2. About tsunami warning system
● In the Indian ocean
○ Before 2004 - there were no sea level
monitoring system
■ Did not have agencies responsible for tsunamis
■ Points of contact receive messages
○ After 2004 - it was changed
3. About after 2004
● A large network of seismographic
○ Its area isacross
○ Detect potencial on warning to communities
● It and others are prepared better than 2004
4. The system works
● PTWC - Pacific Tsunami Warning Center
○ Invested by NOAA
○ It announces tsunamis warning
● JMA - Japan Meteorological Agency
○ It is in Tokyo
○ It is a institution of government in Japan
5. About PTWC
● First - it use a database of the earthquake
● Second - it use a database of oceanography
● Third - It checks a tidegauge in the
earthquake areas
● It is no mistake!
6. About PTWC (2)
● Why is it no mistake?
○ Taunamis moved ocean take a long time
○ It has a thinking time because of this
7. The DART system
● DART - Deep-ocean Assessment and
Reporting of Tsunamis
○ It is a system of PTWC
○ It tells full information about tsunamis
○ It operates continuously for two years
○ Its buoy is exchanged every year
● Tsunamis forecast and warning was very
improved for this system
