earthquake (M3.0 to 3.9 termed as "mild")
occurred in the Kaveri basin in Ariyalur
district, Tamil Nadu on 12 August 2011 at
11:36 AM local time in India. It
had a magnitude of M?=3.5 and was felt in several districts in
southern Tamil Nadu. It was blamed for one death and minor damage
in the districts of Kudalur, Perambalur, Tiruchirapalli and
The earthquake was centred
5.3 kms SSE of
Ariyalur (Tamil Nadu), India,
19.3 kms SW of Sendurai (Tamil Nadu), India,
33 kms NW of Kumbakonam (Tamil Nadu), India,
34.6 kms N of Thanjavur (Tamil Nadu), India,
54.3 kms NE of Tiruchirapalli (Tamil Nadu), India,
85.9 kms NE of Pudukottai (Tamil Nadu), India,
104 kms SW of Kudalur (Tamil Nadu), India,
121 kms ESE of Salem (Tamil Nadu), India,
170 kms NE of Madurai (Tamil Nadu), India,
255 kms SW of Chennai (Tamil Nadu), India.
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A 65-year old man died
of a heart attack in Periya Siruvathur
near Kallakurichi in Villupuram district as a result of this
Shaking was felt
in several districts in southern Tamil Nadu such as Kudalur (Cuddalore),
Namakkal, Perambalur, Salem, Thiruchirapalli and Villupuram. In
Salem district mild tremors were felt at Arasanur, Athur,
Manivilundan, Periyeri, Thalaivasal and Viranur. Several buildings
developed cracks in Salem district.
Strong tremors were felt
in Perambalur district causing panic and people ran outdoors. The
wall of a building developed cracks near Valikantapuram.
The entrance of a house was also
damaged at Valikanthapuram while elsewhere loose objects were
knocked over in a Shiva temple. Elsewhere in the district it
was felt at Eraiyur, Palaiyur, Veppanthattai and Venpavur.
In Tiruchirapalli district, people in the city of
Thiruchirapalli (Trichy) went outdoors in panic. Several students at
Ramakrishnan Engineering college ran outdoors in panic. It was also felt at
Lalgudi, Siruganur, Thuvakudi, Uraiyur and Valayur Road. Elsewhere
in the district it was felt at Kannamangalam. In a few places loose
objects were knocked down.
In Villupuram it was
felt at Chinnasalem, Kanankur, Kallakurichi, Neyvannai,
Palarampattu, Thiyagadurgam and
Ulunthurpet. At Ulundurpet, people ran outdoors in panic. In
Thiyagadurgam, students at a training institute at Vadathorasalur
fled their building.
In Kudalur district it was felt
at Alampatti, Avatti and Thittakudi among other places. People ran
outdoors and schools were also closed in the district. Tremors were
also felt in some parts of Madurai district.