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Today in Earthquake History

Today in Earthquake History

Today's Earthquake Fact:
The term seismic seiche was first coined by Anders Kvale in 1955, to describe oscillation of lake levels in Norway and England caused by the Assam earthquake of August, 1950.

August   15

Note: All earthquake dates are UTC, not local time.


Year Location Magnitude Comment
1950 Near Zhamo (Rima), Xizang (Tibet), China

Epicenter
8.6 The "Assam-Tibet" Earthquake
1,526 deaths.
One of the Largest Earthquakes in the World.
At least 780 people killed and many buildings collapsed in the Nyingchi-Qamdo-Zhamo (Rima, Zayu) area of eastern Tibet. Sandblows, ground cracks and large landslides occurred in the area. In the Medog area, the village of Yedong slid into the Yarlung Zangbo (Brahmaputra) River and was washed away.
The quake was felt at Lhasa and in Sichuan and Yunnan Provinces, China. Severe damage (X) also occurred in the Sibsagar-Sadiya area of Assam, India and in the surrounding hills. About 70 villages were destroyed in the Abor Hills, mostly by landslides. Large landslides blocked the Subansiri River. This natural dam broke 8 days later, creating a wave 7 m (23 ft) high which innundated several villages and killed 536 people. The quake was felt (VI) as far away as Calcutta. Seiches were observed in many lakes and fjords of Norway and in at least 3 reservoirs in England. Many sources call this the Assam-Tibet earthquake or even the Assam earthquake, even though nearly all place the epicenter in Tibet. Thus it is possible that the casualties for Tibet are not included in the total, as well as those from the Subansiri River flood. Furthermore, Gu et al. do not give casualty totals for Yedong or other areas of the most severe damage in Tibet. Therefore, the actual casualty toll may be much higher than the value given.
See: the 1950 earthquake in Arunachal Pradesh.
1966 Rockville, Maryland   The National Earthquake Information Center established.

"The NEIC was established at the headquarters of the Environmental Science Services Administration (ESSA) in Rockville, Maryland, to provide an improved source of information for the public and technical user. The first new service was the establishment of the Earthquake Early Reporting System to inform the public, disaster relief agencies, and scientists of earthquakes of magnitude 6 1/2 or larger as quickly as they have been located, usually within two or three hours."

From Earthquake Information Bulletin, Volume 1, Number 1, March 1967.
1985 Hungary

Epicenter
4.9 Moderate damage (VII) in the Berhida-Peremarton area. Slight damage at Budapest. Felt throughout western Hungary. Felt (VI) at Komarno, (V) at Nove Zamky and Hurbanovo and (IV) at Bratislava, Czechoslovakia. Also felt at Zagreb, Yugoslavia and (III) in Burgenland and at Vienna, Austria.
From Significant Earthquakes of the World, 1985.
2007 Near the Coast of Central Peru

Epicenter
8.0 At least 514 people killed, 1,090 injured and more than 39,700 buildings damaged or destroyed. The majority of the casualties and damage occurred in Chincha Alta, Ica and Pisco. Widespread communication and power outages occurred in the area. The Panamerican Highway, the Carretera Central and other main transport routes were heavily damaged due to landslides and cracks. Felt (IX) at Chincha Alta and Pisco; (VII) at Ica and San Vicente de Canete; (VI) at Lima; (V) at Cusco; (IV) at Arequipa; (III) at Trujillo. Felt at Abancay, Ayacucho, Cajamarca, Chaclacayo, Chillca, Chimbote, Chosica, Cocachacra, Huacho, Huanuco, Huaraz, Huarmey, Imperial, La Oroya, Lambayeque, Mala, Nazca, Nuevo Imperial, Pachacamac, Pucallpa, Quillabamba, San Luis, Urubamba and Viru. Felt (III) at Bogota, Colombia and (II) at La Serena, Chile. Also felt at Coquimbo and Iquique, Chile; at Guayaquil and Quito, Ecuador; at La Paz, Bolivia and at Manaus, Brazil. Possible earthquake lights observed at Lima.
From Significant Earthquakes of the World, 2007.

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