2. About the earthquakes
● Magnitude was 7.8
● It was east 161 kilometers
○ Centered of Raoul Island
○ Some 920 kilometers south of Tonga
● Its epicenter was at a depth of 20 kilometers
3. About the earthquakes (2)
● Tsunamis warning
○ The Kwemadec Islands
○ New Zealand
○ The Pacific nation of Tonga
● It announced PTWC
○ PTWC - Pacfic Tsunami Warning Center
4. About PTWC
● Invested by NOAA
● Announces tasunamis warning
● It is no mistake
○ Tsunamis moved ocean take a long time
○ It has a thinking time because of this
● It used DART system
5. About 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
6. About Kermadec Islands
● Location
○ North-northeast 1000 kilometers from New
Zealand
● Type
○ Volcanic islands
○ New Zealand territory
● The biggest island is Raoul Island
7. About Raoul Island
● There are many cliffs
● There are coral reefs around sea
● Its volcano is fertile
○ This name is Raoul mountain
○ This altitude is 516 meters
8. Conclusion
● The earthquake
○ East 161 kilometers of Raoul Island
○ Magnitude was 7.8
○ Epicenter was at a depth of 20 kilometers
● Raoul Island
○ North-northeast 1000 kilometers from New
Zealand
○ Volcanic island
○ New Zealand territory
