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Shishaldin reported activity

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EVENT SPECIFIC INFORMATION

Event Name : Shishaldin 2000/8

This is a questionable event.

Start:August 11, 2000 Observed

Central eruption: BibCard
Phreatic: BibCard
Eruption Type:Explosive

Description: From Smithsonian Institution (2000): "The Alaska Volcano Observatory (AVO) reported on 11 August that recent satellite data indicated a weak thermal anomaly at Shishaldin's summit, although no known seismic activity occurred above background levels in the area. Pilot reports did not disclose any noticeable change in steam emission from the summit crater. Accordingly, the AVO decided to keep the Level of Concern Color Code for Shishaldin at Green.

"After 11 August, clear days allowed unobstructed remote sensing, and satellite observations, which suggested no further thermal anomaly. On 18 August, AVO issued an update stating that new seismic data analysis showed several small explosions occurring coeval with the thermal anomaly reported on 11 August. These explosions were similar to those observed throughout 1999 and in early 2000 (Bulletin v. 24, nos. 2, 3, 4, and 8; v. 25, no. 2). The thermal anomaly and seismic disturbances did not recur in the remainder of August, however, so the hazard status remained Green."

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Page modified: March 30, 2017 14:36
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