SEISMIC MICROZONATION OF A REGION BASED ON SEISMOLOGY AND GEOLOGICAL DATA

In current and past, massive earthquakes have leads to an huge loss of lives and non-lives in the world (Armenia, 1988; Iran, 1990; US, 1994; Japan, 1995; Turkey, 1999; Taiwan, 1999, India 2001, Sumatra 2004, Pakistan, 2005, China 2008,) On January 26, India's 51 republic day 2001 at 08:46AM local time (3:16 UTC) Bhuj Earthquake, one of the major devastating earthquakes ever to strike India occurred in the Kachchh region of Gujarat in western India. The magnitude of 7.9(Mw) (6.9 Richter scale), and the depth of 16 Km(10mi), the damage was very big impact is round the radius of 350kms. The epicenter was about 9km south-southwest of the village of chobari in bhachau taltauka of kutch district of Gujarat, including major cities like Ahmedabad, Bhavnagar and Surat at a distance of 240 km, 275 km and 350 km respectively. The damage incurred as well as past earthquake depends not only on the intensity of the earthquake magnitude (source) but, in consideration to a large extent, on the medium scale through which the seismic waves propagate (path of waves propagation and site effects like soil condition) and the social-economic development of the human settlement (Panza et al., 2001). Many huge cities in India are situated in the severe earthquake hazard threat in the vicinity of Himalayan region and even in peninsular shield. Macrozonation map in Indian seismic code 1893 is frequently revised soon after a major earthquake. New revision was published in 2002 after Bhuj earthquake in 2001, which is of many recent earth quake is to be considered in with adequate data at an new revision to contains four macro zones.