Numerical investigation of the influence of coastal structure removal on sand spit morphology
Applied Ocean Research,
Год журнала:
2025,
Номер
158, С. 104560 - 104560
Опубликована: Апрель 14, 2025
Язык: Английский
Monitoring and Forecasting of Coastal Erosion in the Context of Climate Change in Saint Louis (Senegal)
Geographies,
Год журнала:
2024,
Номер
4(2), С. 287 - 303
Опубликована: Апрель 28, 2024
Owing
to
its
unique
physical
and
socio-economic
characteristics,
the
Saint
Louis
region
stands
out
as
one
of
most
susceptible
areas
in
Senegal
adverse
impacts
coastal
erosion.
The
dynamics
erosion
this
are
significantly
influenced
by
Langue
de
Barbarie
(LB),
a
sand
spit
formed
at
mouth
River.
Initially,
2003,
4
m
wide
artificial
breach
was
strategically
introduced
mitigate
flooding;
however,
sediment
expanded
it
6
km
2020,
thereby
affecting
entire
region.
This
study
delves
into
coastline
change
LB,
specifically
divided
three
zones
(LB-1,
LB-2,
LB-3),
spanning
period
from
1994
2042.
Leveraging
Geographic
Information
System
(GIS)
remote
sensing
techniques,
our
investigation
reveals
that,
prior
breach’s
creation,
average
dynamic
rates
LB-1,
LB-3
were
estimated
4.4,
5.9,
4.4
m/year,
respectively.
Subsequent
breach,
these
shifted
−1.2,
8.4,
−2.7
with
significant
observed
alongshore
−6.6
m/year
during
2002–2012.
Projecting
2032,
LB-1
anticipated
experience
−11.5
−26.8
respectively,
while
LB-2
records
an
accretion
rate
8.41
m/year.
Eroded
expected
total
571,458
m2,
accumulated
67,191
m2.
By
2042,
−23
−53.6
resulting
1,021,963
m2
accumulation
94,930
168.2
zone
LB-3.
These
results
have
implications
for
solving
urgent
issue
LB.
Язык: Английский
Sandy shoreline recovery ability after breakwater removal
Frontiers in Marine Science,
Год журнала:
2023,
Номер
10
Опубликована: Май 17, 2023
The
removal
of
coastal
structures
has
emerged
as
an
increasingly
considered
alternative
nature-based
solution
to
sandy
erosion
due
unsuited
structure
construction.
However,
its
effectiveness
remains
uncertain
because
the
ability
natural
beach
recovery
is
unclear
little
understanding
shoreline
response
removal.
In
this
study,
we
use
a
recently
developed
numerical
model
explore
after
attached
breakwater.
Both
duration
and
ratio
are
analyzed
concerning
various
breakwater
configurations
environmental
settings
in
simplified
generalized
framework.
We
find
that
naturally
recover
but
with
different
durations
(years
centuries)
ratios
(full
partial).
A
higher
(i.e.,
shorter
larger
ratio)
related
effective
length,
downdrift
inclined
direction,
lower
angle
wave
incidence,
greater
longshore
sediment
transport
rate.
reveal
behavior
sand
spit
evolution,
including
extension
split
spit,
dominant
mechanism
for
distinct
processes.
Two
simple
formulas
finally
proposed
preliminarily
estimate
practical
purposes.
results
present
study
provide
new
insights
into
morphological
resilience
engineering
interventions.
Язык: Английский
Satellite-Derived Shoreline Changes of an Urban Beach and Their Relationship to Coastal Engineering
Remote Sensing,
Год журнала:
2024,
Номер
16(13), С. 2469 - 2469
Опубликована: Июль 5, 2024
Urban
beaches,
oscillating
between
development
and
protection,
are
more
frequently
strongly
affected
by
human
activities;
therefore,
comprehensive
detailed
studies
of
the
geomorphological
evolution
urban
beaches
coastal
engineering
imperative.
Based
on
769
satellite
images
from
1986
to
2023,
this
study
employed
a
transect-focused
approach
investigate
historical
shoreline
change
Haikou
Beach,
an
beach
with
three
nearby
offshore
artificial
islands.
