District Disaster Management Plan- 2012 District Faridabad

Table no 12. Effects of Earthquake at various magnitudesMagnitude Description Earthquake Effects Frequency ofOccurrenceLess than 2.0 Micro Micro Earthquakes are not felt 8000 per day2.0 – 2.9 Minor Generally not felt but recorded. 1000 per day3.0 – 3.9 Often felt but rarely causes damage. 49,000 per year (est.)4.0 – 4.9 Light Noticeable Shaking of indoor items, rattling noises, Significant 6,200 per year (est.)damage unlikely.5.0 – 5.9 Moderate Can cause major damage to poorly constructed buildings over 800 per yearsmall regions. At most slight damage to well designed buildings6.0 – 6.9 Strong Can be destructive in areas upto 160 kms. across in populated 120 per yearregions.7.0 – 7.9 Major Can cause severe damage over larger areas 18 per year8.0 – 8.9 Great Can cause severe damage in areas several hundred kilometers 01 per yearacross9.0 – 9.9 Devastating in areas several thousand kilometers across 01 per 20 years10.0 + Massive Never recorded, widespread devastation across very large areas. Extremely rareSource: U.S. Geological Survey2(c) Seismic hazard, risk and vulnerability in Faridabad: Nearly, 56 percent of the IndianSubcontinent is prone to different levels of seismic hazard. This is amply demonstrated by the factthat more than 650 earthquakes in excess of M 5 have been recorded in India in the last one century(Pande, 2005). India has been classified intoFig 01 India: Seismic Zonation Mapdifferent seismic zones indicating varyingintensity of damage or frequency ofearthquakeoccurrences(Seismotectonic Atlas of Inida and itsenvirons). The seismic zones vary from ZoneI to V, where area lying in zone V, indicateshighest seismic activity. Faridabad fallsunder seismic zone IV, which is fairly highseismicity, where the general occurrence ofearthquakes is of 5-6 magnitude, few of 6-7magnitude and occasional occurrences of 7-8magnitude on a Richter scale.This is further substantiated by the fact thatthe region has been frequently affected by Source: Geological Survey of Indiaseismic disturbances. The most recent tremor was felt in Faridabad on 18 th September, 2011, whenan earthquake of 6.9 magnitude occurred in Sikkim (27.72 N and 88.06 E) at a depth of 19.7 Km.28