate of sediment turnover (RST) under
oscillatory flows in the South Slough estuary, Coos Bay, Oregon. Data
were collected by a mechanical and a sonic...