Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots
Marine Environmental Research,
Journal Year:
2024,
Volume and Issue:
200, P. 106654 - 106654
Published: July 22, 2024
The
influence
of
floating
marine
debris
(FMD)
on
coastal
and
communities
ecosystems
is
undeniable,
attention
increasingly
focused
ecologically
biologically
important
areas.
To
protect
life
valuable
resources
from
FMD
pollution,
identifying
accumulation
zones
recognized
as
a
priority.
One
the
ocean
processes
found
governing
distribution
water
convergence
(frontal
zones).
These
fronts
are
driven
by
various
oceanographical
factors.
date,
transport
in
relation
to
areas
poorly
understood.
address
this
knowledge
gap,
we
reviewed
types
well
along
frontal
defined
region
between
coastline
shelf
break.
Frontogenesis
(physical
related
formation)
were
alongside
studies
identify
physical
factors
that
drive
pathways
these
This
review
will
contribute
our
understanding
hotspots
within
gaps
for
further
research
developing
proxy
hotspot
identification
Journal of Marine Science and Engineering,
Journal Year:
2025,
Volume and Issue:
13(2), P. 341 - 341
Published: Feb. 13, 2025
The
water
quality
in
port
domains
is
highly
dependent
on
the
capacity
for
renewal
and
mixing
with
external
water.
This
study
uses
Lagrangian
modelling
to
investigate
time
Barcelona,
Tarragona,
Gijón
harbours
(Spain),
which
represent
semi-enclosed
micro-tidal
meso-tidal
environments.
For
this
purpose,
different
particle-tracking
simulations
have
been
carried
out
each
of
ports
trends
circulation
both
surface
layer
at
bottom.
results
indicate
that
microtidal
Mediterranean
ports,
longer
bottom
(32
days
Barcelona
61
Tarragona).
Conversely,
mesotidal
Gijón,
located
Cantabrian
coast,
opposite
pattern
observed,
higher
times
(14
days).
While
from
exhibit
magnitudes
comparable
situ
measurements
previous
studies,
it
remains
essential
evaluate
specific
characteristics
method
compare
these
findings
other
similar
works.
Frontiers in Marine Science,
Journal Year:
2024,
Volume and Issue:
11
Published: June 18, 2024
The
threat
of
anthropogenic
marine
litter,
particularly
plastic
pollution,
to
ecosystems
and
human
health,
has
spurred
mitigation
initiatives
global
scientific
research.
Following
the
Marine
Strategy
Framework
Directive
guidelines,
this
study
evaluated
litter
distribution,
cleanliness,
pollution
indices
along
Bulgarian
Black
Sea
beaches
in
2023.
survey
integrates
visual
assessment,
manual
sampling,
drone
mapping,
distributing
coastline
encompass
a
broader
range,
totaling
45,
including
28
remote/natural,
10
semi-urban,
7
urban
beaches.
Results
indicate
48%
decrease
distribution
on
from
1462
±
147
items/100
m
2021
753
97
2023,
with
Artificial
polymer
materials/plastic
materials
constituting
88.62%
total
amount.
A
comprehensive
macro
assessment
was
carried
out
using
PAI
for
first
time.
In
average
cleanliness
status
classified
as
“
moderate
”
(CCI:
7.61
1.00),
clean
northern
central
contrasting
dirty
southern
Urbanized
were
assessed
highest
level
(PAI
AV,23
:
5.51;
CCI
18.16).
long
term,
maintain
values
AV,18-23
8.81
0.89,
2.35
0.32,
persisting
throughout
period,
necessitating
ongoing
monitoring
intervention
strategies.
Despite
identifying
significant
number
beaches,
none
meet
EU
threshold
value
20
m.
This
highlights
urgent
need
effective
interventions
combat
accumulation
or
semi-urban
emphasizing
multi-stakeholder
collaboration
sustainable
solutions
coastal
ecosystem
preservation.
Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots
Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots
Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots
Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots
Abstract.
The
transport
mechanisms
of
floating
marine
debris
in
coastal
zones
remain
poorly
understood,
primarily
due
to
the
complex
geometry
and
influence
processes
which
pose
difficulties
incorporating
them
into
Lagrangian
numerical
models
at
scales.
model
presented
this
study
addresses
these
challenges
using
nested
grids
varying
hydrodynamic
resolutions
(2.5
km,
350
m,
70
m).
couples
Eulerian
data
with
a
particle
solver
accurately
simulate
motion
plastic
particles
regions.
A
validation
was
conducted
drifter
assess
model’s
skill
confidence
simulation
predictions.
results
demonstrated
high
stability
72-hour
forecast
horizons
score
values
close
shoreline.
Additionally,
beaching
sensitivity
analysis
performed
determine
parameterisations
suitable
for
zones.
This
that
real-time
distance
shore
during
simulations
most
accurate
method
detecting
land-water
boundary
scales,
representing
residence
times
spatiotemporal
patterns.
Simulations
were
single
coarse
grid,
both
same
input
from
river
outflows
pilot
test
Barcelona
coastline
morphology
structures,
two
major
mouths,
large
harbour.
revealed
marked
differences
amounts
times.
Both
exhibited
levels
beaching,
grid
registering
91.5
%
low-resolution
showing
95.8
surpassing
other
studies
larger
Beaching
variability
within
demarcated
areas
between
simulations,
highest
flux
observed
near
Llobregat
River
mouth
release
point.
inner
port
area
showed
have
18
longer
when
high-resolution
data,
demonstrating
ability
solve
geometrical
structures.
By
grids,
can
resolve
potential
accumulation
litter
hot-spots