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stratovolcan 5592 m / 18,346 ft
Northern Chile, -23.37°S / -67.73°W
Condition actuelle: normal / en sommeil (1 sur 5)
Eruptions du volcan Lascar:
2006-07, 2005, 2002, 2000, 1994-95, 1994, 1993-94, 1993, 1991-92, 1990, 1990, 1987-89, 1986, 1984, 1974, 1972, 1969, 1959-68, 1954, 1951-52, 1940, 1933, 1902, 1898, 1883-85, 1875, 1858, 1854, 1853(?), 1848
Style éruptif tipique:explosive
Lascar volcano news:
jeu., 29 déc. 2016, 13:15
dim., 25 sept. 2016, 15:15
jeu., 22 sept. 2016, 12:15
sam., 31 oct. 2015, 10:10
Ash plume from Lascar yesterday An moderately strong ash eruption occurred at the volcano yesterday morning at 09:32 local time. An ash plume rose approx. 2.5 km from the summit crater. Read more...It is unclear whether the eruption was caused by fresh magma or, more likely, by an explosion of overheated water (phreatic activity). There had not been any particular indication of new activity. According to SERNAGEOMIN's routine reports, seismic activity under the volcano, dominated by earthquakes related to internal fluid movements, had been progressively decreasing during the past months, from a total of 207 in May to 62 events in September. [ moins] lire toutes
dim., 14 avril 2013, 08:58
The incandescence observed at the crater due to hot gas emissions has decreased during 12-13 April and was no longer visible during last night.
jeu., 11 avril 2013, 12:51
Les volcanologues chiliens ont pu effectuer, avant-hier, un survol du Lascar. Les observations ont démontré l'absence de lave récente au fond du cratère sommital et la seule source de l’incandescence visible sur les images nocturnes de la webcam nord est la présence de gaz à très haute température. Read more...Les mesures faites depuis l'avion donnent une température maximale de 600°C et les spécialistes estiment que la présence de magma à faible profondeur est responsable de ce dégazage. Le niveau d'alerte reste au jaune. (Activolcans / SERNAGEOMIN) [ moins] lire toutes
jeu., 4 avril 2013, 08:36
A new eruption occurred yesterday at the volcano. SERNAGEOMIN reported that at 09:20 (local time) on 3 March degassing became more intense at the volcano. The plumes were sometimes grey colored, suggesting slight ash content. Incandescence was visible at night. Despite this activity, seismicity remains normal. The (official) Alert Level remains at GREEN.
mar., 6 mars 2012, 23:57
Le SERNAGEOMIN a repassé le niveau d'alerte du volcan Lascar au vert, malgré que que le volcan produise un panache de vapeur (qui a pu atteindre 1200 m de hauteur le 29 février).
jeu., 23 févr. 2012, 19:39
Une augmentation significative de l'activité sismique a été enregistrée au volcan Lascar du Chili durant la première moitié de février, selon le rapport du SERNAGEOMIN qui indique : Read more...Entre 1-15 février, un total de 350 événements sismiques ou 21 par jour en moyenne ont été enregistrés, y compris 233 signaux de longue période interprétés pour être causée par des mouvements fluides, 8 séismes de longue période ainsi appelés tornillo, dont un a duré 148 secondes et 3 impulsions de tremblement volcanique (éventuellement indiquant les mouvements du magma). L'activité visible consiste en des pulsations des colonnes de gaz des fumerolles atteignant 50-250 m de hauteur. [ moins] lire toutes
ven., 6 janv. 2012, 00:01
Volcan Lascar du Nord du Chili a été placé sur une statut alerte jaune, après que SERNAGEOMIN a détecté un essaim de plus de 300 petits tremblements de terre entre le 4 et 5 janvier.
