disasters in bangladesh.ppt

WELCOME TO MY PRESENTATION

Submitted to

Md. Abdus Sattar

Lecturer

Dept. of Disaster Resilience

and Engineering

Faculty of Disaster Management,

Patuakhali Science and Technology University

MAJOR DISASTERS IN BANGLADESH AND ITS IMPACTS

Submitted byMd.Rabiul Islam

ID No.1306005

Level-1,semesrer-2

Faculty of Disaster Management

Disaster

Flood

Cyclone

River Erosion

Earthquake

Bangladesh is one of the most

disaster-prone countries in the

world, suffering from regular floods, cyclones,

earthquakes and drought. It is

estimated that in the past 20 years, 135 million people in

Bangladesh have been

affected by natural disasters,

and while many have lost their lives or been injured,

millions of others have also

lost their homes, land and

livelihoods

Water logging

Drought

fFloodfd

Cyclone Storm surge, salinity

Bank erosion

Hazards Bangladesh faces

Bank Erosion

FLOOD

Causes of Flood in Bangladesh :Rainfall

Snow melting in the Himalayas

Hydrologic changes in the Brahmaputra

basin.

Besides, 2.4 billion tons of sediments carries

by the river system of Bangladesh every

year reduces the carrying capacity of the

rivers ,which worsens the flood.

CYCLONE

About 20% of the coastal

area of Bangladesh are

vulnerable to Cyclone. In

Bangladesh,12 coastal

districts are highly

vulnerable.

DISTRICTS

VULNERABLE

TO

CYCLONE

EARTHQUAKE-Trembling or shaking movement of the earth

surface.

-Form of energy of wave motion, which

originates in a limitted region and then

spreads out in all directions from the source of disturbance

-Bangladesh is extremely vulnerable to

seismic activities.-Chittagong,Dhaka,Sylhet and Rangpur-

Dinajpur districts are mejor earthquake zone.

RIVER BANK EROSION-Occers both naturally and through human impacts.

-The river erodes away the led and

bank of its channel vertically and laterally.

-makes people undone.

-causes a massive financial loss.

DROUGHT

-Inadequate rainfall causes Drought.-North-western region suffers most.

-affects not only the seasonal crops but also

the fruit bearing trees,forestry and the

environment as a whole.