Volcanos

Roundup of Global Volcanic Activity

Stromboli (Eolian Islands, Italy): Two new lava (over-)flows occurred from the NE vent last evening and this morning. Similar as during the previous episodes, the flows were the result of surges in magma supply, quickly descended the upper part of the Sciara del Fuoco, and then stopped. It almost appears that these peaks of activity are following each other at intervals of 2-3 days.

Zhupanovsky (Kamchatka, Russia): Eruptions continue or have resumed at the volcano. Ash and SO2 plumes rising to approx. 6 km altitude and drifting east have been detected on satellite data this morning.

Sinabung (Sumatra, Indonesia): A small pyroclastic flow occurred on the slope of the volcano this morning. The flow was confined to the slope of the summit cone and did not reach the devastated areas at the SE base. Similarly as during other such events in the past weeks, it originated from a moderate collapse on the upper part of the still active viscous lava lobe.

Kilauea (Hawai'i): The June 27 breakout has remained active over the past week, emitting short lava flows from the vent on Puʻu ʻŌʻō's northeast flank. These flows have stacked upon one another creating a lava shield, which now hosts a lava pond.

Veniaminof (Alaska Peninsula, USA): Signs of volcanic activity have been absent for a while and the Due to the recent decrease in seismic activity and absence of detectable volcanic activity, the Alaska Volcano Observatory (AVO) lowered the alert level back to normal. Seismic activity, indicative of unrest, at Veniaminof has decreased to near background levels during the past week. Clear eruptive activity has not been observed since October of 2013. Thus AVO is lowering the Aviation Colour Code to Green and the Volcano Alert Level to Normal. Occasional steam plumes and weakly elevated surface temperatures may continue to be seen in satellite and webcam imagery as lava flows cool. It is possible that this is only a temporary pause of activity in the eruption that began in June 2013, and that the eruption could resume. Pauses in eruptive activity are not uncommon at this volcano. AVO will continue to monitor the volcano closely."(AVO)

Katla (Southern Iceland): (9 Jul) Earthquakes have been more frequent recently under the volcano recently. Most of them were small (below mag. 3) and shallow events. It is unknown whether these relate to magmatic movements inside the volcano, increased hydrothermal activity or are adjustments of the ice cap due to increased melting. The government has declared "Uncertainty level" for Katla volcano yesterday. The largest hazard comes in the form of melt-water floods and sulfurous volcanic gasses dissolved in and released from glacial rivers.