Kashmir Earthquake Damage Assessment of Balakot City Using Geospatial Technologies

Kashmir Earthquake Damage Assessment of Balakot City Using Geospatial Technologies

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Abstract

Kashmir Earthquake Damage Assessment of Balakot City Using Geospatial Technologies

Muhammad Shafique
Research Associate
National Centre of Excellence in Geology, University of Peshawar,
Pakistan
Email: [email protected]

Dr.M Asif Khan
National Centre of Excellence in Geology
University of Peshawar

Till date, prevention of natural disasters is only rarely achieved, and such events continue to pose an increasing threat to life and property. Especially following earthquakes, there is a need for rapid and reliable damage assessment in the critical post event hours. Observations concerning the magnitude and distribution of building damage after a destructive earthquake are of primary importance for post-event emergency response, and later on, for understanding the effects of shaking on buildings and other key infrastructure. Damage assessment and exploration of the causes of the damage other then ground shaking are crucial, as this provide the basis for the future rehabilitation of the affected people. GIS and Remote sensing technologies can provide valuable information for response activities due to potentially high spatial temporal resolution and synoptic coverage.The Kashmir earthquake occurred on October 8, 2005, registered a magnitude of 7.6 on the moment magnitude scale making it a major earthquake in pakistan history with estimated economic damage cause by this catastrophe is 5 billion$ and human damage more 200000 lives. For damage assessment caused by this earthquake an extensive field is carried out the affected areas soon after the earthquake. Based on field observation it is concluded that Balakot part of district Mansehra that was a famous tourist destination is the worst affected areas due to it location close to the Kashmir Thrust that causes this devastating earthquake. Another reason might be due to its litho logical and geomorphological setup.Due to which it faced more ground shaking during the earthquake and caused more damaged comparatively. The building structure and RCC roof were also responsible for human life damage in Balakot City. Balakot City is being divided into different zones based on homogeneity in building damages on quickbird Satellite Image in the field and for each zone different attributes were collected from the field. In GIS software zones were digitized and there attributes were linked to develop attributes maps. Balakot city is selected as a model for damage assessment the same methodology will be replicated in rest of the earthquake affected areas.