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{{Infobox earthquake
|title = 1947 Assam earthquake
|image =
|image alt =
|imagecaption =
|map =
|map alt =
|image name =
|map2 = {{Location map | India
| relief = yes
| label =
| lat = 28.50
| long = 94.00
| mark = Bullseye1.png
| marksize = 40
| position = bottom
| width = 250
| float = none
| caption = }}

|timestamp = 1947-07-29 13:43:24
|isc-event = 897970
|anss-url = iscgem897970
|local-date = {{Start date|1947|07|29}}
|local-time = 18:43:24
|duration =
|magnitude = 7.3 {{M|w|link=y}} <ref name=Engdahl/>
|depth = 60 km
|location = {{Coord|28.50|N|94.00|E}} <ref name=Engdahl/>
|epicenter =
|type =
|countries affected =
|damage =
|intensity = [[European macroseismic scale|V (''Strong'')]]<ref name=Martin/>
|PGA =
|tsunami =
|landslide =
|aftershocks =
|casualties =
}}

The '''1947 Assam earthquake''' occurred on 29 July at 13:43 UTC with an {{M|w|link=y}} of 7.3 and a maximum [[European macroseismic scale|EMS-98 intensity]] of V (''Strong'').

==Earthquake==
The earthquake was located near the border between [[India]] and [[Tibet]]. Some sources put the epicenter in Indian, and some put it in Tibet.<ref>{{citation|title=Significant Earthquake Database|url=https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1|author=National Geophysical Data Center / World Data Service (NGDC/WDS)|publisher=[[National Geophysical Data Center]], [[National Oceanic and Atmospheric Administration|NOAA]]|doi=10.7289/V5TD9V7K|year=1972|type=Data Set}}</ref><ref name="nic">{{cite web|url=http://aasc.nic.in/course%20material/Disaster/documentation%20on%20past%20disasters.pdf|archive-url=https://web.archive.org/web/20170117213454/http://aasc.nic.in/course%20material/Disaster/documentation%20on%20past%20disasters.pdf|url-status=dead|archive-date=2017-01-17|title=Documentation on past disasters, their impact, measures taken, vulnerable areas in Assam|author=AASC|publisher=[[Assam Administrative Staff College]]|page=9}}</ref> The released seismic moment was about 1.5×10<sup>20</sup> Nm.<ref>{{citation|title=Instantaneous deformation and kinematics of the India-Australia Plate|journal=Geophysical Journal International|volume=168|issue=2|pages=818|year=2007|last1=Delescluse|first1=M.|last2=Chamot-Rooke|first2=N.|bibcode=2007GeoJI.168..818D|doi=10.1111/j.1365-246X.2006.03181.x|doi-access=free}}</ref> The mechanism of the earthquake is not well known.<ref>{{cite journal|title=Fractal analysis of major faults in India on a regional scale|url=http://www.geosocindia.org/abstracts/2011/sept/sep2k11/j-d-09-00084.pdf|first1=P.|last1=Sengupta|first2=S. K.|last2=Nath|first3=K. K. S.|last3=Thingbaijam|first4=S.|last4=Mistri|year=2011|journal=Journal of the Geological Society of India|volume=78|issue=3|page=229|doi=10.1007/s12594-011-0086-4|s2cid=129791639}}</ref> In the Chinese literature, this earthquake was often located around the [[Nang County]], [[Tibet]].<ref>"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</ref>

==Damage==
In [[Dibrugarh]], [[Jorhat]], and [[Tezpur]], there were cracks in walls. Failure of electricity was reported in [[Guwahati]].<ref name="nic"/>

==Other seismicity==
The border region was struck by the much larger 8.6 {{M|w}} [[1950 Assam–Tibet earthquake|Assam–Tibet earthquake]] three years later, on August 15, 1950.

==See also==
* [[List of earthquakes in 1947]]
* [[List of earthquakes in India]]

== References ==
{{reflist|refs=
<ref name=Engdahl>{{cite book|title=International Handbook of Earthquake & Engineering Seismology |series=Part A, Volume 81A |chapter=Global seismicity: 1900–1999 |first1=E. R. |last1=Engdahl |first2=A. |last2=Vallaseñor |year=2002 |chapter-url=https://earthquake.usgs.gov/data/centennial/centennial.pdf |publisher=[[Academic Press]] |edition=First |isbn=978-0124406520 |page=679 }}</ref>
<ref name=Martin>{{citation|title=A Catalog of Felt Intensity Data for 570 Earthquakes in India from 1636 to 2009|url=http://www.bssaonline.org/content/100/2/562.abstract|first1=S.|last1=Martin|first2=W.|last2=Szeliga|year=2010|journal=Bulletin of the Seismological Society of America|series=Electronic Supplement (table S2)|volume=100|number=2|pages=562–569|doi=10.1785/0120080328|bibcode=2010BuSSA.100..562M}}</ref>
}}

==External links==
*{{EQ-isc-link|897970}}

{{Earthquakes in China}}
{{Earthquakes in India}}
{{Himalayan earthquakes}}

{{#seo:
|keywords=1947 in India, 1947 in China, 1940s in Assam, Disasters in Assam, History of Tibet
|description=
}}

[[Category:1947 earthquakes|Assam earthquake, 1947]]
[[Category:1947 in India]]
[[Category:1947 in China]]
[[Category:Earthquakes in India|1947]]
[[Category:Earthquakes in Tibet|1947]]
[[Category:1940s in Assam]]
[[Category:Disasters in Assam]]
[[Category:History of Tibet]]
[[Category:Earthquakes in Assam|1947]]

1947 Assam earthquake - Revision history

MetaBOT at 14:03, 8 July 2023