mer., 21 mars 2007, 20:18
The Buenos Aires VAAC reported that on 11 March an ash cloud from Lascar rose to 5.5-6.7 km (18,000-22,000 ft) a.s.l. and drifted E. Read more...--- Source: GVP/USGS Weekly Volcanic Activity Report 7-13 March 2007
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mer., 6 sept. 2006, 17:16
Jorge Clavero, José A. Naranjo (Chilean Geological Survey) and Juan Cayupi (Chilean Emergency Office) sent the following report summarizing Lascar's activity over the past months: Read more... <<Lascar in the Central Andes of Northern Chile started a new eruptive cycle on April 18th 2006, after almost one year of apparent repose (last eruption recorded in May 4th 2005). <br>After one week with several phreatic explosive cycles per day (some lasting up to two hours), reaching up to 3,500 m above the crater, the activity decreased. The ash collected in June around the crater area showed no signs of new magma, in agreement with seismic data (three seismometers were installed for one week, and one for nearly one month to record the seismic activity associated to the explosions). The volcano has continued its activity with several smaller explosions during May, July and August, although much more separated in time (up to several weeks). The last observed explosions occurred on June 12th at 16:00 hrs and August 14th at 18:00 hrs (local time, GMT-4)). The latter lasted for 5 minutes and the plume reached up to 450 m above the crater, and was rapidly dispersed towards the East-Southeast. This unusual long-lasting cycle of phreatic vulcanian explosions of Láscar volcano seems to continue, and efforts from the Chilean Geological Survey (Sernageomin) and the Chilean Emergency Office (Onemi) are under way to install permanent seismometers in the area. Although no signs of new magma have been recognised so far, ascent of new magma in the future cannot be ruled out.>>
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mer., 26 avril 2006, 13:27
Jorge Clavero Ribes from the Chilean Geological Survey (Sernageomin) and Juan Cayupi-Chilean Emergency Office (ONEMI) sent the following report about the recent eruptions at Lascar volcano: Read more..."Lascar volcano ... started an eruptive cycle on April 18th 2006 at 11:35 hrs (all are local times). Four explosions were recorded on the 18th, one rose up to 3,000 m above the active crater. Two explosive cycles were observed on the 19th starting at 11:20 hrs and 13:21 hrs, the second being the largest rising up to 800 m above the crater. The plume, which essentially consisted in gases with little ash, was dispersed towards the north. Fine ash fell on the northern upper flank of the volcano within a radius of 3 km. Two new explosive cycles were observed on April 20th starting at 11:05 and 13:39hrs. The latter has been the longer observed so far, lasting 1 hour and 53 minutes. The plume consisted mainly of gases and little ash, rising up to 2500 m above the crater and dispersed towards the N at the beginning and at the end of the cycle towards the NE. Fine ash was deposited on the upper northern and eastern flanks. Finally two new, but smaller, explosive cycles were observed today starting at 08:48 hrs and 11:42 hrs, lasting less than 15 minutes each, with an eruptive column rising up to 3000 m above the crater, similar to those of the previous day, but dispersed towards the westand SW, respectively. These phreatic explosions show an unusual behavior of the volcano, and there is no evidence so far of new magma reaching the surface. Preliminary seismic data obtained by the Chilean Emergency Office (ONEMI) show only seismic events related to shallow degassing, without any seismic event associated todeeper fractures or magma movements." [ moins] lire toutes
mer., 19 avril 2006, 08:27
Lascar's eruption on 18 April 2006 (Photo REUTERS). Lascar volcano IN TheCentral Andes (Northern Chile) started erupting on Tuesday morning (18 April, 2006). A column of steam and ash rose to about 3,000 m (1,864 miles) above the summit crater.
jeu., 12 mai 2005, 18:09
Lascar volcano erupted last week, as the Buenos Aires VAAC reported: seen on satellite imagery early on 4 May, Lascar volcano in Chile sent an ash plume into the 4.5-10.6 km a.s.l. range (15,000-35,000 feet), where it was moving to the SE. Read more...--- Background. Lascar is the most active volcano of the northern Chilean Andes. The andesitic -to- dacitic stratovolcano contains six overlapping summitcraters and lies 5 km W of an older, higher stratovolcano, Volcán Aguas Calientes. Lascar consists of two major edifices; activity began at the eastern volcano and then shifted to the western cone. The largest eruption of Lascar took place about 26,500 years ago, and following the eruption of theTumbres scoria flow about 9,000 years ago, activity shifted back to the eastern edifice, where three overlapping craters were formed. Frequent small-to-moderate explosive eruptions have been recorded from Lascar in historical time since the mid-19th century, along with periodic larger eruptions that produced ashfall hundreds of kilometers away from the volcano. The largest historical eruption of Lascar took place in 1993 and produced pyroclastic flows that extended up to 8.5 km NW of the summit. Source: GVP/USGS Weekly Volcanic Activity Report, 4-10 May 2005
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