Tsunami death toll Indonesia94,081 Sri Lanka28,729 India9,067 Thailand4,993 Somalia200 Myanmar90 Maldives80 Malaysia68 Tanzania10 Bangladesh December 26, 2004 Indonesian Tsunami
Cross-section of a tsunami
History of tsunamis
Earthquake Epicenter and Areas Affected
3. Tsunamis a. Tsunami means “harbor wave” in Japanese. b. It is caused by an earthquake under the ocean. 1)May travel up to 800 km/hr in open ocean 2) Height in ocean very short; maybe 1 meter 3) Wave lengths often 100 km 4) Wave period 5 minutes to 1 hour apart 5) Height at shore may be 40 meters 6) Usually occur in Ring-of-Fire countries
How Tsunamis are Produced
India’s last active volcano in the Andaman Islands erupted in response to the earthquake on December 26, 2004.
Location of Andaman Islands
About 400 islands, 38 inhabited Islands are peaks of submerged mountain range Indian territory, area of 8,249 sq km Population around 370,000, about 100,000 in Port Blair Number of tribes, including Jarawas, Onges and Shompens
Following are pictures from the 9.0 earthquake that occurred off the coast of Sumatra on December 26, The tsunami that was produced traveled at mph across the ocean, and created waves of 10 meters at shore. Was the largest earthquake in the past 40 years Many were unaware of the oncoming Tsunami 155,000 fatalities, 500,000 injured and $10 Billion in damages, with 5 million either losing home or access to food and water
Devastation from tsunami caused by massive earthquake. Wave was 10 meters high, and moving about 30 miles/hr. when it hit the shore. Mariana Beach, Madras, India
India
Velankanni, India
Hikkaduwa, Sri Lanka
Groundwater level hydrograph from the Aurora Observation well showing seismically--induced water level fluctuations.
Hikkaduwa, Sri Lanka
Patong Beach, India
Data from USGS
This fishing boat landed on the main street of Banda Aceh several miles from the sea.
#4 is the 12/26/04 earthquake off of Sumatra
After the water receded
Damage to Shoreline
Before and After
IKONOS Photo
Another Before and After
When Tsunami Hit
Damaged Home in Thailand
Deadly Disasters
Debris in Indonesia
Damaged Trawlers
Destroyed Homes
Picture from Above the Tsumani
IKONOS Before and After
Looking for Belongings
More Before and After
More Damage
Remains of Fishing Colony
Damage in Somalia
Damage in Sumatra
IKONOS Before and After
Remains of Trawler
End of Sumatra earthquake that occurred on December 26, 2004.
Japanese boats left high and dry by tsunami
Sightseers in Japan looking at tsunami wave Many probably regret it !!!
Timber driven through tire by force of tsunami
Tsunami wave on coast of Japan
Damage to island of Hilo, Hawaii by tsunami
P and S Waves Inside the Earth
A Week’s Worth of Earthquakes
Banda Aceh Grand Mosque June 23, 2004 DigitalGlobe
Banda Aceh Grand Mosque December 28, 2004 DigitalGlobe
Kalutara Beach, Sri Lanka Prior to Tsunami DigitalGlobe
Kalutara Beach, Sri Lanka, with Tsunami Waters Receding DigitalGlobe
Kalutara Beach, Sri Lanka, Prior to Tsunami DigitalGlobe
Kalutara Beach, Sri Lanka, After Tsunami DigitalGlobe
End of Powerpoint. Additional slides follow.
Earthquakes greater than M-2.5 over 7 days
Thrust Fault and Fold