A
series of minor tremors were felt in south-central Maharashtra, in the town of
Nanded
(population 4,30,733) on 24 October 2010 and continued
until the end of the month. Local residents
said as many as twenty events were felt with or without loud
explosive sounds beginning around 3 AM on 24 October 2010. No
damage has been reported from this sequence. In
2007-2008 the same town was
struck by a prolonged sequence of tremors that caused minor damage
and widespread anxiety.
If you have felt any of these tremors please
fill out this questionnaire. Please make sure
you mention the TIME & DATE when you felt these tremors. For
information on earthquake precautions & safety measures
please see the
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Earthquake Safe!
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Earthquakes swarms can be defined as a series of earthquakes in
the same magnitude range that are closely spaced in time and
originating in the same region but devoid of a mainshock
(principal large event). They can last from as little as a few
hours to as long as several months (eg. Matsushiro, Japan,
1965-1966). Swarms can be precursory or non-precursory but
establishing either is only feasible in hindsight.
Earthquake swarms have occurred in other parts of India
including
Jind (Haryana) in 2003 and
Bhavnagar (Gujarat) in 2000.
In Nanded, a previous swarm occurred in 2007
and continued into 2008 causing some damage as well as widespread
panic. The exact cause of the subterranean sounds is
not clear. It is a
possibility that they are similar to Brontides or "Barisal Guns"
often heard in Bengal. Such occurrences have been reported from
other parts of Maharashtra in the last decade, eg. Bansur in 1996.
24
October 2010
On this date, felt reports sent in to the the ASC report the
occurrence of tremors from 3 AM IST, with as many as twenty
occurring until 6 AM Ist. Media reports say these were felt
intermittently until the afternoon of the same day.
Strong shocks were
widely felt in Nanded at 4:53 AM, 5:20 AM, 5:28 AM and 5:49 AM.
The event at 4:53 AM was felt with an intensity of EMS 4 in
Viveknagar shaking people awake and causing hanging objects to
swing. The event at 5:20 AM was felt at EMS 5 at the Kapus
Sanshodhan Kendra (cotton factory) as well as at Shri Nagar and Viveknagar. In
Viveknagar, this was felt very strongly for for 7-8 seconds,
shaking furniture and frightening animals indoors. In Snehnagar,
people were woken up by this tremor that moved light furniture,
frightened animals outdoors, shook hanging objects and formed
hairline cracks in walls. The 5:28 AM event rattled windows and
knocked kitchen utensils off shelves in a few instances. At 6:24
AM a mild tremor was felt by a few people in Viveknagar for two
seconds that made some people dizzy. At 6:48 AM, another strong
tremor was felt in many parts of Nanded. In the Viveknagar area it
was felt by everyone, animals were frightened, furniture was
shaken and hanging objects were shaken considerably. In the Shri
Nagar area, it was felt by all. Hairline cracks formed in some
buildings, furniture was shaken and animals outdoors were
frightened.
According to local
officials, the tremors were felt in most part of Nanded including
at Anandnagar, Arvindnagar, Ashoknagar, Bhagyanagar, Kushininagar,
Lalwad, Lumbininagar, Mahavir Society, Mantrinagar, Narayannagar,
Nizam Colony, Parasnagar, Police Colony, Prabhatnagar, Sai Colony,
Sarpanchnagar, Shravastinagar, Shri Nagar, Snehnagar, Taroda,
Vamannagar, Viveknagar, Wazirabad. Apart from the event outlined
above tremors were also reported at 05:05, 05:08, 05:35, 06:31,
06:39, 06:51, 06:57, 10:14, 10:16, 10:17, 12:34, 12:39, 13:04,
13:15 and 13:19. Several people in the Prabhatnagar, Shri Nagar
and Viveknagar areas are believed to have left those areas for a
few days.
25
October 2010
On this date, felt reports sent in to the the ASC report the
occurrence of tremors that were felt in Anand Nagar around 5:15 AM
that visibly shook furniture and was felt by many people.
26
October 2010
On this date, felt reports sent in to the the ASC report the
occurrence of tremors that were felt in Vivek Nagar around 00:04
AM that was felt by many people.
27
October 2010
On this date, felt reports sent in to the the ASC report the
occurrence of tremors that were felt in the Mahavir Society area
of Nanded at 19:15 and 20:15 along with three loud sounds.
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