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COASTAL EROSION
M SHAHRIAR SONET
ID 16131034
Disaster & Human Security Management
Content
DEFINITION
WAYS OF COASTAL EROSION
CAUSES OF COASTAL EROSION
COASTAL EROSION IN BANGLADESH
COASTAL EROSION IN OTHERS COUNTRIES
MITIGATION
CONCLUSION
Definition
How
coastal
erosion
happen?
WAYS OF
COASTAL
EROSION
Wave Action
Corrasion
Attrition
Solution
Hydraulic action
Co
rra
sio
n
Att
ritio
n
So
lutio
n
Hy
dra
ulic
ac
tio
n
Mitigation
Natural
• 1. Sea level rise
• 2. Tidal wave
• 3. High wind
Human made
• 1. Deforestation
• 2. Transportation process in the coastal area and in the sea
Causes of Coastal Erosion
Food cycle in coastal area
Biodiversity
Degrade water quality
Displacement
Diseases & change of fishery species
Siltation
Impacts of Coastal
Erosion
Coastal Erosion in
Bangladesh
Coastal Zones of
Bangladesh
IMPACTS
IMPACTS OF COASTAL EROSION IN
BANGLADESH
o Heavy discharge through the GBM river system
o Wave action due to strong Southwest monsoon
o High astronomical tides
o Strom surges in the BOB
o Deforestation o Hill cutting activities
o Municipal/ urban wastes
COASTAL EROSION IN OTHERS COUNTRIES
o England
o Malibu
o Santa Barbara
o Malta
o Devil’s slide
Santa Barbara Fort Ricasoli in Kalkara, Malta Malibu
Devil’s Slide
Afforestation in the coastal area
Stone and boulders embankment
River water flow monitoring.
Control/proper plan & management of human
activities (Hill cutting, Deforestation, Ship breaking
etc)
Urban soil deposition and treatment
Mitigation
CONLCUSION
ANY QUESTION?
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