The document discusses tsunami and the tsunami warning system (TWS), explaining that a tsunami is a series of long ocean waves primarily caused by underwater earthquakes. It details the components of TWS, including seismic monitoring stations and communication infrastructure, which work together to detect tsunamis and issue warnings. The TWS offers early warnings and operates continuously, helping to prevent loss of life and damage from tsunamis.

1. TSUNAMI WARNING SYSTEM
PRESENTED BY –
UDIT KR DIXIT
KHARAGPUR

2. OBJECTIVES
Upon the completion of this lesson, you will be
able to Know :-
 What is Tsunami
 About tsunami warning system(TWS)
 Types and working of TWS
 Advantages of TWS

3. TSUNAMI
 The word Tsunami is a Japanese word
meaning “harbor waves”.
 A tsunami is a series of traveling ocean waves
of extremely long length
 It generated by disturbance associated by
primarily with earthquakes occurring below or
near the ocean floor.

4. TSUNAMI WARNING SYSTEM
 A tsunami warning system is used to detect
tsunami in advance and issue warning to prevent
loss of life and damage.
 This system consist of two main parts.
TWS
NETWORK OF SENSORS
COMMUNICATION
INFRASTRUCTURE

5. WORKING OF TWS
 Network of seismic monitoring station at sea
floor detects presence of earthquake.
 Seismic monitoring station determines location
and depth of earthquake having potential to
cause tsunami.
 Any resulting tsunami are verified by sea level
monitoring station such as DART buoys, tidal
gauge.

6. WORKING OF TWS

7. TRANSMITTER BUOY

8. TYPES OF TWS
 There are two distinct types of tws
TWS
Regional warning
system
International warning
system

9. ADVANTAGE OF TWS
 Can be used to provide early warnings of
tsunamis
 It has always been in operation in the ocean.
 Enabling emergency messages to be sent to
the emergency services and forces.
 Continuously monitors and confirms tsunami
waves following an earthquake

10. REVIEW
 What is Tsunami
 About tsunami warning system(tws)
 Types and working of Tws
 Advantage of tws

11. EVALUATION
 How many types of tsunami warning system ?
 Ans :- 02 types
 The word tsunami taken from ?
 Ans :- “Harbor Waves” , a Japanese word.

12. ANY QUESTION ?