Seismic Risk Assessment of Built Environment in the Himalayan Foothill City of Dehradun, Uttarakhand

Authors

  • Priya M Indian Institute of Remote Sensing
  • sandeep maithani Indian Institute of Remote Sensing
  • Pramod Kumar Indian Institute of Remote Sensing

DOI:

https://doi.org/10.58825/jog.2024.18.1.116

Keywords:

Geospatial, Urban growth, Spectral acceleration, Seismic micro-zonation, spectral indices, Vulnerability

Abstract

Himalayan foothill city of Dehradun in Uttarakhand state is located in a tectonically active region and is prone to earthquakes. The growth of Dehradun city is analysed using high resolution remote sensing datasets in the current study, with a focus on its vulnerability to seismic risks for single and double storey structures as the city is predominantly made up of low-rise structures. Analysis shows that 10% of urban expansion has occurred in spectral acceleration zones that are vulnerable to double-storey buildings, while 38% of urban expansion has happened in spectral acceleration zones that are vulnerable to single-storey buildings. The proposed land use as per Dehradun Masterplan 2041 is examined with reference to National Earthquake Hazards Reduction Program (NEHRP) for seismic regulating provisions. It is emphasized that the intended land use is incongruous in areas with higher spectral acceleration zones since it comprises structures with higher occupancy and the amenities required during post-earthquake rehabilitation. On the other hand, the open spaces are more appropriate in these locations, which will lessen susceptibility as the influence of seismic forces can be sufficiently attenuated. The present study, thus highlights the significance of including seismic risk information in urban planning processes in order to ensure resilient cities.

References

Baker, J. W., & Cornell, C. A. (2006). Which spectral acceleration are you using. Earthquake Spectra, 22(2), 293–312, 293–312, https://doi.org/10.1193/1.2191540.

Bull-Kamanga, L., Diagne, K., Lavell, A., Leon, E., Lerise, F., MacGregor, H., Maskrey, A., Meshack, M., Pelling, M., Reid, H., Satterthwaite, D., Songsore, J., Westgate, K., & Yitambe, A. (2003). From everyday hazards to disasters: The accumulation of risk in urban areas. Environment and Urbanization, 15(1), 193–204. https://doi.org/10.1630/095624703101286457.

Census of India-2001, Indian Department of Census: Indian Government, New Delhi.

Census of India-2011, Indian Department of Census: Indian Government, New Delhi.

Fayaz, M., Romshoo, S. A., Rashid, I., and Chandra, R. (2023). Earthquake vulnerability assessment of the built environment in the city of Srinagar, Kashmir Himalaya, using a geographic information system. Natural Hazards and Earth System Sciences, 23(4), 1593–1611. https://doi.org/10.5194/nhess-23-1593-2023.

Indian Standard, 2002. Criteria for Earthquake Resistant Design of Structures - General Provisions and Buildings 1893-Part-1. Bureau of Indian Standards, New Delhi.

Jain, G., and Bazaz, A. (2016). Urban risks and resilience in India. In Urban policy dialogues: Operationalising SDGs. Bangalore: Indian Institute for Human Settlements, https://doi.org/10.24943/updsdg2016_5.J.

Maithani, S., 2020. A Quantitative Spatial Model of Urban Sprawl and its Application to Dehradun Urban Agglomeration, Journal of the Indian Society of Remote Sensing. 48(11). 1583-1592, doi.org/10.1007/s12524-020-01182-9.

Mahajan, A. K., Slob, S., Ranjan, R., Sporry, R., Champati ray, P. K., & van Westen, C. J. (2007). Seismic microzonation of Dehradun City using geophysical and geotechnical characteristics in the upper 30 m of soil column. Journal of Seismology, 11(4), 355–370. https://doi.org/10.1007/s10950-007-9055-1.

McClean, D. (2010). World Disasters Report 2010: Focus on Urban Risk. Switzerland. International Federation of Red Cross and Red Crescent Societies.

Mihalic, S., Maja, O., and Krkac, M, 2011. Seismic microzonation: A review of principles and practice. Geofizika, 28(1), 5-20, geofizika-journal.gfz.hr/vol_28/No1/28_1_mihalic_et_al.pdf.

National Disaster Management Plan, 2016. A publication of the National Disaster Management Authority, Government of India. May 2016, New Delhi.

NEHRP , 2003. NEHRP recommended provisions for seismic regulations for new buildings and other structures (FEMA~450). Building seismic safety council national institute of building sciences Washington, D.C.

Sundararajan, N., & Seshunarayana, T., 2018. Shear Wave Velocities in the Estimation of Earthquake Hazard Over Alluvium in Seismically Active Region. Journal of the Geological Society of India, 92(3), 259–264. https://doi.org/10.1007/s12594-018-1002-y.

Town and Country Planning Department, 2023, Dehradun Master plan -2041. Govt. of Uttarakhand, Uttarakhand, India.

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Published

2024-04-30

How to Cite

Priya M, maithani, sandeep, & Pramod Kumar. (2024). Seismic Risk Assessment of Built Environment in the Himalayan Foothill City of Dehradun, Uttarakhand. Journal of Geomatics, 18(1), 117–126. https://doi.org/10.58825/jog.2024.18.1.116