1947 Assam earthquake

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
1947 Assam earthquake
1947 Assam earthquake is located in India
1947 Assam earthquake
UTC time1947-07-29 13:43:24
ISC event897970
Local dateJuly 29, 1947 (1947-07-29)
Local time18:43:24
Magnitude7.3 Mw [1]
Depth60 km
Epicenter28°30′N 94°00′E / 28.50°N 94.00°E / 28.50; 94.00 [1]
Max. intensityV (Strong) [2]

The 1947 Assam earthquake occurred on 29 July at 13:43 UTC with an Mw of 7.3 and a maximum EMS-98 intensity of V (Strong).


The earthquake was located near the border between India and Tibet. Some sources put the epicenter in Indian, and some put it in Tibet.[3][4] The released seismic moment was about 1.5×1020 Nm.[5] The mechanism of the earthquake is not well known.[6] In the Chinese literature, this earthquake was often located around the Nang County, Tibet.[7]


In Dibrugarh, Jorhat, and Tezpur, there were cracks in walls. Failure of electricity was reported in Guwahati.[4]

Other seismicity[edit]

The border region was struck by the much larger 8.6 Mw Assam–Tibet earthquake three years later, on August 15, 1950.

See also[edit]


  1. ^ a b Engdahl, E. R.; Vallaseñor, A. (2002). "Global seismicity: 1900–1999". International Handbook of Earthquake & Engineering Seismology (PDF). Part A, Volume 81A (First ed.). Academic Press. p. 679. ISBN 978-0124406520.
  2. ^ Martin, S.; Szeliga, W. (2010), "A Catalog of Felt Intensity Data for 570 Earthquakes in India from 1636 to 2009", Bulletin of the Seismological Society of America, Electronic Supplement (table S2), 100 (2): 562–569, Bibcode:2010BuSSA.100..562M, doi:10.1785/0120080328
  3. ^ National Geophysical Data Center / World Data Service (NGDC/WDS), Significant Earthquake Database, National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
  4. ^ a b AASC. "Documentation on past disasters, their impact, measures taken, vulnerable areas in Assam" (PDF). Assam Administrative Staff College. p. 9.
  5. ^ Delescluse, M.; Chamot-Rooke, N. (2007), "Instantaneous deformation and kinematics of the India-Australia Plate", Geophysical Journal International, 168 (2): 818, Bibcode:2007GeoJI.168..818D, doi:10.1111/j.1365-246X.2006.03181.x
  6. ^ Sengupta, P.; Nath, S. K.; Thingbaijam, K. K. S.; Mistri, S. (2011). "Fractal analysis of major faults in India on a regional scale" (PDF). Journal of the Geological Society of India. 78 (3): 229. doi:10.1007/s12594-011-0086-4.
  7. ^ "青藏块体8级左右地震前中强地震活动图像的相似性演化" by 朱红彬

External links[edit]