O.P. Mishra

Work place: SAARC Disaster Management Centre (SDMC), IIPA Campus, Ring Road Delhi and Geo-Seismology Division, Geological Survey of India (CHQ), Kolkata,India



Research Interests: Earth Sciences, Earth & Environmental Sciences


Dr O.P. Mishra obtained Doctor of Science (D.Sc.) in 2004 from Geodynamics Research Center, Ehime University, Japan for his outstanding research in the field of seismic tomography and tsunami generating mechanis m in north-east Japan and Indian regions. His Ph.D study in Japan covered the Environmental Science with special emphasis to earthquake shaking and strong past tsunamigenic earthquakes of the NE Japan forearc region where the 2011 great Tohoku earthquake (Mw 9.0) occurred. He has degree of Master of Science & technology (M.Sc. Tech) in the Applied Geophysics from Indian School of Mines, Dhanbad in 1990, besides B.Sc (Hons) in Chemistry from the University of Burdwan, West Bengal, India. He is an expert of Applied Geophysics and solid earth science dealing with seismological research and disaster risk management system and dynamic of earthquake generating processes. Dr. Mishra authored more than 100 peered reviewed research papers, concept notes, and reports of national and international repute. He has edited several books on different themes of Natural Disasters. Currently, he is on deputation from Geological Survey of India as HEAD to SAARC Disaster Management Center; An Inter - Governmental organization of 8- South Asian countries (Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, Sri Lanka). He is the recipient of “National Mineral Award”-2008 by the Government of India in the field of “Disaster Management” under applied Geosciences. He is well known peered reviewers, members in editorial board and panelist of UN agencies on leading edge research and management for several international organizations of Geosciences and Disaster management, such as UNISDR, UNOCHA,UNESCAP, UNDP, ADRC, ADPC, USAID, ECO and many others.

Author Articles
A Method for Post-hazard Assessment Through Topography Analysis using Regional Segmentation for Multi-temporal Satellite Imagery: A Case Study of 2011 Tohuku Earthquake Region

By Pushan Kumar Dutta O.P. Mishra M.K.Naskar

DOI: https://doi.org/10.5815/ijigsp.2013.10.08, Pub. Date: 8 Aug. 2013

Non-rigid image registration in extracting deformation map for two satellite images of the same region before and after earthquake occurrence based on measure of intensity dissimilarity C(Ir, T(If)) can play a significant role in post hazard analysis. In this paper, we have proposed a novel image transformation and regional segmentation of the same visualized region by assigning displacement label to change in intensity using Advanced Synthetic Aperture Radar (ASAR) satellite images. We used graph cut based non rigid registraion with a data term and a smoothness term for assigning markovianity between neighboring pixels. Displacement labels has been directly assigned from this data term for small intensity difference. Secondly, our data term imposes stricter penalty for intensity mismatches and hence yields higher registration accuracy.
Based on the satellite image analysis through image segmentation, it is found that the area of .997 km2 for the Honshu region was a maximum damage zone localized in the coastal belt of NE Japan fore-arc region. A further objective has been to correlate fractal analysis of seismic clustering behavior with image segmentation suggesting that increase in the fractal dimension coefficient is associated with the deviation of the pixel values that gives a metric of the devastation of the de-clustered region.

[...] Read more.
Other Articles