1. Tsunamis: More Than a Splash Presentation By: Ka’ai Young, Ellie Goodrich, Geri Trower, & Ivan Maurer PHYSICS 1010

2.  A Tsunami is a disastrous wave caused by a disruption on the Seafloor  Tsunami is derived from a Japanese word meaning, ‘harbor wave’: tsu, which means harbor, nami, which means wave  Most tsunamis are generated by earthquakes, volcanic eruptions, landslides, and asteroids What is a Tsunami?

3.  Most tsunamis are initiated by earthquakes that occur underwater, but not all of these earthquakes will produce a tsunami  Immediately after an underwater earthquake occurs, the surface of the sea reflects the new form of the sea floor, which creates a series of waves and the start of a tsunami  http://www.pbs.org/wnet/savageeart h/animations/tsunami/main.html Development

4.  Tsunami’s usually hit in multiple large waves, not just one  Their above water height grows as they move inland  Speeds can reach hundreds of miles per hour.  http://www.edumedia- sciences.com/en/a98-tsunami  A very large tsunami can do some serious damage even when it occurs thousands of miles away from where the earthquake that caused it originated, although there has never been one recorded that has gone farther than a mile inland Movement & Size

5. Movement and Size

6.  Locally generated tsunamis have the potential to reach a nearby shore in the span of 10 minutes  Not enough time for any tsunami warning center to issue a tsunami warning Tsunami Hazards: Local Tsunami’s

7. Tsunami Hazards: Wave Propagation Disruption on the seafloor creates displacement in the water and Tsunami waves are formed Once they are formed they move in all directions away from the origin point

8.  In order for an earthquake to cause a noticeable tsunami it must have a magnitude of at least 6.75 on the Richter scale  Because of this, larger tsunamis only occur on an average of about 6 per century with ninety percent of those occurring in the Pacific Ocean  There is no way to calculate how many smaller tsunamis occur because their effects are rarely noticeable at all Tsunami Hazards: How often do they occur?

9.  Tsunamis cannot be prevented  The damage can be reduced by being rightfully prepared and educated about these monstrous waves  Tsunami walls have also been installed in many coastal communities to reduce damage Prevention

10.  Before the devastating Tsunami of 2004, we don’t have much ability to track Tsunamis  Now we can trace the following once a wave has been detected:  Height  Speed  Arrival Time  Flood potential Tracking a Tsunami

11.  Deep Ocean Assessment and Reporting of Tsunamis (D.A.R.T)  http://oceantoday.noaa.gov/ trackingtsunamis/ Warning Systems

12.  Some warning signs include:  An earthquake or volcanic eruption near a coastal community  Shaking of the ground  Receding of the ocean  Sound of loud ocean roars  A noticeable rise or fall in the shore line  An approaching wall of water Warning Signs

13.  Named by the Japanese, caused by volcanic eruptions, earthquakes, landslides, and asteroids  Created by sudden events that displaces the sea floor, which then causes the sea to compensate for that displacement of water  Not noticeable until it reaches closer to shore  Multiple waves; first wave isn’t always the most dangerous  Locally generated waves are dangerous  Natural phenomenon, cannot be prevented  Deep Ocean Assessment and Reporting of Tsunamis (D.A.R.T)  Receding of the ocean is one major sign Review