Co-convener and chair of session SE-58; Tsunami hazard of the Indian and Pacific Oceans, Asia-Oceania Geosciences Meeting (AOGS), Suntec, Singapore, 2009.
Field workshop on tsunami geology. Oman, 2008, sponsored by UNESCO-IOC
International symposium on the restoration program from giant earthquakes and tsunamis, Phuket, Thailand, 2008
UNESCO-IOC meeting on the Indian Ocean tsunami, Dubai, 2007.
Field workshop on tsunami geology. Sri Lanka, 2007.
American Geophysical Union (AGU), Fall Meeting, Lead convener of the session T-39 Earthquake and tsunami hazards around the Indian Ocean; 2007, San Francisco
UNESCO-IOC workshop on Methodologies for Indian Ocean tsunami hazard assessment, Bandung, Indonesia, 2007 (invited speaker).
IUGG XXIV 2007 Perugia, Italy (July 2-13, 2007): Co-convener of the session JAS 012 “Seismological geological and tectonic interpretation of geomagnetic anomalies on continents and oceans”
Association of Asia Oceania Geosciences Meeting (AOGS), session on “Restoration program from giant earthquakes and tsunamis”, 2007,
Association of Asia Oceania Geosciences Meeting (AOGS), on “Restoration program from giant earthquakes and tsunamis”, July 10-14, Singapore, Chaired a session “Recent earthquakes and tsunamis in Asia and Oceania”.
Chapman Conference on “Active Tectonics and Seismic Potential of Alaska”, Girdwood, Alaska, USA, 2006.
American Geophysical Union Fall Meeting. San Francisco, 2005. Co-Convener and session chair of the special session on Interdisciplinary studies of the Dec. 26th 2004 great Sumatra-Andaman earthquake and tsunami.
Memorial Conference on Indian Ocean Tsunami, 2005 Tokyo, Japan, Invited speaker.
Association of Exploration Geo Scientists (AEG), Pune, 2005, Invited Speaker and session chair on 2004 Sumatra earthquake.
Convener, two day workshop-cum-field trip on “Seismicity and tectonics of the Andaman &Nicobar subduction zone” at Port Blair, sponsored by Department of Science and Technology during August 11 and 12, 2005.
Field Workshop on tsunami paleogeology, Chile, February 02-26, 2005, at the invitation of the U.S. Geological Survey.
32nd International Geological Congress, Florence, Italy, August 20-29, 2004.
Workshop on tectonic geomorphology, May 4-7, 2004, IIT Kanpur (invited speaker).
Workshop on current Practices and future trends in earthquake geotechnical engineering, 23-24, December 2003. Indian Institute of Sciences, Bangalore (invited speaker).
Indo-U.S. Workshop on seismicity and geodynamics, Oct. 6-10, 2003, National Geophysical Research Institute, Hyderabad (keynote speaker).
International meeting on the Bhuj earthquake, IIT, Kanpur; invited speaker; January 26-27, 2003.
Meeting on coping with natural disasters, National Science Academy of India, Pune, Oct. 5-6, 2001
International School of Geophysics, Erice, Sicily, Italy, July 5-9, 2001. ‘Recognizing seismogenic sources in India’ (invited speaker).
International Symposium and School on earthquake faulting- Hokudan, Japan, Jan. 17-26, 2000 (International Lithosphere Program).
AGU Chapman Conference on Seismicity of Stable Continental Interiors, Jan. 25-29, 1998, Hyderabad,
Second Meeting of the Asian Seismological Commission, 1-3 December 1998, Hyderabad.
Penrose Conference on Tectonics of Continental Interiors, Geological Society of America, September 1997, Utah, USA.
The interaction meet of active young Earth scientists of India at Jammu, sponsored by the Department of Science and Technology, August 21-23, 1995.