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Tsunami!
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What happened & why

2. 2004 Indian Ocean Earthquake
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•Magnit ude 9. 0
( M me n t
o
ma g n i t u d e
s c al e )
NOAA

3. Epicenter 150 KM west of Sumatra
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http://en.wikipedia.org/wiki/2004_Indian_Ocean_earthquake

4. Occurred along the subduction
zone where the Indian dives
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under the Eurasian
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http://www.nps.gov/prsf/geology/images/plates.gif

5. Facts
• The eart hquake came j ust t hree
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days –af t er level magnit ude 8. 1
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a
eart hquakelevel an uninhabit ed region
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west of New levelealand
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• Possible connect ion bet ween t hese
t wo eart hquakes
• Possibilit y of a seismic chain
react ion across neighboring plat es
has also been considered

6. Facts
• Tot al energy released by a
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magnitSecond level eart hquake exceeds
–
ude 9. 0
t he t ot•al amount of energy
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consumed Fourthtlevel U. S . in one mont h
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• Massive release of energy and
shif t in mass insignif icant ly alt ered
t he Eart h' s rot at ion

7. A tsunami (pronounced soo-
NAA-mee) is a series of waves
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–(called a "wave train")
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generated level a body of water
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by a pulsating or abrupt
disturbance that vertically
displaces the water column.

8. Tsunami's are also mistakenly
referred to as tidal waves as they
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oftenSecond level a tide that keeps
– resemble
rising,• ratherlevel
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when they» reach shore. However,
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as they are not actually related to
tides the term may be misleading,
and its use is discouraged by
scientists.

9. Tsunamis are
creat ed when:
• styles
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displaced
•Waves are
f ormed as t he
displaced wat er
mass, which is
Anthony Liekens 15:30, 28 Dec 2004 (UTC) af f ect ed

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11. Characteristics
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• Move at high speeds
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• Can t • Third level level
ravel enormous dist ances
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energy loss
• Can cause damage t housands of
miles f rom it s origin
• May be several hours bet ween
it s creat ion and it s impact on
t he coast

12. Warning Systems
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count edit
around– tSecond level
he
Pacif ic, including
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Hawaii, have» Fifth level
warning syst ems
and evacuat ion
procedures in
t he event of a
serious t sunami.

13. Effects of Tsunamis
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• Dest ructlevel of human lif e
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( 100, 000+)level
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• Dest ruct ion of propert y
• S pread of disease
• Dest ruct ion of ecosyst ems

14. • Click to edit Master text styles
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http://msnbc.msn.com/id/6770108/

15. • Click to edit Master text styles
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http://msnbc.msn.com/id/6770108/

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http://home.cfl.rr.com/battleshipron/before_after.gif

17. Review
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18. Thank You & Have a nice Day
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