Often asked: What Type Of Fault Is The Fault That Caused The Phuket Tsunami?

What caused the Phuket tsunami?

A powerful undersea earthquake that struck off the coast of Sumatra island, Indonesia, set off the 2004 Indian Ocean tsunami, also known as the Christmas or Boxing Day tsunami, on Sunday morning, Dec. 26, 2004. The quake caused the ocean floor to suddenly rise by as much as 40 meters, triggering a massive tsunami.

Can a fault slip cause a tsunami?

Earthquakes generally occur on three types of faults: normal, strike-slip, and reverse (or thrust). Tsunamis can be generated by earthquakes on all of these faults, but most tsunamis, and the largest, result from earthquakes on reverse faults.

Which fault Cannot produce tsunami?

A strike-slip fault where the movement of adjacent plates is primarily horizontal is not likely to cause a tsunami. The San Andreas Fault in California is an example of a strike-slip fault.

What is a tsunami caused by?

A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. This force creates waves that radiate outward in all directions away from their source, sometimes crossing entire ocean basins.

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Which country was hit hardest by the 2004 tsunami?

In Sri Lanka, the civilian casualties were second only to those in Indonesia, with approximately 35,000 killed by the tsunami. The eastern shores of Sri Lanka were the hardest hit since it faced the epicentre of the earthquake, while the southwestern shores were hit later, but the death toll was just as severe.

What is the deadliest tsunami in history?

2004 Indian Ocean Earthquake and Tsunami: The 2004 Indian Ocean earthquake and tsunami was one of the deadliest and most destructive natural disasters in human history. The undersea megathrust earthquake struck the west coast of Sumatra, Indonesia, on Dec. 26, 2004.

Can a 7.1 earthquake cause a tsunami?

No, all earthquakes do not cause tsunamis. There are four conditions necessary for an earthquake to cause a tsunami: (1) The earthquake must occur beneath the ocean or cause material to slide in the ocean. (2) The earthquake must be strong, at least magnitude 6.5.

What is the most active tsunami area?

Tsunamis occur most frequently in the Pacific, particularly along the “Pacific Ring of Fire “. This zone is found at the northern edge of the Pacific Plate and refers to the geologically most active fields of the earth. Several times a year, strong earthquakes of at least 7 on the Richter scale result in tsunamis.

Where is the fault most likely located in an area struck by a tsunami?

Every coastal area and river estuary is potentially threatened by tsunamis, but they are most likely to happen on shores facing directly a megathrust.

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Can a volcano cause a tsunami?

Although relatively infrequent, violent volcanic eruptions represent also impulsive disturbances, which can displace a great volume of water and generate extremely destructive tsunami waves in the immediate source area.

What are the 5 causes of tsunami?

What are the causes of tsunamis?

  • Earthquakes. It can be generated by movements along fault zones associated with plate boundaries.
  • Landslides. A landslide that occurs along the coast can force large amounts of water into the sea, disturbing the water and generate a tsunami.
  • Volcanic Eruption.
  • Extraterrestrial Collision.

How strong does an earthquake have to be to cause a tsunami?

Usually, it takes an earthquake with a Richter magnitude exceeding 7.5 to produce a destructive tsunami. Most tsunamis are generated by shallow, great earthquakes at subductions zones. More than 80% of the world’s tsunamis occur in the Pacific along its Ring of Fire subduction zones.

What is the biggest tsunami ever?

Lituya Bay, Alaska, July 9, 1958 Its over 1,700-foot wave was the largest ever recorded for a tsunami. It inundated five square miles of land and cleared hundreds of thousands of trees. Remarkably, only two fatalities occurred.

When was the last tsunami in the world?

Tsunami of January 22, 2017 (Bougainville, P.N.G.)

What is effect of tsunami?

Environmental impacts Tsunamis not only destroy human life, but have a devastating effect on insects, animals, plants, and natural resources. A tsunami changes the landscape. It uproots trees and plants and destroys animal habitats such as nesting sites for birds.

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