Tsunamis

A:

Tsunamis are caused by undersea volcanoes or earthquakes that push massive amounts of energy through the water. Earthquakes are the most common cause, but landslides can create tsunamis as well.

See Full Answer
Filed Under:
  • How is a tsunami formed?

    Q: How is a tsunami formed?

    A: The formation of a tsunami is a direct result of underwater earthquakes. The energy released during underwater earthquakes is transferred to the water, moving it upward and creating huge waves.
    See Full Answer
    Filed Under:
  • How do tsunamis affect people?

    Q: How do tsunamis affect people?

    A: While an immediate effect of a tsunami is the destruction of life and property, tsunamis also create a health crisis. Not only do tsunamis wipe out buildings and carry many of the things in their path away, they leave behind a crippled infrastructure that makes it extremely difficult to provide basic services to the people who survived.
    See Full Answer
    Filed Under:
  • Where do tsunamis happen most?

    Q: Where do tsunamis happen most?

    A: Tsunamis occur with the most frequency in the Pacific Ocean and around Indonesia. This is because of the properties of the Pacific Rim; it has a high number of active submarine earthquake zones, which are a major factor in the occurrence of tsunamis. However, it is also possible for tsunamis to occur in other places. The Mediterranean Sea and the Caribbean Sea are also both susceptible to tsunamis.
    See Full Answer
    Filed Under:
  • What causes a tsunami?

    Q: What causes a tsunami?

    A: Tsunamis are caused by undersea volcanoes or earthquakes that push massive amounts of energy through the water. Earthquakes are the most common cause, but landslides can create tsunamis as well.
    See Full Answer
    Filed Under:
  • What are the effects of a tsunami?

    Q: What are the effects of a tsunami?

    A: The effects of a tsunami include loss of human and animal life, devastating property damage, severe flooding and disease. There are also environmental effects such as contamination of soil and water, a permanent change to the landscape, solid waste and disaster debris, and hazardous materials and toxic substances.
    See Full Answer
    Filed Under:
  • How are tsunamis measured?

    Q: How are tsunamis measured?

    A: Tsunamis are measured by their runup,which is the difference between an observed sea level and the distance the tsunami waters reach on shore. This is generally measured once the danger has passed, so debris and destruction of plant life are often used as gauges of runup.
    See Full Answer
    Filed Under:
  • What is a tsunami?

    Q: What is a tsunami?

    A: A tsunami is a series of waves generated by a disturbance on the ocean floor. This disturbance can be caused by earthquakes, landslides, volcanic eruptions, explosions or meteorites. The waves have very long wavelengths, which can travel hundreds of miles across the ocean. As the waves reach the continental shelf, they can grow to be several meters in height and cause extensive destruction along the coastline.
    See Full Answer
    Filed Under:
  • Where do tsunamis form?

    Q: Where do tsunamis form?

    A: A tsunami begins above an undersea earthquake, landslide or volcanic eruption along the ocean floor, explains Lisa Gardiner of the National Earth Science Teachers Association. In the case of an earthquake, when the movement along a fault moves the seafloor upward, water also pushes upward and becomes a tsunami wave.
    See Full Answer
    Filed Under:
  • How do you prepare for a tsunami?

    Q: How do you prepare for a tsunami?

    A: Before a tsunami is imminent, people living in areas where tsunamis are possible should construct tsunami emergency kits and organize a family communications plan. When a tsunami watch is issued, people should tune into the National Oceanic and Atmospheric Administration's weather service, ensure the emergency kit is well stocked, locate family members and prepare to evacuate. When a tsunami warning is issued, everyone should evacuate to higher ground.
    See Full Answer
    Filed Under:
  • Where do most tsunamis occur?

    Q: Where do most tsunamis occur?

    A: Tsunamis occur most often in the Pacific Ocean and Indian Ocean, according to the National Oceanic and Atmospheric Administration’s Center for Tsunami Research. Areas along the Pacific Rim are most vulnerable due to the frequent earthquakes that occur. Tsunamis also occur less frequently in the Mediterranean Sea.
    See Full Answer
    Filed Under:
  • How can a tsunami be prevented?

    Q: How can a tsunami be prevented?

