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Joshi G.C.,Disaster Mitigation and Management Center | Sharma M.L.,Indian Institute of Technology Roorkee
International Journal of Geotechnical Earthquake Engineering

In the present study the authors evaluate uncertainties in the seismic hazard assessment for the Northern Indian region, based on the probabilistic seismic hazard analysis (PSHA). The newly compiled earthquake data has been treated for the quality, consistency, and homogeneity in a systematic manner to find out the uncertainties in every step of calculations. Based on the geological and tectonic setup, seismicity and other geophysical anomalies, a seismotectonic model of the region has been developed. The seismic hazard parameters are calculated based on giving proper weight to specific region. The peak ground acceleration (PGA) is estimated for various return periods for the Northern Indian region using a logic tree approach. The variation at the input level in terms of the source models and different Ground Motion Prediction Equations (GMPEs) is used. To examine into the effect of source modelling and GMPEs, the Coefficient of Variation (COV) maps have been generated. To encompass the region and for better resolution, the peak ground acceleration (PGA) is estimated at 15 minute intervals. The COV values due to all branch points in the logic tree decrease with distance from the source and conspicuous increase toward fault boundaries are observed. Copyright © 2011, IGI Global. Source

Rautela P.,Disaster Mitigation and Management Center
International Journal of Disaster Risk Reduction

Despite enhanced awareness on various disaster management related issues and mounting disaster induced losses disaster risk reduction is far from getting its due share of attention and resources, particularly in India. This is attributed to (i) departmental inertia, (ii) lacking political foresight and will, (iii) fragmented decision-making authority, (iv) lacking techno-legal regime and non-compliance of what exists, (v) lack of capacity building, (vi) unawareness of the mass, (vii) lacking risk assessment and communication, (viii) missing locally relevant data and examples, and (ix) lack of objective and uniform disaster database. Based upon in depth analysis of the present situation recommended road map for DRR inclusive development includes (i) enhanced focus on mass awareness to ensure voluntary compliance and to do away with political apathy, (ii) comprehensive hazard, vulnerability and risk assessment and communication, (iii) enhanced investment on research and development related to disaster resilient technology and improvising traditional DRR practices, (iv) enhanced investment on capacity building, (v) invoking DRR compliant techno-legal regime and putting in place mechanism for its compliance, (vi) NDMA and SDMA to be provided authority to issue binding guidelines, (vii) institutional mechanism for collecting precise and objective data relating to disaster induced losses. Action on the suggested points is envisaged to streamline DRR interventions in India and help in bringing forth resilience amongst communities. © 2015 Elsevier Ltd. Source

Naithani S.,Doon University | Mathur V.B.,Wildlife Institute of India | Rotella P.,Disaster Mitigation and Management Center
Ecology, Environment and Conservation

The resource mapping and its management is an important aspect of wildlife management programme. The water availability and it sustainability is considered as an important parameter for wildlife habitat security. The efforts were made in this study to elaborate the hydrogeomorphological potential zone mapping of Pench tiger reserve, Madhya Pradesh, India. The total area of tiger reserve is around 757.85 sq km. The interpretation and mapping was based upon geomorphology, geology and lineaments. For geomorphic and ground water prospect mapping of entire area was prepared mainly through IRS IC LISS III April, 1999 satellite data (hard copies) on 1:50,000 scale with combination of topographical details and the area calculation was done in GIS domain. Out of 20 geomorphic units the alluvial plains (31.89 Sq.km), buried pediment (83.23 Sq.km) and pediments (173.03 Sq. km) were found most suitable areas for the ground water conditions. The dug well data for Pediment, Berried Pediment and for Alluvial Plains were shown on an average depth 11 feet, 19 and 9 feet depth of water from the surface respectively. The lineaments control the movement and storage of ground water. The concentrations of lineaments (calculated about 309) were in SE part of the study area might help to improve the water carrying capacity of the area. Results suggested that ground water prospect mapping can help the wild life manager to conserve the wildlife in effective manner. Source

Joshi G.C.,Disaster Mitigation and Management Center | Kumar R.,Indian Institute of Technology Roorkee
Journal of Building Appraisal

Rapid visual screening (RVS) can be effectively used to evaluate the vulnerability of a large number of buildings with less computational effort. In this study, a seismic vulnerability assessment is conducted for all municipal wards in Mussoorie town, Uttarakhand, India. Various structural parameters of the building, like structure type, number of stories, soil type, age and roof type and non-structural parameters like occupancy, use and owner name have been collected. Further, seismic vulnerability of every individual building in the town has been assessed. The data collection form of the Federal Emergency Management Agency, FEMA 154 for RVS was modified to suit local conditions and was utilized for this purpose. Using satellite image all of the buildings are mapped in a GIS and a damage probability matrix is used to estimate the effects of an earthquake. The buildings are classified in five categories of seismic vulnerability. The data of Mussoorie town show that a total of 623 buildings (about 20 per cent of those surveyed) show a high probability of Grade 5 damage and a very high probability of Grade 4 damage, whereas 587 buildings (about 19 per cent of those surveyed) show a high probability of Grade 4 damage and a very high probability of Grade 3 damage in case of earthquake shaking of Intensity VIII or more in MSK scale. © 2010 Macmillan Publishers Ltd. Source

Rautela P.,Disaster Mitigation and Management Center
International Journal of Disaster Risk Reduction

Indepth study of traditional resource management practices of the indigenous people of Uttarakhand Himalaya reveals their appreciably advanced understanding of the causes of various hazards. Through their continued keen observation, experimentation, innovation and recordkeeping these people devised techniques of maximizing resource availability while minimizing the wrath of the hazards. For ensuring universal compliance of the rules so laid down these people relied on social sanctions and religio -magical practices interwoven around little tradition of the people. With weakening social solidarity in the recent times these practices are fast loosing ground and if adequate steps are not taken for documention this rich knowledge of generations could well be lost forever. These practices are highly relevent even today and hold the key to minimizing losses due to natural hazards in a cost effective and sustainable manner and are therefore required to be studied, documented and dovetailed with modern science and technology. © 2015 Elsevier Ltd. Source

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