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According to IS 1893-1962 how many seismic zone’s are there-

According to IS 1893-1962 how many seismic zone’s are there- Correct Answer Five

The correct answer is option 1) i.e. 5.

  • Earthquake-prone areas of the country have been identified on the basis of scientific inputs relating to seismicity, earthquakes occurred in the past and tectonic setup of the region.
  • According to IS 1893-1962, India has been grouped into five seismic zones.
  • The Geological Survey of India (GSI) first published the seismic zoning map of the country in the year 1935. 
  • According to IS 1893 - 2016, India has been grouped into Four seismic zones.

Note:

  • An Earthquake is caused by the forces originating in the interior of the earth. These internal forces are called endogenetic forces.
  • The magnitude of an earthquake is measured by the Richter scale.
  • The place of origin of Earthquake is called Focus. The place on the ground surface which is perpendicular to the focus is called Epicentre.
  • Seismology is the special branch of geology that deals with the study of Earthquakes.
  • Shadow zones are zones where earthquakes do not occur or rarely occur.

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