Revista de la Sociedad Científica del Paraguay,
Journal Year:
2021,
Volume and Issue:
26(2), P. 54 - 76
Published: Nov. 30, 2021
In
this
paper,
we
analyze
the
distribution
of
a
non-reactive
contaminant
in
Ypacarai
Lake.
We
propose
shallow-water
model
that
considers
wind-induced
currents,
inflow
and
outflow
conditions
tributaries,
bottom
effects
due
to
lakebed.
The
hydrodynamic
is
based
on
depth-averaged
Navier-Stokes
equations
considering
wind
stresses
as
force
terms
which
are
functions
velocity.
Bed
(bottom)
stress
Manning's
equation,
lakebed
characteristics,
velocities.
transportation
modeled
by
2D
convection-diffusion
equation
taking
into
consideration
water
level.
Comparisons
between
simulation
model,
analytical
solutions,
laboratory
results
confirm
captures
complex
dynamic
phenomenology
lake.
simulations,
one
can
see
regions
with
highest
risk
accumulation
contaminants.
It
observed
effect
each
term
how
it
be
used
them
mitigate
impact
pollutants.
Water,
Journal Year:
2019,
Volume and Issue:
11(10), P. 1970 - 1970
Published: Sept. 21, 2019
The
aim
of
this
study
was
to
investigate
the
sediment
dynamics
in
largest
lagoon
Europe
(Curonian
Lagoon,
Lithuania)
through
analysis
situ
data
and
application
a
transport
model.
This
approach
allowed
identify
propagation
pathway
riverine
suspended
sediments,
map
erosion-accumulation
zones
calculate
budget
over
13-year-long
simulation.
Sampled
concentration
are
important
for
understanding
characteristics
show
that
organic
matter
plays
crucial
role
on
coastal
system.
numerical
experiments
carried
out
gave
satisfactory
results
possibility
get
holistic
view
applied
model
with
new
formula
settling
velocity
used
estimate
patterns
sediments
seasonal
spatial
distribution
whole
river–lagoon–sea
also
sensitivity
system
strong
wind
events
presence
ice.
reveal
during
extreme
storm
events,
more
than
11.4
×
106
kg
washed
Scenarios
without
ice
cover
indicate
would
have
much
higher
concentrations
winter
season
comparing
present
situation
an
long-term
(13
years)
simulation
demonstrate
average,
62%
trapped
inside
lagoon,
marked
spatially
varying
accumulation
zones.
Journal of Hydrology Regional Studies,
Journal Year:
2023,
Volume and Issue:
47, P. 101441 - 101441
Published: June 1, 2023
Algal
blooms
(ABs),
often
exacerbated
by
excess
nutrients
from
anthropogenic
activities,
can
pose
serious
risks
to
public
health,
fisheries,
and
ecosystem
structure
functions.
Lake
Okeechobee
is
located
in
southcentral
Florida
(USA),
with
a
surface
area
of
1730
km2,
it
the
largest
subtropical
lake
United
States.
This
shallow,
nutrient-rich,
subject
frequent
intense
cyanobacteria,
some
which
are
toxic.
In
this
study,
three-dimensional
(3D)
model
was
developed,
coupling
long-term
monitoring
data
complex
physical,
chemical,
ecological
processes
at
fine
spatial
(15–1000
m
horizontal
mesh
size)
temporal
(1
h)
resolution.
We
used
understand
influence
environmental
factors
nutrient
management
on
ABs
dynamics
Okeechobee.
The
showed
that
mostly
developed
shallow
nearshore
regions
near
canal
outlets,
then
spread
over
as
result
prevailing
winds
currents.
Hypothetical
scenario
modeling
reducing
both
nitrogen
phosphorus
inputs
50%–75%
would
be
more
effective
than
targeting
single
nutrient.
could
tool
assess
effectiveness
different
strategies
its
watershed,
while
framework
adopted
other
large
water
bodies
facing
similar
issues.
Canadian Water Resources Journal / Revue canadienne des ressources hydriques,
Journal Year:
2016,
Volume and Issue:
42(1), P. 70 - 87
Published: Aug. 10, 2016
Stormwater
ponds,
including
dry
wet
ponds
and
constructed
wetlands,
have
been
widely
used
for
sediment
removal
from
stormwater
runoff.
In
this
paper,
mechanisms,
modelling
approaches
optimization
of
design
are
reviewed
discussed.
The
settling
velocity
discrete
particles
is
introduced
compared.
Settling
distribution
should
be
characterized
individual
sites
the
most
cost-effective
new
ponds.
Different
methods
estimating
trap
efficiency
then
summarized,
empirical
models
theoretical
models.
transport
method
also
Optimization
pond
improved
described,
with
many
key
factors
taken
into
account
such
as
residence
time,
vegetation,
wind,
turbulence,
stratification,
inflow
outflow.
A
high
system
hydraulic
can
achieved
through
proper
shape
pond,
length-to-width
ratio,
baffling,
depth,
location
inlets,
outlets
vegetation.
Finally,
various
issues
associated
typical
numerical
in
This
review
paper
intends
to
provide
a
state-of-the-art
point
direction
optimizations.
Lakes & Reservoirs Science Policy and Management for Sustainable Use,
Journal Year:
2019,
Volume and Issue:
24(2), P. 162 - 172
Published: June 1, 2019
Abstract
Although
surface
waterbodies
are
water
sources
for
socio‐economic
activities
and
ecosystems,
their
functions
threatened
by
sedimentation.
Sedimentation
of
lakes
reservoirs
can
result
in
a
loss
storage
capacity
altered
quality.
The
present
study
assessed
the
sedimentation
status
Lake
Naivasha,
Kenya,
based
on
sediment
distribution
accumulation
over
past
50
years,
using
Bathymetric
Survey
System
(BSS).
BSS
uses
multi‐frequency
Acoustic
Profiling
(APS)
to
map
recently
deposited
sediments.
Sediment
core
samples
were
collected
with
vibe‐
coring
device
dated.
layers
corresponding
period
20
years
identified.
cores
acoustic
images
subsequently
used
determine
thickness
within
lake.
depth
data
from
APS,
dated
processed
DepthPic
Surfer
software.
was
extracted
DepthPic,
while
volume
generated
results
indicated
that
varied
one
part
lake
another
years.
High
observed
south‐west
eastern
parts
Between
1996–2016
1966–2016
periods,
maximum
accumulated
found
be
about
0.55
1.9
m,
an
average
0.25
0.56
respectively.
mean
load
1966–1996
periods
2.78
×
10
5
4.61
t/year,
It
into
Naivasha
has
been
increasing
recent
past.
Based
study,
it
combined
use
BSS,
dating
adopted
many
thicknesses
even
where
no
prior
bathymetric
surveys
exist
comparison.
