When was the last time Shishaldin erupted?
| Mount Shishaldin | |
|---|---|
| Volcanic arc/belt | Aleutian Arc |
| Last eruption | January 3, 2020 |
| Climbing | |
| First ascent | May 16, 1932 by G. Peterson et al. (first recorded ascent) |
What type of eruption does Shishaldin have?
Shishaldin contains over two dozen pyroclastic cones on its NW flank, which is blanketed by massive aa lava flows. Frequent explosive activity, primarily consisting of strombolian ash eruptions from the small summit crater, but sometimes producing lava flows, has been recorded since the 18th century.
How many times has mount Shishaldin erupted?
Shishaldin has had significant eruptions a few times per decade. The most recent five eruptions occurred in 2014, 2004, 1999, 1997, and 1995. NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey.
How tall is Mount Shishaldin?
2 857 m
Mount Shishaldin/Elevation
When did The Shishaldin Volcano in Alaska erupt?
An eruption at Shishaldin that began in January 2014 was continuing as of March 2015 (BGVN 40:01). The Alaska Volcano Observatory reported increased activity on 28 January 2014 and a low-level lava eruption in the summit crater in mid-March.
When was the first ascent of Mount Shishaldin?
The Alaska Volcano Observatory monitors the volcano for more hazardous activity with seismometers and satellite images. Visual observations are rare, because of the remote location of the volcano. The first recorded ascent of Shishaldin was in 1932, by G. Peterson and two companions.
How often does Mount Shishaldin have an earthquake?
Since the 1999 eruption, it has maintained seismic activity, typically having very low-magnitude volcanic earthquakes (most are below magnitude 1) every 1–2 minutes. During this period of non-eruptive seismic activity, it has been puffing steam, with puffs also occurring about every 1–2 minutes.
Is there a steam plume from Shishaldin Volcano?
“While Shishaldin often produces a small steam plume and seismic unrest, there have not been any persistent strong thermal signals of this magnitude since 2015, when there was similar low-level eruptive activity,” said Hannah Dietterich, a volcanologist with the Alaska Volcano Observatory. “This type of activity is fairly typical for Shishaldin.