17 years after the painful tsunami in Indonesia, which killed 230,000 people

Weather of Arabia - Sinan Khalaf - on December 26, 2004 AD, at the time of one of the largest natural disasters in the world, we are talking here about the tsunami disaster in Indonesia and the Indian Ocean, which was described as one of the most violent natural disasters in history, causing the death of nearly 230,000 people.

The so-called Sumatra earthquake occurred under water in the Indian Ocean at 07:58:53 local time, with a strength of 9.1 on the Richter scale, and as a result, tsunami waves rose 30 meters high, and rushed towards the coast to hit 14 surrounding countries, including These include Aceh (Indonesia), Sri Lanka, Tamil Nadu (India), and Khao Lak (Thailand). Banda Aceh recorded the highest number of deaths.

What causes a tsunami?

A tsunami is a group of powerful waves that arise from the movement of a large area of water, such as the ocean. It also occurs as a result of earthquakes and great movements, whether on the surface of the water or under it, some volcanic eruptions, explosions under the surface of the water, landslides, water earthquakes, the impact of comets and nuclear weapons explosions in the seas. Therefore, the effects of the tsunami are Destroyer.

The wavelength of a tsunami in the deep ocean is 200 kilometers (120 miles), with the wave traveling at a speed of 800 kilometers per hour (500 mph), but due to the large wavelength, the oscillation wave at any point takes 20 to 30 minutes to complete a full cycle at a height of 1 meters (3.3 feet), which makes it difficult to detect tidal waves over deep water, and the movement of waves cannot be noticed by ships.

Since the wavelength is still some kilometers (a few miles), the tsunami takes a few minutes to reach its maximum height, as the victims see it as an ocean flood rather than a deadly water wall.