The alert level of Shishaldin volcano has been reassessed to WATCH and Orange on 03/28/2014 by the AVO .
Elevated surface temperatures was detected from March 18 by satellites , and persists to this day , in relation to the presence of lava in the summit crater . Seismographs record small explosions intermittently since the same date. The activity remains confined in the deep crater without flows on the flanks .
Shishaldin - Landsat 8 showing the emission of heat from the lava in the summit crater , the 18.03 and the 27.03.2014 - doc . AVO / USGS / Schneider D
The Shishaldin is the highest volcano of the Aleutian volcanic arc, with his top at 2.857 meters. This symmetrical stratovolcano, located on Unimak Island , has a basal diameter of 16 km. and a small summit crater from which emerges a permanent small plume of steam. It is flanked to the northwest by 24 monogenic cones parasites.
The Shishaldin cone is relatively recent, less than 10,000 years , and is built on the remains of an ancient somma eroded by glaciers, and based on volcaniclastic rocks of late Tertiary .
Its last eruption was in 2004 ( GVP )
Aleuts call this volcano Sisquk , meaning " mountain pointing the way when I 'm lost ."