1 / 11

Splashing into tsunamis

Splashing into tsunamis . By Lulu . Where does Tsunamis happen?. Tsunamis happen in the mid ocean ( mostly Pacific)after an Earthquakes or Volcanos Eventually the make their way to the cost lines. . How often does Tsunamis happen?. Tsunamis do not happen as often as other disasters.

nay
Télécharger la présentation

Splashing into tsunamis

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. Splashing into tsunamis By Lulu

  2. Where does Tsunamis happen? • Tsunamis happen in the mid ocean ( mostly Pacific)after an Earthquakes or Volcanos • Eventually the make their way to the cost lines.

  3. How often does Tsunamis happen? • Tsunamis do not happen as often as other disasters. • Here is a map so you can see • As you can see 1941 to 1950 were the years Tsunamis mostly happened

  4. What Features are evolved with Tsunamis? • Water and Land are the two big things Tsunamis get involved with • Earth plates are also involved with Tsunamis. • When a earth plate goes under it causes a earthquake. The earthquakes vibration causes a tsunami.

  5. What happens when a tsunami occurs? • People die. • People can get swept into the ocean really far from their home. • Pieces of wood / plastic float into the ocean from houses.

  6. What are the most extreme conditions that can happen with a tsunami? • Well obviously the most extreme condition is a lot of people die. • Also a very likely thing that will happen is it can wipe out a lot of buildings and tall structures. • Tsunamis can also cause other disasters like floods.

  7. How do we measure tsunamis? • We measure tsunamis by the Richter scale. • You also have to find the size of the wave. • Some tsunamis are measured by when the wave approaches to land ( how strong they are. ) • The deeper the water is the faster it travels

  8. What are after effects of a tsunami? • Tsunamis can cause floods • Did you also know that tsunamis can have more than one wave • The waves can rage from a few minutes to a few hours

  9. Key terms • “Familiarize yourself with these terms to help identify a tsunami hazard: • Advisory - An earthquake has occurred in the Pacific basin, which might generate a tsunami and produce strong currents or waves dangerous to those in or near the water. Coastal regions historically prone to damage due to strong currents induced by tsunamis are at the greatest risk. The threat may continue for several hours after the arrival of the initial wave, but significant widespread inundation is not expected for areas under an advisory. Appropriate actions to be taken by local officials may include closing beaches, evacuating harbors and marinas and the repositioning of ships to deep waters when there is time to safely do so. Advisories are normally updated to continue the advisory, expand/contract affected areas, upgrade to a warning or cancel the advisory. • Information - Statement An earthquake has occurred or a tsunami watch, advisory or warning was issued for another section of the ocean. In most cases, information statements are issued to indicate there is no threat of a destructive tsunami and to prevent unnecessary evacuations as the earthquake may have been felt in coastal areas. An information statement may, in appropriate situations, caution about the possibility of destructive local tsunamis. Information statements may be re-issued with additional information, though normally these messages are not updated. However, a watch, advisory or warning may be issued for the area, if necessary, after analysis and/or updated information becomes available. • Watch - A tsunami was or may have been generated, but is at least two hours travel time to the area in watch status. The watch area may be upgraded to an advisory or warning or canceled based on updated information and analysis. Therefore, emergency management officials and the public should prepare to take action. Watches are normally issued based on seismic information without confirmation that a destructive tsunami is underway. • Warning - A potential tsunami with significant widespread inundation is imminent or expected. Warnings alert the public that widespread, dangerous coastal flooding accompanied by powerful currents is possible and may continue for several hours after arrival of the initial wave. Warnings also alert emergency management officials to take action for the entire tsunami hazard zone. Appropriate actions to be taken by local officials may include the evacuation of low-lying coastal areas, and the repositioning of ships to deep waters when there is time to safely do so. Warnings may be updated, adjusted geographically, downgraded, or canceled. To provide the earliest possible alert, initial warnings are” normally based only on seismic information.

  10. Other important facts • Did you know that tsunamis can be up to 100 feet? • Did you also know that tsunamis are caused by earthquakes? • Tsunamis do not happen as often as other disasters.

  11. Sources • http://scienceblogs.com/deanscorner/2011/03/japan_tsunami_2011_more_global.php • World Book T. • Wikipedia • http://www.ready.gov/tsunamis • Google images

More Related