Tsunamis-5 Causes, 3 Hazards & 3 Prediction YouTube Lecture Handouts

Doorsteptutor material for UGC is prepared by world's top subject experts: Get detailed illustrated notes covering entire syllabus: point-by-point for high retention.

Download PDF of This Page (Size: 220K)

Get video tutorial on: https://www.YouTube.com/c/Examrace

Watch Video Lecture on YouTube: Tsunamis - 5 Causes, 3 Hazards & 3 Prediction

Tsunamis - 5 Causes, 3 Hazards & 3 Prediction

Loading Video
Watch this video on YouTube


  • TSUNAMIS or tidal wave also known as a seismic sea wave is a series of waves in a water body.

  • Caused by the displacement of a large volume of water.

  • Generally occurs in an ocean or a large lake.

  • Speed of tsunami waves depends on ocean depth rather than the distance from the source of the wave.

  • It may travel as fast as jet planes over deep waters.

  • Only slowing down when reaching shallow waters.

Image of Tsunamis

Image of Tsunamis

Image of Wave Movement

Image of Wave Movement


Image of Deep Water And Shallow Water

Image of Deep Water and Shallow Water


  • Intensity

    • Sieberg-Ambraseys scale

    • Imamura-Iida intensity scale

    • Where is average wave height along closest coast?

  • Magnitude

ℎ is maximum tsunami-wave amplitude (in m) calculated by tide gauge at distance 𝑅 from epicenter, 𝑎, 𝑏 & 𝐷 are constants


Image of Causes of Tsunamis

Image of Causes of Tsunamis


  • It is an agent which has the potential to cause harm to a vulnerable target.

  • "Hazard" and "risk" used interchangeably.

  • Hence, in terms of risk assessment, these are two very distinct terms.

  • Classified as different types in several ways.


  • Prediction or forecast is a statement about an uncertain event.

  • It is often, but not always.

  • Based upon experience or knowledge.

Developed by: