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Costal Inlets Research Program
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> Figure 6-7. Goldsmith Pond water-level measurements and calculations by CEA model
Goldsmith Inlet channel cross-sectional area stability
Figure 6-8. Escoffier curve calculated for Goldsmith Inlet, CEA model
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Figure
6-7
plots
the
measured
water
level
and
water
level
as calculated
with
the
CEA
model
for
Goldsmith
Inlet.
The
CEA
model
cannot reproduce the
asymmetry of the observed
signal
(as
discussed
in Chapter
4).
The
model
can
still
give
an
estimate
of
stable
channel
cross-sectional
area
if the
amplitudes
correspond in the
calibration
.
4
___
Calculated
Goldsmith
Pond
Water
Level
- - -
Measured
3
2
1
0
-1
-2
-3
-4
1200
2400
1200
1200
2400
5
October
6
October
7
October
2002
GMT
Figure
6-7.
Goldsmith
Pond
water-level
measurements
and
calculations
by
CEA
model
Figure
6-8
shows
the calculated
maximum
velocity
curve
and the calculated
equilibrium
velocity
curve
for
Goldsmith
Inlet.
The
empirical
relation
for
small
inlets
developed
by
Byrne
et
al.
(1980)
predicts an
equilibrium
cross-sectional
area
of
109
sq ft
for
Goldsmith
Inlet,
and
their
empirical
equation
with
the
CEA
Escoffier
analysis
gives
a
stable
channel
cross
section of
114
sq
ft.
These
calculations
are
close
to
value
of the
minimum
channel
cross-sectional
area
of
80 sq ft
obtained
from
the October
2002
survey.
Figure
6-9
plots
the
tidal
prism
and channel
area
relation
for
Goldsmith
Inlet
with
data
of the
inlets
studied
by
Byrne
et
al.
(1980)
and Simpson
(1976).
The
Goldsmith
Inlet
data
points
conforms
well
with
the
trend
of the
small
Chesapeake
Bay
inlets.
The
two
Puget Sound
inlets
studied
by Simpson
(1976),
Lagoon
Point
Inlet
and
Hancock
Lake
Inlet,
are
included
because
they
are
similar
to
Goldsmith
Inlet
in
being
small,
gravelly
inlets.
The
inlets
studied
by Simpson
(1976)
were
not
protected by
jetties.
280
Chapter
6
Inlet
Morphology
and
Stability
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