Roundup of Global Volcanic Activity:
Etna (Sicily, Italy): Ash emissions were observed from the central crater (Voragine) and weak strombolian activity took place from the New SE crater over night.
Shiveluch (Kamchatka): An eruption generated an ash plume that rose to estimated 20,000 ft (about 6 km) this morning, VAAC Tokyo reported. The event was probably caused by another partial dome collapse and/ or explosion at the growing lava dome.
Sakurajima (Kyushu, Japan): (9 Mar) An unusually high ash plume rising to 15,000 ft (4.5 km) was reported this morning. This suggests a significantly larger than average vulcanian explosion took place.
Paluweh (off Flores Island, Indonesia): (9 Mar) An explosion or/and dome collapse at the still active lava dome produced an ash plume rising to about 8,000 ft (2.4 km) altitude this morning.
Cleveland (Aleutian Islands, Alaska): (9 Mar) AVO lowered the alert level from ORANGE to YELLOW: The summit lava dome extruded in late January 2013 has remained unchanged since the last color code change on February 6, 2013. Anomalous surface temperatures prevalent in late January through mid-February declined and the last thermal anomaly observed in satellite imagery was reported on February 26. Although satellite viewing conditions at Cleveland are typically cloudy, clear views between March 1 and 5 indicate no change has occurred in the summit dome and thermal anomalies no longer are present. Therefore, the Aviation Color Code and Volcano Alert Level for Cleveland is lowered to YELLOW/ADVISORY. (Source: AVO)
Popocatépetl (Central Mexico): (9 Mar) Activity (internal and external) has decreased again to levels similar to past weeks. Glow is visible at the summit, and degassing (SO2) remains elevated.
Laguna del Maule (Central Chile): (9 Mar) New signs of volcanic unrest – seismic swarms and ground inflation – have been detected at the volcano recently and SERNAGEOMIN raised the alert level of the volcano to yellow. A seismic crisis began around February and currently has contained nearly 130 quakes of volcanic-tectonic origin (rock fracturing at depth) as well as fluid movements and volcanic tremor.