Tsunami
Upcoming SlideShare
Loading in...5
×
 

Tsunami

on

  • 10,278 views

Project of Ports and Harbor

Project of Ports and Harbor

Statistics

Views

Total Views
10,278
Views on SlideShare
10,277
Embed Views
1

Actions

Likes
7
Downloads
654
Comments
0

1 Embed 1

http://www.slideshare.net 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Tsunami Tsunami Presentation Transcript

  • TSUNAMI
  • # “TSU” MEANS HARBOUR AND “NAMI” MEANS WAVE.
    TSUNAMI = HARBOUR + WAVE.
    # Tsunami is a series of waves with extremely long wave length and long period generated when a body of water rapidly displace.
    # Tsunami is not a tidal wave because the tides are the result of gravitational influences of the moon, sun and planets.
    DEFINITION
  • # Earthquake
    # mass movements above or below water
    # some volcanic eruptions
    # Underwater explosions
    # Landslides
    # Large asteroid impact.
    CAUSES OF TSUNAMI
  • CHARACTERISTICS
    # Tsunamis are shallow-water waves, which means the ratio between the water depth and water length is very small.
  • # “NO WARNING!!”, “NO PREDICTIONS”
    # Earthquakes are often a cause of tsunami.
    # IF the part of tsunami to reach land is trough (draw back) rather than a crest of the wave, the water along the shoreline may recede dramatically, exposing areas that are normally always submerged.
    SIGNS OF AN APPROACHING TSUNAMIS.
  • WARNING AND PREVENTION
    # BOTTOM PRESSURE SENSORS.
    These are anchored and attached to buoys. Sensors on the equipment constantly monitor the pressure of the overlying water column.
  • GENERATION OF TSUNAMI
    Earthquake
    Water column up and down
    Potential energy
    Kinetic energy
    Tsunami
  • Initial tsunami
    Distance Local
    Height above mean sea level is the half of the original tsunami.
  • # Increases and wave length decreases.
    This result in steepening of the leading wave.
    # Deep ocean tsunami has traveled much faster than the local tsunami because of the propagation speed.
  • # Run up is a measurement of the height of the water onshore observed above a reference sea level.
    # The first run up of a tsunami is often not a largest.
  • # Tsunamis are not rare, with at least 25 tsunami occurring in the last century.
    # Many tsunamis were recorded in the Asia-Pacific region-particularly Japan.
    # The boxing day tsunami (Indian ocean tsunami) in 2004 caused approximately 350,000 deaths and many more injuries.
    TSUNAMI IN HISTORY
  • # It was an undersea earthquake.
    # Occurred on December 26, 2004 of magnitude 9.3 with an epicentre off the west cost of Sumatra, Indonesia.
    #Second deadliest earthquake of all time
    observed up to 10 minutes
    #US Geological Survey recorded the toll as 283,100 killed ,14100 missing, and 1,126,900 people displaced
    Countries affected:-Indonesia,Srilanka,Bangladesh,India,Malaysia,Myanmar,Singapore,Maldives
    2004 INDIAN OCEAN TSUNAMI
  • MALDIVES
    THAILAND
    SRI LANKA
    INDONESIA
  • EPICENTRE AT SUMATRA,INDONESIA
  • CHARECTERISTICS
    #The sudden vertical rise of the seabed during earthquake displaced massive volumes of water
    #Tsunami wave height in shallow water near coastline:-24 to 30 meter and in deep water the maximum height was 2 foot
  • Tectonic Plate
    #994 miles of fault line slipped about 50 foot along the subduction zone
    #Indian Plate slides
    under the Berma Plate
    #Energy released on the earth surface was 1.1*10^17 joules or 26.3 megatons(equivalent to 1502 times of the Hiroshima atomic bomb)
  • IMPACTS OF 2004 TSUNAMI
    -Loss of human life
    -shortage of food and drinking water
    -damage of the infrastructure
    -spreading of diseases
    -economic damage such as fishing business, tourism, shipping
    -environmental impact for many years on ground water , soil and ecosystem
  • HELPLESS AGAINST TSUNAMI!!!