Tsunamis-5 Causes, 3 Hazards & 3 Prediction YouTube Lecture Handouts
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
TSUNAMIS
-
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
𝐾𝐸→𝑃𝐸

Image of Deep Water and Shallow Water
Image of Deep Water And Shallow Water
Measurement
-
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
Causes

Image of Causes of Tsunamis
Image of Causes of Tsunamis
Hazards
-
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
-
Prediction or forecast is a statement about an uncertain event.
-
It is often, but not always.
-
Based upon experience or knowledge.
-Manishika