This presentation explains about different Seismic Zones Of India.It will help Young civil Engineers, Geologist to know about different earthquake Zones & to plan accordingly civil engineering structures.

1. Dept. of MBA, Sanjivani COE, Kopargaon 1
Advanced Engineering Geology With
Rock Mechanics (B.E. Elective–I )
Unit- I
1.6 Seismic Zones of
India
Sanjivani College of Engineering, Kopargaon
Civil Engineering Department
Presented By:
Dr. A. V. Deshpande
Ph. D (Geology), M.Tech (Env.Engg.)
Asst.Professor Civil Engg.Dept.
www.sanjivani.org.in

2. The Geological Survey of India (G. S. I.) first published the
seismic zoning map of the country in the year 1935. With
numerous modifications made afterwards,
Map was initially based on the amount of damage suffered by
the different regions of India because of earthquakes.
This map shows the four distinct seismic zones of India.
Following are the various seismic zones of the, India
Zone - II: This is said to be the least active seismic zone.
Zone - III: It is included in the moderate seismic zone.
Zone - IV: This is considered to be the high seismic zone.
Zone - V: It is the highest seismic zone.
Seismic Zones of India

4. Seismic Zones of India
 The MSK (Medvedev-Sponheuer-Karnik)
 MSK Medvedev ,Sponheur,Karnik is a Macroseismic
intensity scale used to evaluate the severity of ground
shaking on the basis of observed effects in an area of
earthquake occurrence
 Intensity broadly associated with the various seismic
zones is 2, 3, 4 and 5, respectively
 Each zone indicates the effects of an earthquake at a
particular place based on the observations of the affected
areas and can also be described using a descriptive scale
like Modified Mercalli intensity scale or the Medvedev–
Sponheuer–
 Karnik scale

5. Seismic Zones of India
 Zone - II:
 This region is liable to MSK VI or less and is
classified as the Low Damage Risk Zone.
 The IS code assigns zone factor of 0.10 (maximum
horizontal acceleration that can be experienced by a
structure in this zone is 10% of gravitational
acceleration) for Zone 2
 Zone - III
 The Andaman and Nicobar Islands, parts of
Kashmir, Western Himalayas fall under this zone.
 This zone is classified as Moderate Damage Risk
Zone which is liable to MSK VII. and also 7.8.
 The IS code assigns zone factor of 0.16 for Zone 3

6. Seismic Zones of India
.
Zone - IV
This zone is called the High Damage Risk Zone and
covers areas liable to MSK VIII. The IS code assigns
zone factor of 0.24 for Zone 4.
The Indo-Gangetic basin and the capital of the country
(Delhi), Jammu and Kashmir fall in Zone 4.
In Maharashtra, the Patan area (Koyana nager) is also in
zone no-4.
In Bihar the northern part of the state like- Raksaul, Near
the border of India and Nepal, is also in zone no-4.

7. Seismic Zones of India
 Zone - V
 Zone 5 covers the areas with the highest risks zone
that suffers earthquakes of intensity MSK IX or
greater. The IS code assigns zone factor of 0.36 for
Zone 5.
 Structural designers use this factor for earthquake
resistant design of structures in Zone 5.
 The region of Kashmir, the western and central
Himalayas, North and Middle Bihar, the North-East
Indian region and the Rann of Kutch fallin this zone.
 Generally, the areas having trap rock or basaltic
rock are prone to earthquakes.

9. Seismic Zones of India
Seismic Zones of India
Importance of India's Seismic Zoning Map
Department of Disaster Management of the different
state governments.
Planning for a natural disaster like earthquake.
Identifying the lowest, moderate as well as highest
hazardous or earthquake prone areas in India.
Before constructing any high rise building so as to
check the level of seismology in any particular area.
This in turn results in saving life in the long run.


10. Seismic Zones of India
 World Bank & United Nations report
shows estimates that around 200
million city dwellers in India will be
exposed to storms and earthquakes by
2050