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?