2007 Aysén Fjord earthquake
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| Date | April 21, 2007 |
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| Magnitude | 6.2 Mw |
| Depth | 38,1 km |
| Epicenter | Aisén Fjord, Aysén Region, Chile |
| Areas affected | Chile |
| Landslides | Yes |
| Casualties | 10 killed |
The Aisén Fjord earthquakes were a series of seismic events of different magnitudes that occurred in Aisén Fjord, Chile from January 22–April 22, 2007. The biggest occurred at 1:53 p.m. (local time) on April 21 and reached a felt intensity of VII (very strong) on the Mercalli intensity scale.[1] On the moment magnitude scale, the earthquake reached a gradation of 6.2. Ten people disappeared, according to ONEMI (Chile's National emergency office), but three bodies were found on April 22 by the Navy of Chile.
On the mountains around the fjord, the earthquake caused landslides that in turn created waves as high as six meters, which severely damaged some salmon aquaculture installations.[1] The potable water systems of the cities of Puerto Chacabuco and Puerto Aisén were broken, forcing firefighters and the army to supply water. The electricity network of Puerto Chacabuco was also cut off by the temblor.
The earthquake expanded to several zones of the country. At 6:22 a.m. (local time) on April 22, an intense earthquake was felt in Santiago, reaching II (Weak) on the Mercalli intensity scale.
Despite protests against the government organized by Aysen's mayor, Chile's president, Michelle Bachelet, visited the affected zone. She was met with black flags, and, during the protest, Aysen's mayor Óscar Catalán was arrested. Catalán had been heavily critical that the region had not received the necessary help to prevent damage and casualties during the earthquake, as there had been minor earthquakes since January.
According to ONEMI, the following cities and town in Aysén del General Carlos Ibáñez del Campo Region were affected by the latest earthquake. The Roman numerals show the intensity on the Mercalli intensity scale.
- Puerto Chacabuco VII
- Puerto Aisén VII
- Coihaique VI
- Balmaceda V
- Cochrane IV
Seismic movements and events before April 21
Starting January 22, 2007, Aysén Fjord suffered a series of minor earthquakes. The greatest before April 21, 2007 reached VI (Strong) on the Mercalli intensity scale and occurred at 3:44 p.m. on April 14, 2007. Local fishermen reported seeing steam rising from the fjord.
See also
Sources
References
- 1 2 "Informe No.173 - 21/04/2007 Sismo XI Región (Informe Preliminar - Actualiza Información)". ONEMI. Archived from the original on 23 April 2007. Retrieved 2007-04-21.
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