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011-46509848

GeoHazards Society
  • Home
  • About Us
  • Activities
  • Useful resources
  • Know your hazards
  • Donate Now
  • Contact Us

Earthquakes

An earthquake results from sudden movement when two blocks of earth  slip past one another. It includes tremors & vibrations of the  surface of the earth. In a densely populated location, an earthquake may  result in damage, loss of property, and fatalities. According to the  Maximum Considered Earthquakes, India is divided into four seismic zones  namely Zone-II, Zone-III, Zone-IV, and Zone-V) where Zone-V expects the  highest level of seismicity and Zone II is considered to be the lowest  level of seismicity. 

Seismic Zone and Intensity on the MSK scale

Zone-II (Low Damage Risk Zone) - VI or less

Zone-III (Moderate Damage Risk Zone) - VII

Zone-IV (High Damage Risk Zone) - VIII

Zone-V (Very High Damage Risk Zone) - IX or more

To find out which zone your district falls in, please use https://vai.bmtpc.org/eq.html


WIND

WIND

The coastal regions of India are worst affected by cyclones every  year. Tropical cyclones occur in the months of May-June and  October-November. India is geographically divided into six wind zones as  follows:

Wind Zones and Basic Wind Speed in m/s

Very High Damage risk Zone - A55

Very High Damage risk Zone - B50

High Damage Risk Zone - 47

Moderate Damage Risk Zone - A44

Moderate Damage Risk Zone - B39 

Low Damage Risk Zone - 33

Please use  https://vai.bmtpc.org/wind.html to learn about the wind zone in your state.


FLOOD

FLOOD

We all know that many Indian states are highly prone to floods. 80%  of precipitation occurs in the monsoon months from June to September  resulting in cloudbursts, floods & urban flash floods in many  regions. The flood map of India is available here: https://vai.bmtpc.org/flood.html for your kind reference.



LANDSLIDES

LANDSLIDES

Landslides/rockfalls/mudflows are various forms of mass wasting where  a significant portion of the debris placed on the loose soil moves  downwards.  The landslides are often triggered by heavy rainfall, an  earthquake, or a manmade slope cut.

Please verify whether your location is prone to landslides using https://vai.bmtpc.org/landslide.html.




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