Water,
Journal Year:
2022,
Volume and Issue:
14(9), P. 1333 - 1333
Published: April 20, 2022
Setiu
Lagoon
experienced
shoreline
alterations,
leading
to
the
opening
of
a
new
inlet
and
closing
old
one.
To
evaluate
effects
these
alterations
on
tidal
flow
in
this
shallow
narrow
lagoon,
numerical
hydrodynamic
model
was
developed.
The
model-predicted
water
level
current
velocities
were
validated
against
field
measurements,
which
yielded
high
simulation
skill.
transport
particles
residence
time
under
different
configurations
also
investigated
through
implementation
tracers
released
from
R1,
R2,
R3,
represent
pollution
sources.
results
indicated
that
particle
varied
spatially
temporally
depending
release
locations,
proximity
inlet,
strength.
Comparing
scenarios,
flushing
efficiency
improved
with
presence
both
inlets,
resulting
shorter
less
than
50
days.
findings
research
are
vital
for
understanding
restricted
while
evaluating
possible
adverse
its
quality.
Although
work
is
case-study
based,
output
applicable
other
lagoon
systems
similar
characteristics.
The Science of The Total Environment,
Journal Year:
2020,
Volume and Issue:
735, P. 139481 - 139481
Published: May 16, 2020
Terrestrially-derived
dissolved
organic
carbon
(DOC)
and
nitrogen
(DON)
transported
by
rivers
have
been
recognised
as
contributors
to
aquatic
nutrient
burdens,
can
be
of
importance
in
estuaries
already
impacted
anthropogenic
inorganic
discharges.
The
concentration
DOC
DON
the
flux
both
estuary
ultimately
coastal
zone
is
dependent
upon
many
factors
including
rainfall,
catchment
land
use,
biological
processes.
concentrations
together
with
nitrate
plus
nitrite
ammonium
were
measured
anthropogenically-impacted
Christchurch
Harbour
(UK)
at
sites
lower
reaches
its
two
source
rivers,
Hampshire
Avon
Stour,
weekly
intervals
for
a
year
during
which
time
several
extreme
rainfall
events
occurred.
A
series
transects
along
also
performed
after
sampling
was
completed.
correlated
between
positively
related
increases
river
flow,
but
revealed
more
complicated
picture.
Peak
instantaneous
fluxes
exceeded
60,000
kg
C
d-1
7000
N
respectively
Stour
high
flow
periods.
sources
routes
they
enter
system
may
account
differences
dynamics,
flushing
superficial
soils
being
key
point
such
sewage
treatment
works
proposed
DON.
Removal
processes
within
whilst
behaved
conservatively
some
evidence
local
production
estuary.
Estimated
annual
loads
from
118
km-2
y-1
2296
y-1.
Hydrological Processes,
Journal Year:
2025,
Volume and Issue:
39(2)
Published: Feb. 1, 2025
ABSTRACT
Coastal
water
temperatures
control
physical,
chemical,
and
biological
processes
are
expected
to
rise
due
future
changes
in
freshwater
temperature
flow
rates,
heat
exchange
with
the
warming
atmosphere,
thermal
interactions
a
changing
ocean.
However,
sensitivity
of
transitional,
coastal
bodies
climate
change
remains
poorly
understood,
partly
lack
knowledge
on
present‐day
controls
these
settings.
Accordingly,
we
applied
hydrodynamic
model
(MIKE
3
FM),
coupled
module
simulate
hydrodynamics
variability
Basin
Head
lagoon,
federally
protected
ecosystem
Canadian
province
Prince
Edward
Island.
Field
data
from
lagoon
were
used
calibrate
assess
numerical
model,
while
atmospheric,
oceanic,
hydrologic
form
boundary
conditions.
The
successfully
reproduced
tidal
level
oscillations
as
well
diurnal
semi‐diurnal
(tidal)
fluctuations.
Model
results
show
longitudinal,
cross‐shore,
vertical
within
including
pronounced
near
bed
inlet
pumping.
field
highlight
during
waves;
however,
distinct
cold‐water
plumes
at
inputs
(springs
groundwater‐dominated
streams)
persisted,
temporally
averaged
zones
up
18
°C
colder
than
ambient
lagoon.
Although,
inflows
can
dominate
local
energy
budgets,
surface
fluxes,
especially
shortwave
radiation,
exert
dominant
lagoon‐wide
budget.
Collectively,
findings
emphasise
interacting
effects
hydrologic,
oceanic
forcing
spatiotemporal
patterns
this
threatened
ecosystem.
Water,
Journal Year:
2025,
Volume and Issue:
17(5), P. 693 - 693
Published: Feb. 27, 2025
Coastal
waters,
particularly
in
micro-tidal
estuaries,
are
highly
vulnerable
to
water
quality
changes
driven
by
salinity
intrusion.
Effective
coastal
management
requires
a
detailed
understanding
of
the
dynamic
processes
estuaries
mitigate
effects
This
study
focuses
on
Brisbane
River
estuary
(BRE),
Australia,
investigate
intrusion
and
flushing
time
under
varying
freshwater
inflows.
A
coupled
MIKE
21
FM
hydrodynamic
(HD)
transport
(TR)
model
was
used
assess
during
neap–spring
tidal
cycle.
The
2D
calibrated
validated
for
2008
2011
flow
events
using
field
data
levels
salinity.
Results
show
an
increase
amplitude
landward
low
river
conditions,
while
damping
observed
higher
discharge,
reducing
BRE
spring
tides.
found
that
is
sensitive
availability,
with
discharges
150
m3/s
175
identified
as
critical
thresholds
maintain
below
1
PSU
at
mouth
ebb
flood
tides,
respectively.
Flushing
analysis
indicates
takes
approximately
302
h
completely
displace
saline
when
discharge
optimized
m3/s.
Modifying
mouth—through
channel
widening
or
deepening—enhanced
process,
significantly
levels.
demonstrates
optimizing
modifying
can
provide
effective
solutions
managing
estuaries.
ACS ES&T Water,
Journal Year:
2022,
Volume and Issue:
3(1), P. 203 - 212
Published: Dec. 16, 2022
Due
to
the
lack
of
regular
monitoring
networks
and
practical
assessment
criteria
for
contaminants
emerging
concern
in
rivers,
it
is
challenging
quantify
influences
human
activities
on
their
occurrence
ecological
impacts
estuarine
environment.
To
address
this
issue,
herein,
organophosphate
esters
(OPEs)
were
selected
tested
Pearl
River
Estuary
(PRE),
which
an
urban
estuary
surrounded
by
a
megalopolis
(the
Greater
Bay
Area)
South
China.
A
field-based
investigation
was
conducted
riverine
outlets
PRE
considering
tidal
seasonal
variations
coupled
with
models
improve
human-derived
stress
estuary.
The
results
indicated
that
OPEs
strongly
influenced
emissions
from
land-based
sources
hydrological
conditions
minor
biogeochemical
processes.
Approximately
45,200
kg
year–1
∑12OPE
discharged
eight
major
2020–2021.
Tributyl
phosphate
tris(2-chloroethyl)
highest
environmental
index
are
two
priority
OPEs,
necessitating
further
control
measures
present
study
demonstrates
urbanized
face
greater
lower
resilience
OPE
pollution
than
other
less-urbanized
outlets.
