Llaima

Llaima
Yaima
The snowy cone of Llaima volcano
Highest point
Elevation 3,125 m (10,253 ft) [1]
Prominence 1,819 m (5,968 ft) [1]
Listing Region high point
Ultra
Coordinates 38°41′45″S 71°43′54″W / 38.69583°S 71.73167°W / -38.69583; -71.73167Coordinates: 38°41′45″S 71°43′54″W / 38.69583°S 71.73167°W / -38.69583; -71.73167 [1]
Geography
Llaima
Location in Chile
Location Melipeuco and Vilcún, Cautín Province, La Araucanía Region, Chile
Parent range Andes
Geology
Mountain type Stratovolcano
Last eruption 2008 to 2009

The Llaima Volcano is one of the largest and most active volcanoes in Chile. It is situated 82 km northeast of Temuco and 663 km southeast of Santiago, within the borders of Conguillío National Park.

Geography

The top of Llaima consists of two summits; the lower of the two, Pichillaima, is about 2,920 m (9,580 ft) high and is significantly less prominent than the higher northern summit.[2]

The average elevation of the terrain around Llaima is about 740 m asl.[2]

The volcano, along with Sierra Nevada, surrounds the Conguillío Lake. Its slopes are drained by the rivers Captrén, Quepe and Trufultruful.[2] The former ones are tributaries of Cautín River and the latter is affluent of Allipén River.

Eruptions

Llaima is one of Chile's most active volcanoes and has frequent but moderate eruptions. Llaima’s activity has been documented since the 17th century, and consists of several separate episodes of moderate explosive eruptions with occasional lava flows. A 1640 eruption is thought to have contributed to a pause in the Arauco War between the Spanish and Mapuches established at the Parliament of Quillín in 1641.[3] Possibly Mapuches interpreted the eruption as a signal sent from spirits known as pillanes.[3]

A 1874–76 eruption caused various lava flows, landslides, lahars, spread of volcanic ash. After this eruption the volcano became known as Llaima or Yaima.[4] Prior to that it had been known as Chañel a mapudungun in reference to the pointy shape of its summit before the eruption.[4]

The last major eruption occurred in 1994.[5] An eruption on January 1, 2008 forced the evacuation of hundreds of people from nearby villages. A column of smoke approximately 3000 m high was observed. An amateur caught the early eruption phase on video.[6] The volcanic ash expelled by Llaima travelled east over the Andes into Argentina. Ash fall was recorded in the area of Zapala, Neuquén Province, and forced the cancellation of flights to and from Presidente Perón Airport near the city of Neuquén.[7] On July 2, 2008, another eruption resulted in evacuation of 40 people from a 15 km exclusion zone.[8]

An eruption occurred on April 5, 2009, with pyroclastic flows, ash and lava seen on the slopes.

For the 2010–30 period an eruption of Volcanic Explosivity Index 2 or more is expected based on statistics.[9]

Recreation

The ski center Las Araucarias lies on the volcano's western slopes.

See also

References

  1. 1 2 3 "Argentina and Chile, Central Ultra Prominences". Peaklist.org. Retrieved 2013-07-16.
  2. 1 2 3 (in Spanish) Sernageomin. "Volcán Llaima". Archived from the original on 2007-04-29. Retrieved 2007-08-30.
  3. 1 2 Petit-Breuilh 2004, p. 53.
  4. 1 2 Petit-Breuilh 2004, p. 187.
  5. ↑ "Chile volcano forces evacuations". BBC. January 2, 2008.
  6. ↑ Volcan LLAIMA on YouTube
  7. ↑ "Cancelan vuelos en el aeropuerto de Neuquén por la erupción en Chile del volcán Llaima". Clarín. January 2, 2008.
  8. ↑ "Chile ski station evacuated as volcano erupts". Yahoo!News. July 2, 2008.
  9. ↑ Dzierma, Yvonne; Wehrmann, Heidi (2010). "Eruption time series statistically examined: Probabilities of future eruptions at Villarrica and Llaima Volcanoes, Southern Volcanic Zone, Chile". Journal of Volcanology and Geothermal Research. 193: 82–92. doi:10.1016/j.jvolgeores.2010.03.009.

Bibliography

  • Petit-Breuilh Sepúlveda, María Eugenia (2004). La historia eruptiva de los volcanes hispanoamericanos (Siglos XVI al XX): El modelo chileno (in Spanish). Huelva, Spain: Casa de los volcanes. ISBN 84-95938-32-4.
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