    A: No known way to prevent a tsunami from occurring exists. Individuals can take steps to be prepared for a tsunami, and warning systems can help get people out of harm's way if an impending tsunami is predicted.
    See Full Answer
    Filed Under:
  • Could a tsunami hit New York?

    Q: Could a tsunami hit New York?

    A: Any city located along marine coastal regions could fall prey to a tsunami. However, the chances of a tsunami hitting New York are slim because the Atlantic Ocean is not as prone to the earthquakes which fuel tsunami activity. In order for major tsunami devastation to occur, it needs the right location and specific conditions, such as a strong quake (6.5 and above) as well as shallow coastal waters, which allow wave height to build up.
    See Full Answer
    Filed Under:
  • What is the Japanese tsunami death toll?

    Q: What is the Japanese tsunami death toll?

    A: As of Feb. 10, 2014, the Japanese tsunami death toll is 15,884. On March 11, 2011, at 2:46 p.m. local time, a 9.0 magnitude earthquake occurred 15.2 miles deep at 231 miles northeast of Tokyo, Japan, causing a tsunami with 30-foot waves that damaged several nuclear reactors in the area.
    See Full Answer
    Filed Under:
  • How do tsunamis form?

    Q: How do tsunamis form?

    A: Tsunamis are massive waves that form when an ocean is disturbed by an earthquake, landslide, volcanic eruption or other disruptive event. Underwater earthquakes, which occur at the boundaries of tectonic plates, are one of the most common causes of tsunamis. When one plate moves up or down, it displaces water, and it is this displaced water that becomes the tsunami wave.
    See Full Answer
    Filed Under:
  • What is key information about a tsunami?

    Q: What is key information about a tsunami?

    A: Tsunamis, giant waves that sometimes travel across entire oceans, are triggered by underwater earthquakes or volcanic eruptions. In the open ocean, tsunamis can be barely noticeable, but as they approach land, the waves increase in height, sometimes flooding the landscape with devastating results.
    See Full Answer
    Filed Under:
  • Q: Why do waves increase in height as they approach the shore?

    A: As waves approach the shore, their interaction with the sea floor causes bunching, compressing them into shorter horizontal distances and increasing their height. The bunching of waves is an effect oceanographers call shoaling. Eventually, gravity overcomes the height of the wave, causing them to break.
    See Full Answer
    Filed Under:
  • Q: What happens after a tsunami hits?

    A: After the initial wave hits land, a large wall of water follows closely behind it. The water slams into the land, then immediately begins to recede, taking many objects on land with it.
    See Full Answer
    Filed Under:
  • Q: What does a tsunami sound like?

    A: Witnesses to tsunamis report they make a roaring sound as they approach, similar to the sound of a freight train or a jet airplane. Tsunamis are triggered by underwater earthquakes, which are reported to make similar sounds. A hydrophone captured the sound of the 9.0 earthquake that struck Japan in 2011 and caused a tsunami across the Pacific Ocean, which was like the sound of a rocket taking off.
    See Full Answer
    Filed Under:
  • Q: What are some key facts about the 2011 tsunami in Japan?

    A: The 2011 tsunami in Japan resulted from an earthquake off the coast of Honshu, Japan, that measured 9.0 on the Richter scale, making it the fourth-strongest earthquake in world history. The tsunami devastated Fukushima, Japan, damaging or destroying nuclear reactors and causing the release of radioactive material into the environment. As a result of the tsunami, more than 15,000 people have been confirmed dead, with 2,500 still missing, as of April 2015.
    See Full Answer
    Filed Under:
  • Q: Where do tsunamis occur?

    A: Tsunamis most frequently occur in countries bordering the Pacific Ocean around the Pacific Rim. This area also covers the region referred to as the Ring of Fire, a place known for severe tectonic-plate shifts. The earthquakes caused by the plates movement set the water in motion to create tsunami-strength waves.
    See Full Answer
    Filed Under:
  • Q: Where are tsunamis most likely to occur?

    A: Tsunamis are most likely to occur in the Pacific and Indian Ocean regions. Tsunamis are most commonly formed from undersea earthquakes that result in a sudden rise or fall of the Earth's crust under the ocean.
    See Full Answer
    Filed Under: