1947 Assam earthquake

1947 Assam earthquake

UTC time	1947-07-29 13:43:24
ISC event	897970
USGS-ANSS	ComCat
Local date	July 29, 1947 (1947-07-29)
Local time	18:43:24
Magnitude	7.3 Mw[1]
Depth	60 km
Epicenter	28.50°N 94.00°E / 28.50; 94.00[1]
Max. intensity	EMS-98 V (Strong)[2]

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

Earthquake

The earthquake was located near the border between India and Tibet. Some sources put the epicenter in India, 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]

Damage

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

Other seismicity

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

See also

• List of earthquakes in 1947
• List of earthquakes in India

References

1. Engdahl, E. R.; Vallaseñor, A. (2002). "Global seismicity: 1900–1999" (PDF). International Handbook of Earthquake & Engineering Seismology. 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, archived from the original on 2016-11-12, retrieved 2017-12-24
3. National Geophysical Data Center / World Data Service (NGDC/WDS) (1972), Significant Earthquake Database (Data Set), National Geophysical Data Center, NOAA, doi:10.7289/V5TD9V7K
4. AASC. "Documentation on past disasters, their impact, measures taken, vulnerable areas in Assam" (PDF). Assam Administrative Staff College. p. 9. Archived from the original (PDF) on 2017-01-17.
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. Bibcode:2011JGSI...78..226S. doi:10.1007/s12594-011-0086-4. S2CID 129791639.
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

• The International Seismological Centre has a bibliography and/or authoritative data for this event.