Current observations were obtained at three locations forming
a cross section along 70°34'W longitude in Long Island Sound. Fifteen
days of data were selected from each series so that nearly
simultaneous observations were used in the analysis.
Elementary statistics were computed for the data prior to
performing a least squares tidal current analysis. Eight tidal current
constituents were fitted in two cases and nine in the remaining
instance. Constituent current ellipses were constructed along with
the average ellipses.
Using the constituents previously computed, the tidal current
was predicted for the period of observations. These values were subtracted
from the observed current, generating a residual current
series. Spectra were computed for each directional component along
with cross spectra between the north and east components and also
between corresponding components at each of the three different
locations. Coherence square and phase relationships also accompanied
the latter.
An attempt was also made to correlate wind and the residual
current by means of cross spectra. However, lack of sufficient wind
data prevented a meaningful analysis.
The natural period of oscillation of Long Island Sound was
estimated by Defant's method of seiche analysis for a bay. This
value was used in the equations for a cooscillating system and a comparison
was made between the computed and observed amplitudes of
the tide. The mean percent error for numerous locations throughout
the Sound was 7.1%. Comparison was also made between the maximum
flows computed from the above equations and some observed
values. The maximum percent error was 24% in an ebbing direction. / Graduation date: 1971
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/29500 |
| Date | 17 December 1970 |
| Creators | Swanson, R. Lawrence (Robert Lawrence), 1938- |
| Contributors | Pattullo, June G. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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