PRESENTATION ONSIESMIC ZONESSubmitted To: Submitted By:Ms. Meenakshi DivyanshClass X-CRoll No. 2

IndexSeismic ZonesTypes of Seismic ZonesEarthquakeCausesHow to MeasuresTsunami Movement

Acknowledgment It is my pleasure to be indebted to various people, who directly or indirectly contributed in the development of this work and who influenced my thinking, behavior, and acts during the course of study.

I express my sincere gratitude to Ms. Minakshi Kukreja, worthy Project Incharge for providing me an opportunity to undergo my minor project Lastly, I would like to thank the almighty and my parents for their moral support and my friends with whom I shared my day-to-day experience and received lots of suggestions that improved my quality of work.

SEISMIC ZONESZone 5Zone 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 zone factor of 0.36 is indicative of effective (zero period) level earthquake in this zone. It is referred to as the Very High Damage Risk Zone. The region of Kashmir, the western and central Himalayas, North Bihar, the North-East Indian region and the Rann of Kutch fall in this zone.Generally, the areas having trap rock or basaltic rock are prone to earthquakes.Zone 4This 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 Faltan area (Koyananager) 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.

SEISMIC ZONESZone 3The 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.Zone 2This 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.

EarthquakesShaking of earth due to movement of rocks along a fault. Rocks under stress accumulate strain energy over time. When stress exceeds strength of rocks, rock breaks. Strain energy is released as seismic waves. The longer that energy is stored up and is maintained without release, the more likely that a strong earthquake will occur.

Causes

Types of Fault

How to Measures

Seismogram Printout

Time-Travel Curve

Tsunami Movement: ~600 mph in deep water ~250 mph in medium depth water ~35 mph in shallow water

Worlds Largest Earthquake: 1964 Anchorage, AlaskaRegistered 8.6 on Richter Scale

Summary Conclusion

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, this map was initially based on the amount of damage suffered by the different regions of India because of earthquakes. Color coded in different shades of the color red, this map shows the four distinct seismic zones of India. Following are the varied seismic zones of the nation, which are prominently shown in the map: 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.

Bibliography

http://en.wikipedia.org/wiki/Earthquake_zones_of_Indiahttp://www.business-standard.com/article/specials/atleast-38-indian-cities-in-high-risk-earthquake-zones-115042700095_1.htmlhttp://www.imd.gov.in/section/seismo/static/seismo-zone.htm