The
satellite-derived
mean
water
line
positions
have
temporal
resolution
41
days
before
2014
9
after
2018,
random
error
4.9
m,
ranking
among
state-of-the-art
in
field.
This
revealed
that
constructions
Pearl
Island
Millennium
as
well
five
nourishment
projects
mainly
exerted
positive
impact
Beach.
Island’s
wave
shadow
area
may
form
tombolo
hundred
years.
In
context
heightened
development,
leveraging
existing
large
future
larger
archives
imagery
analyze
complex
changes
helps
mitigate
absence
field
data,
aiding
targeted
erosion
protection
remediation
strategies
scientific,
engineering,
societal
significance.
Язык: Английский
Analysis of wave shoaling and shore-breakers on a low tide terrace beach based on in-situ measurements at Xisha Bay on South China coast
Acta Oceanologica Sinica,
Год журнала:
2023,
Номер
42(7), С. 175 - 184
Опубликована: Июль 1, 2023
Язык: Английский
Evolution of a Sand Spit in Ujeon Tidal Flat: A Case Study from South Korea
Опубликована: Янв. 1, 2024
Download
This
Paper
Open
PDF
in
Browser
Add
to
My
Library
Share:
Permalink
Using
these
links
will
ensure
access
this
page
indefinitely
Copy
URL
DOI
Язык: Английский
Shoreline Behavior in Response to Coastal Structures: A Case Study in Haikou Bay, China
Water,
Год журнала:
2024,
Номер
16(21), С. 3106 - 3106
Опубликована: Окт. 30, 2024
The
rapid
development
of
coastal
structures
on
sandy
coastlines
raises
concerns
about
their
impacts
the
shoreline’s
evolution
and
sediment
transport
dynamics.
This
study
utilized
a
numerical
modeling
approach
to
simulate
multi-year
response
Haikou
Bay’s
coastline
various
nearshore
structures,
including
piers
large
artificial
island.
LITLINE
module
MIKE21
(v2020)
software
was
employed
analyze
patterns
across
three
distinct
segments.
simulation
results
indicated
that
directions
varied
significantly:
from
west
east
in
western
segment,
middle
convergence
toward
center
eastern
divided
by
construction
trestle.
net
rates
were
quantified
as
2000
m3/year
for
8000
13,000
(west)
10,000
(east)
segment.
Due
conflicting
each
side
breakwater,
noticeable
deposition
occurred
both
sides.
presence
island
created
notable
its
wave
shadow
area,
while
overall
impact
shoreline
changes
diminished
over
time.
These
findings
underscore
significant
influence
human
activities,
particularly
natural
shorelines.
Язык: Английский
Impacts of Anthropogenic Structures on Coastal Morphodynamics: A Case Study of Sand Spit Evolution in the Ujeon Tidal Flat, South Korea
Ocean Science Journal,
Год журнала:
2024,
Номер
59(4)
Опубликована: Ноя. 1, 2024
Язык: Английский
Global Distribution and Morphodynamic Patterns of Paired Spits Developed at the Mouths of Interdistributary Bays of Deltas and within Coastal Channels
Remote Sensing,
Год журнала:
2023,
Номер
15(11), С. 2713 - 2713
Опубликована: Май 23, 2023
Previously,
paired
spits
have
been
described
at
the
mouths
of
bays,
estuaries,
and
deltas.
This
study
analyzed
worldwide
distribution
morphodynamic
patterns
located
interdistributary
bays
deltas
(three
systems)
within
coastal
channels
(24
systems).
The
methodology
was
based
on
detailed
analysis
satellite
images,
nautical
charts,
tidal-range
databases.
found
were
mainly
microtidal
coasts
high
or
mid
latitudes.
Waves
main
factor
controlling
convergent
progradation
breaching
spits,
while
hydraulic
blockage
for
development
these
due
to
tide-induced
currents,
as
well
minor
fluvial
outlets
in
bays.
Three
identified:
(i)
stable,
with
low
rates,
generally
without
degradation
any
spits;
(ii)
stationary,
alternating
formation
new
closure
breaches;
(iii)
instable
ephemeral,
which
included
three
subtypes,
severe
erosion
one
both
joining
head
two
forming
a
single
barrier,
merging
each
its
channel
margin.
Язык: Английский