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Costal Inlets Research Program
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> Description and Error Analysis of Field Data cont'd - TR-02-240022
Description and Error Analysis of Field Data cont'd - TR-02-240021
Model Results - TR-02-240023
TR-02-24
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K
2
tidal
constituents.
Overall
the percent
errors
in
amplitudes
range between
3.1
and
16.1
percent, the
phase
differences
range between
2.0
and
6.2
deg.
Differences
in values of
tidal
data
between the
NOS
and
IHO/NOAA
data-
bases
can
be
explained
by the
constantly
shifting
bathymetry
of
coastal
regions
and of the
geometry
of the
coasts
themselves
as
well
as by the
occurrences
of
nontidal
events.
Over
the
course
of a
few
years,
the
geometry
and
bathymetry
of
an estuary
can
change
dramatically
due to the
natural
transport of
sediments
or
through
dredging
operations,
thus
altering
the
hydrodynamics
of the
flow
in the
area.
If an
elevation
recording
station
is
located
in an
area
where the
localized
geography
is in a
perpetual
state
of
change,
there
may
be
differences
in
measured
harmonic
values
depending
on
when
the
information
was
collected.
Nontidal
events
including
wind-driven
events,
such
as hurricanes and
tropical
storms,
radiational
heating
cycles
of the
surface
waters,
and
other
natural
disturbances
can
also
perturb
observed
tidal
constituent
values
from
analysis to analysis.
The
simple
intercomparison
of the
constituent
data
is
only
an
estimate
of the
long-
term
reliability
of
this
data. It is
also
related
to the
reliability
of
shoreline
and
near
coastline
bathymetric
values.
However,
these
estimates
of
measurement
error
for
each
constituent
should
be
taken
into
consideration
when
comparing
simulated
results
to the
available
measured
data.
16
Chapter
4
Description
and
Error
Analysis
of
Field
Data
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