Volcanos

Roundup of Global Volcanic Activity

Kelud (East Java): Due to visual and instrumental monitoring results as well as level of potential hazards the Alert Level for Kelut was lowered to 1 (on a scale of 1-4) on 12 August. Residents and visitors were advised to not approach the crater rim, crater floor, or the rivers that disgorge from Kelut.

Dieng (Central Java): Alert level was lowered back to normal (1 out of 4). After the peak of the latest crisis in March 2013, activity (in particular gas emission levels) has calmed down to normal levels.

Soputan (North Sulawesi, Indonesia): Alert level was decreased to "Waspada" or 2 out of 4 recently as visual and seismic activity have decreased at the volcano recently.

Ijen (East Java, Indonesia): Due to decreased volcanic seismicity the Alert Level for Ijen was lowered to 1 (on a scale of 1-4) on 11 August.

Shishaldin (United States, Aleutian Islands): The Alaska Volcano Observatory (AVO) released a photo showing a small active lava lake inside the volcano's crater. Previously available satellite imagery was only able to identify a heat source, but not the type of its source, i.e. the activity at the volcano.

Sabancaya (Peru): An small explosion has probably occurred at the volcano on 9 August at 04:29, the Geophysical Institute of Peru informed. The event was not observed, but inferred from its seismic signal. The explosion signal is the first since the beginning of the crisis, which began in February 2013. Most likely, the explosion was a phreatic event, i.e. caused by overheated ground water without involvement of fresh magma.