Shishaldin volcano news & activity updates:
Shishaldin volcano (Aleutian Islands, Alaska): alert level raised, likely new lava dome growing incrater
samedi mars 29, 2014 10:07 | AUTEUR : T
The Alaska Volcano Observatory raised the alert level for the volcano to Aviation Color Code ORANGE and Alert Level WATCH: "Elevated surface temperatures were detected in satellite data beginning on March 18 and have persisted to the present time.
Analysis of this data shows that temperatures are consistent with the eruption of lava within the summit crater. The current activity appears to be confined to the deep summit crater and there have been no observations of lava on the flanks of the volcano or surrounding the summit crater.
Web camera images, satellite data and pilot observations over the past week show only minor steam emissions from the mountain's summit crater. There has been no evidence of ash emission.
Sound waves coupling into the ground (ground-coupled air waves) indicative of small explosions in the crater began to be seen in seismic data on March 18 and continue to be detected intermittently." (AVO)
mercredi, févr. 26, 2014
AVO keeps the alert status at yellow, although no activity has been detected recently. ... lire toutes
dimanche, févr. 02, 2014
AVO still detected elevated surface temperatures at the crater on the summit, but a clear webcam image from 31 Jan showed no steaming from the summit area. The volcano remains at Aviation Color Code YELLOW. ... lire toutes
vendredi, janv. 31, 2014
The Alaska Volcano Observatory raised the Aviation Color Code of the volcano to YELLOW and the Alert Level to ADVISORY yesterday morning. Increased steaming was seen and satellite data showed a new thermal anomaly in the summit crater indicating a new hot surface, possibly from a new lava dome. The last activity at the volcano dates back to 2004. ... lire toutes
jeudi, janv. 01, 1970
It was reported that thermal anomalies over Shishaldin's summit were visible on in satellite images during 7-10 January. ... lire toutes