1 / 11

Tsunami and Tidal Waves

Tsunami and Tidal Waves. By Matt Sapp & Lauren Gareau . Wading in Water. Tsunami, commonly known as Tidal Waves come from the Japanese word Tsu for (harbor) Nami for (Wave)

Lucy
Download Presentation

Tsunami and Tidal Waves

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tsunami and Tidal Waves By Matt Sapp & Lauren Gareau

  2. Wading in Water • Tsunami, commonly known as Tidal Waves come from the Japanese word Tsu for (harbor) Nami for (Wave) • All oceans can have tsunami’s but 80% of Tsunami’s originate in the Pacific Ocean due to large amounts of geological activity • From Japan to the West Coast of South America, tsunami’s strike with devastating consequences

  3. All Washed Up • A tsunami is a series of waves in a body of water that vertically displaces the water column • Oceanographers often refer to tsunami’s as seismic sea waves as a result of a rise or fall of the earths crust • The displacement can be caused by earthquakes, landslides, volcanic eruptions, and meteorites • All but meteorites occur under the sea • Tsunami’s are most likely to occur in April

  4. Turning the Tide • Tsunami’s can go undetected until it reaches shallow waters • Some vary from 30ft to 100ft • Tsunami’s move a the speeds approaching jet aircraft • Tsunami’s are able to be detected but the size and destructive force of them can not be predicted • The ability to detect them gives the population a chance to get cover

  5. A Wave is a Wave? • The difference between a tsunami and wave is that waves you see at the beach are generated by wind • Waves depend on the strength of the wind and the wavelengths (distance between crest/trough) is from 5ft to 1000ft • Waves moves at about 5 to 60 mph

  6. A Wave is A Wave Cont • Tsunami’s result from physical mechanisms • The magnitude of a tsunami is by the mechanism • The difference between wavelengths can range from 100-300 miles apart • Depending on depth tsunami’s can travel up to 500 mph

  7. That’s No Tsunami • Common misconceptions come regarding tsunami’s appearance but it all depends on the topography of the ocean floor • The increase in height occurs as the tsunami gets closer to land • Most think tsunami’s are large steep waves this is not always the case • Most tsunami’s appear as an advancing tide • The result is the rapid flooding of the low-lying coastal areas

  8. That’s a big Momma • The largest tsunami occurred in Lituya Bay on the southern coast of Alaska • On July 9, 1958 a earthquake caused a glacier landslide at the head of the bay • It triggered a wave that was 1720ft/524m high • This is the equivalent of over 5 football fields • This is the case of a tsunami where no people were present but this possible • Up to 36,000 people have died in a tsunami and the following flooding that occurs (Krakatoa, Indonesia 1883)

  9. A tsunami can reach the shore of any country regardless of where it starts in about a day and if local, it can reach in minutes A tsunami is more than just a single wave like an earthquakes aftershocks, tsunamis are a wave train and many people have lost their lives returning home thinking it was safe Danger Watch Yourself

  10. Crazy Pics

  11. Questions • 1. What is a Tsunami? • 2. What is the ranging height for Tsunamis? • 3. What is the difference between a Tsunami and a wave? • 4. Where and when did the largest Tsunami occur? • 5. How long does it take for a Tsunami to occur?

More Related