Earthquake tremors have been felt in Andaman and Nicobar Islands. According to the National Center for Seismology, the tremors were felt in Port Blair. It was told that this earthquake occurred at 6:27 am on Tuesday. The magnitude of this earthquake in the islands was 4.3. However, there is no report of any damage in this earthquake. Even before this, earthquake tremors were felt in the Andaman Islands region last month. The intensity was then measured at 4.2 on the Richter scale and no loss of life or property was reported at that time.
Why does earthquake happen?
Earth is mainly made up of four layers, inner core, outer core, mantle and crust. The crust and upper mantle are called lithosphere. This 50-km-thick layer is divided into sections, which are called tectonic plates. These tectonic plates keep moving from their place but when they move too much, an earthquake occurs. These plates can move both horizontally and vertically. After this they find their place and in such a situation one plate comes under the other.
Why do plates collide?
Actually these planets keep rotating very slowly. Thus, every year they move 4-5 mm from their place. When one plate moves near another plate, another moves away. So sometimes they collide.
What do the epicenter and intensity of an earthquake mean?
The epicenter of an earthquake is the place just below which the geological energy is released by the movement of the plates. Earthquake vibrations are high at this place. As the frequency of the vibration goes away, its effect decreases. However, if there is an earthquake with a magnitude of 7 or more on the Richter scale, then the tremor is stronger within a radius of 40 km around. But it also depends on whether the seismic frequency is upward or in range. If the frequency of vibration is higher then less area will be affected.
What is meant by depth of earthquake?
It is clear that at what depth the movement has taken place. The greater the depth of the earthquake, the lesser its intensity will be felt on the surface.
Which earthquakes are dangerous?
Earthquakes with a magnitude of up to 5 on the Richter scale are usually not dangerous, but this depends on the structure of the area. If the epicenter of the earthquake is on the bank of the river and there are tall buildings built without seismic technology, then an earthquake of magnitude 5 can also be dangerous.
protect like this
Construct earthquake resistant building at a safe place.
Take training in disaster management from time to time and do rehearsals.
Make a disaster kit in which radio, essential paper, mobile, torch, match, candle, slippers, some money and essential medicines should be kept.
Hold the furniture tightly to maintain balance. Do not use the lift at all.
-Stay away from trees and power lines in an open area.
Do not go into the house after it is demolished.
If you are inside the car, stay in it, don’t get out.