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2012 Shwebo earthquake

6.8 magnitude earthquake in central Myanmar

Field	Value
title	2012 Shwebo earthquake
map2	{{Location map	Burma	relief=1
AlternativeMap	Myanmar relief location map.jpg
lat	23.014
long	95.883
mark	Bullseye1.png
marksize	40
position	top
width	200
float	center
caption	}}
timestamp	2012-11-11 01:12:40
isc-event	601885134
anss-url	usp000jvbq
local-date
local-time	07:42:40 MMT
magnitude	6.8
depth	9.8 km
location
countries affected	Burma
intensity
PGA
casualties	26 dead + 12 missing

| isc-event = 601885134 | anss-url = usp000jvbq | local-date = | local-time = 07:42:40 MMT

The 2012 Shwebo earthquake occurred at 07:42 local time (01:12 UTC) on 11 November in Myanmar. It had a magnitude of 6.8 on the moment magnitude scale and a maximum perceived intensity of VIII (Severe) on the Mercalli intensity scale. The epicenter was near the town of Male, 52 km NNE of the city of Shwebo, 64 km west of Mogok and 120 km north of Mandalay. Significant damage and possible casualties have been reported from near the epicenter, with up to 26 people dead and many more injured. Part of a bridge under construction fell into the Irrawaddy River near Shwebo and a gold mine collapsed at Sintku. An aftershock with a magnitude of 5.8 followed at 17:24 local time (10:54 UTC).

Tectonic setting

Central Burma lies within the complex zone of collision between the Indo-Australian plate and the Eurasian plate. In this area the collision is highly oblique and much of the plate convergence is accommodated by right lateral strike slip faults, of which the largest is the north–south trending Sagaing Fault, which takes up 18 mm per year of this movement.

Earthquake

The earthquake was caused by right lateral movement on the Sagaing Fault between Singu and Tagaung, with a preliminary estimated rupture length of 60–70 km, and was followed by three large (M≥5) aftershocks in the area south of the mainshock epicenter, and one to the north.

A detailed and thorough evaluation of the event suggest the rupture was estimated at 45-km-long and on the Sagaing Fault zone. Centroid moment tensor solution suggested the earthquake ruptured a north–south trending and sub-vertical fault that steeply dipped to the east.

Surface ruptures associated with the earthquake was well defined for 45 km. The earthquake had produced a maximum slip of 1.02 meters at a location north of Thabeikkyin.

Damage

Many buildings, including monasteries, pagodas, a hospital, and a school collapsed in Male and neighbouring villages. Damage was also reported from Shwebo, Mogok and Mandalay. The Radana Thinga Bridge, which was still under construction, fell into the Irrawaddy River, and several workers went missing.

References

Bangkok Post. (13 November 2012). "Myanmar quake's death toll rises". [[Bangkok Post]].
(11 November 2012). "M6.8 – 52 km NNE of Shwebo, Myanmar". United States Geological Survey.
(11 November 2012). "Burma earthquake leaves at least 12 feared dead". The Guardian.
(11 November 2012). "Burma earthquake: At least 12 feared dead". BBC News.
"M5.8 – 29 km NE of Shwebo, Myanmar". United States Geological Survey.
(12 May 2012). "Magnitude 6.9 – MYANMAR:Earthquake Summary". United States Geological Survey.
Myanmar Earthquake Committee. (11 November 2012). "Male (မလယ္) Earthquake (11-11-2012), Myanmar".
(11 November 2012). "M5.6 – 62 km WNW of Mogok, Myanmar". United States Geological Survey.
(2017). "Myanmar: Geology, Resources and Tectonics". Geological Society, London, Memoirs.
Aung Hla Tun. (11 November 2012). "Strong quake in central Myanmar kills at least six". Reuters.

Info: Wikipedia Source

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