What is Tsunami? Write down its characteristics.

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<–2/”>a >Tsunami meaning “harbour wave” It is a series of extremely long waves caused by a large and sudden displacement of the ocean due to earthquake, volcanic eruptions etc. When they reach the coast, they can cause dangerous coastal flooding and powerful currents that can last for several hours or days.
Characters of Tsunami waves are as follows:
Tsunamis generally consist of a series of waves, with periods ranging from minutes to hours
The effect of Tsunami would occur only if the epicentre of the tremor is below oceanic waters and the magnitude is sufficiently high.
The speed of the wave in the ocean depends upon the depth of water. It is more in the shallow water than in the ocean deep. As a result of this, the impact of a tsunami is more near the coast and less over the ocean
Over deep water, the tsunami has very long wavelengths (often hundreds of kilometres long) when a tsunami enters shallow water, its wave-length gets reduced and the period remains unchanged, which increases the wave height.
Tsunamis have a small amplitude (wave height) offshore. This can range from few centimetres to over 30 m height. However, most tsunamis have less than 3 m wave height.,

A tsunami is a series of waves in a water body 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, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami.

Tsunamis can have devastating effects on coastal communities. The waves can travel at speeds of up to 800 kilometers per hour (500 mph) and can reach heights of more than 30 meters (100 feet). When a tsunami hits land, it can cause widespread flooding, destruction of property and loss of life.

The first sign of a tsunami may be a sudden withdrawal of the sea, followed by a series of large waves. If you see this, it is important to evacuate immediately to higher ground. Do not wait for an official warning to be issued.

If you are caught in a tsunami, it is important to stay calm and follow the instructions of emergency personnel. If you are able to evacuate, do so quickly and safely. If you are unable to evacuate, find a safe place to shelter in place.

After a tsunami, it is important to stay informed about the situation and follow the instructions of emergency personnel. There may be damage to your home or property, and you may need to evacuate or shelter in place. There may also be a need for medical attention or other assistance.

Here are some tips on how to prepare for a tsunami:

  • Know the tsunami risk in your area. You can find this information from your local emergency management agency.
  • Have a plan in place for what to do if a tsunami occurs. This plan should include evacuation routes and meeting places.
  • Stock up on supplies that will be needed in the event of a tsunami. This includes food, water, first-aid supplies, and other essentials.
  • Learn how to evacuate safely. This includes knowing the evacuation routes in your area and how to get to higher ground.

Here are some tips on how to survive a tsunami:

  • If you see the tsunami coming, evacuate immediately to higher ground. Do not wait for an official warning to be issued.
  • If you are caught in a tsunami, stay calm and follow the instructions of emergency personnel.
  • If you are unable to evacuate, find a safe place to shelter in place. This could be a second story of a building, a sturdy inland location, or an elevated area.
  • After a tsunami, stay informed about the situation and follow the instructions of emergency personnel. There may be damage to your home or property, and you may need to evacuate or shelter in place. There may also be a need for medical attention or other assistance.

Here are some tips on how to help after a tsunami:

  • Stay informed about the situation and follow the instructions of emergency personnel.
  • If you are able, donate to relief organizations that are helping those affected by the tsunami.
  • Volunteer your time to help with cleanup and recovery efforts.
  • Be patient and understanding with those who have been affected by the tsunami.

A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances above or below water) above or below water all have the potential to generate a tsunami.

Tsunamis can cause devastating effects when they hit land. The waves can travel at speeds of up to 800 kilometers per hour (500 mph) and can reach heights of more than 30 meters (100 feet). Tsunamis can cause widespread damage to coastal areas, including flooding, erosion, and loss of life.

There are a number of things that can be done to reduce the risk of tsunami damage. These include:

  • Building seawalls and other protective structures along coastlines.
  • Developing early warning systems to alert people to the threat of a tsunami.
  • Educating people about the dangers of tsunamis and how to prepare for them.

If you live in an area that is at risk of tsunamis, it is important to have a plan in place in case of an emergency. This plan should include things like where you will go if a tsunami hits, how you will communicate with your family and friends, and what supplies you will need.

Here are some frequently asked questions about tsunamis:

  • What causes a tsunami?
    A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances above or below water) above or below water all have the potential to generate a tsunami.

  • How fast do tsunamis travel?
    Tsunamis can travel at speeds of up to 800 kilometers per hour (500 mph).

  • How high can tsunamis be?
    Tsunamis can reach heights of more than 30 meters (100 feet).

  • What are the effects of a tsunami?
    Tsunamis can cause widespread damage to coastal areas, including flooding, erosion, and loss of life.

  • What can be done to reduce the risk of tsunami damage?
    There are a number of things that can be done to reduce the risk of tsunami damage, including building seawalls and other protective structures along coastlines, developing early warning systems to alert people to the threat of a tsunami, and educating people about the dangers of tsunamis and how to prepare for them.

  • What should I do if I am in an area that is at risk of a tsunami?
    If you live in an area that is at risk of tsunamis, it is important to have a plan in place in case of an emergency. This plan should include things like where you will go if a tsunami hits, how you will communicate with your family and friends, and what supplies you will need.

A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami.

Tsunamis can cause devastating effects on coastal areas, affecting tens of thousands of people and causing billions of dollars in damage. The most destructive tsunamis in recent history include the 2004 Indian Ocean earthquake and tsunami, the 2011 Tōhoku earthquake and tsunami, and the 2018 Sulawesi earthquake and tsunami.

Tsunamis are a serious NATURAL HAZARD, and it is important to be aware of the risks and to take precautions to protect yourself and your family.

Here are some MCQs about tsunamis:

  1. What is a tsunami?
    (A) A series of water waves caused by the displacement of a large volume of a body of water
    (B) A type of earthquake
    (C) A type of volcanic eruption
    (D) A type of landslide

  2. What are the most common causes of tsunamis?
    (A) Earthquakes
    (B) Volcanic eruptions
    (C) Underwater explosions
    (D) All of the above

  3. What are the effects of tsunamis?
    (A) Can cause devastating effects on coastal areas
    (B) Can affect tens of thousands of people
    (C) Can cause billions of dollars in damage
    (D) All of the above

  4. What are some ways to protect yourself from tsunamis?
    (A) Be aware of the risks
    (B) Take precautions to protect yourself and your family
    (C) Know the evacuation routes in your area
    (D) All of the above

  5. What is the most destructive tsunami in recent history?
    (A) The 2004 Indian Ocean earthquake and tsunami
    (B) The 2011 Tōhoku earthquake and tsunami
    (C) The 2018 Sulawesi earthquake and tsunami
    (D) All of the above