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Evaluation of liquefaction potential hazard of Chennai city, India: using geological and geomorphological characteristics

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  • Ganapathy Ganapathy
  • Ajay Rajawat

Abstract

According to the latest UNFA Report on state of world population 2007, unleashing the potential of urban growth by 2030, the urban population will rise to 5 billion or 60 % of the world population. Liquefaction in urban areas is dangerous phenomenon, which cause more damage to buildings and loss of human lives. Chennai, the capital city of the State Tamil Nadu in India, is one of the densely populated cities in the country. The city has experienced moderate magnitude earthquakes in the past and also categorized under moderate seismic hazard as per the Bureau of Indian Standards (BIS in Criteria for earthquake resistant design of structures; Bureau of Indian Standards, New Delhi, 1893 2001 ). A study has been carried out to evaluate the liquefaction potential of Chennai city using geological and geomorphological characteristics. The subsurface lithology and geomorphological maps were combined in the GIS platform for assessing the liquefaction potential. The liquefaction hazard broadly classified into three categories viz., liquefaction likely, possible and not likely areas. Mainly, the liquefaction likely areas spread along the coastal areas and around the river beds. The rest of the areas are liquefaction not likely and possible. The present map can be used as first-hand information on regional liquefaction potential for the city, and it will be help to the scientists, engineers and planners who are working for future site-specific studies of the city. Copyright Springer Science+Business Media B.V. 2012

Suggested Citation

  • Ganapathy Ganapathy & Ajay Rajawat, 2012. "Evaluation of liquefaction potential hazard of Chennai city, India: using geological and geomorphological characteristics," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 64(2), pages 1717-1729, November.
    • Handle: RePEc:spr:nathaz:v:64:y:2012:i:2:p:1717-1729
    DOI: 10.1007/s11069-012-0331-1
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    Cited by:

    1. Reshma Raskar Phule & Deepankar Choudhury, 2017. "Seismic reliability-based analysis and GIS mapping of cyclic mobility of clayey soils of Mumbai city, India," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 85(1), pages 139-169, January.

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