NATURAL DISASTERS
CONNECTED WITH WATER
by Group 4
Tsunami
• A tsunami, also known as a seismic sea wave or as a tidal wave, is a
series of waves in a body of water caused b...
Storm
• A storm is any disturbed state of an environment or
astronomical body's atmosphere especially affecting its surfac...
Flood
• A flood is an overflow of water that submerges land which is usually
dry. The European Union (EU) Floods Directive...
Natural disasters Group4
Natural disasters Group4
Natural disasters Group4
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Natural disasters Group4

Published on: Mar 3, 2016
Published in: Education      
Source: www.slideshare.net


Transcripts - Natural disasters Group4

  • 1. NATURAL DISASTERS CONNECTED WITH WATER by Group 4
  • 2. Tsunami • A tsunami, also known as a seismic sea wave or as a tidal wave, is a series of waves in a body of water caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. In being generated by the displacement of water, a tsunami contrasts both with a normal ocean wave generated by wind and with tides, which are generated by the gravitational pull of the Moon and the Sun on bodies of water.
  • 3. Storm • A storm is any disturbed state of an environment or astronomical body's atmosphere especially affecting its surface, and strongly implying severe weather. Storms generally lead to negative impacts on lives and property such as storm surge, heavy rain or snow (causing flooding or road impassibility), lightning, wildfires, and vertical wind shear; however, systems with significant rainfall can alleviate drought in places they move through.
  • 4. Flood • A flood is an overflow of water that submerges land which is usually dry. The European Union (EU) Floods Directive defines a flood as a covering by water of land not normally covered by water. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Flooding may occur as an overflow of water from water bodies, such as a river or lake, in which the water overtops or breaks levees, resulting in some of that water escaping its usual boundaries, or it may occur due to an accumulation of rainwater on saturated ground in an areal flood. While the size of a lake or other body of water will vary with seasonal changes in precipitation and snow melt, these changes in size are unlikely to be considered significant unless they flood property or drown domestic animals.