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Volcano Monitor

Volcanoes Today, 23 Jul 2014: Reventador, Ubinas, Aso, San Miguel, Semisopochnoi, Shishaldin, Zhupanovsky

Wednesday Jul 23, 2014 15:00 PM |
Glow at Aso's Nakadake crater this morning
Glow at Aso's Nakadake crater this morning
MODIS hot spots at Shishaldin (MODVOLC, Univ. Hawaii)
MODIS hot spots at Shishaldin (MODVOLC, Univ. Hawaii)
Current seismic activity (CEAP station / AVO)
Current seismic activity (CEAP station / AVO)
Tremor amplitude at Chaparrastique volcano over the past weeks (MARN)
Tremor amplitude at Chaparrastique volcano over the past weeks (MARN)
Small ash emission at Reventador yesterday
Small ash emission at Reventador yesterday
Gas plume from Ubinas with possibly some ash this morning
Gas plume from Ubinas with possibly some ash this morning
Zhupanovsky (Kamchatka, Russia): Several small ash emissions occurred at the volcano during 16-21 July. The resulting plumes dissipated quickly. Aviation color code is at orange.

Aso (Kyushu): Activity remains elevated at Asosan volcano. Although no new ash emissions were reported recently, the Nakadake crater shows intense degassing and bright glow from hot fumaroles is visible at night. It seems that the crater lake which usually occupied the bottom of the crater has evaporated.

Shishaldin (United States, Aleutian Islands): According to the Alaska Volcano Observatory, weak activity continues. MODIS data show elevated surface temperatures in the summit crater, but there are no visual or other indicators of eruptive activity available.

Semisopochnoi (United States, Aleutian Islands): Earthquakes have decreased but are still above background levels. No eruptive activity has been recorded. Alert level remains yellow.

San Miguel (El Salvador): The volcano continues to produce important gas emissions as well as occasional small ash explosions. Tremor remains at very high levels (20 times above normal), caused by internal fluid movements. The likelihood of new eruptive activity in the near to medium future remains elevated.

Reventador (Ecuador): Intermittent small explosions continue as well as slow lava extrusion at the summit, evidenced by thermal hot spots visible on satellite data.

Ubinas (Peru): The volcano has been relatively calm over the past days, producing mostly a very weak gas plume with dilute ash, as well as sporadic small explosions.
Previous news
Perhaps the most interesting feature in the new crater at Puʻu ʻŌʻō is the pit formed on the southern side of the crater floor. There, a small lava pond roughly 10 m (~30 ft) across has been sporadically overflowing and sending lava toward the deeper central part of the crater. View is to the south.
Monday, Jul 21, 2014
Kilauea (Hawai'i): Kīlauea continued to erupt at its summit and within the East Rift Zone, and gas emissions in both areas remained elevated. There was no significant change in tilt recorded at the summit, and the lava lake level was relatively steady over the past week leveling at ~30m (98ft). ... [more]
Lava flow on Stromboli 17 July evening
Sunday, Jul 20, 2014
Stromboli (Eolian Islands, Italy): (20 Jul) Overall, activity remains similar. Several smaller and larger, but all short-lived lava overflows occurred from the second NE vent over the past days. ... [more]
Location and time vs depth of recent earthquakes under Katla volcano
Wednesday, Jul 16, 2014
Katla (Southern Iceland): An increased number of small earthquakes, up to magnitude 2.7, has been occurring near the surface or at very shallow depths under Katla's ice cap since yesterday. ... [more]
This morning's lava flow on Stromboli
Tuesday, Jul 15, 2014
Stromboli (Eolian Islands, Italy): Another lava overflow from the NE vent occurred this morning, starting around 10:00 local time. It followed a phase of increased activity from the summit vents. ... [more]
Strombolian eruption from Stromboli's NE vent yesterday
Monday, Jul 14, 2014
Stromboli (Eolian Islands, Italy): Since 11 July, the volcano has been calmer compared to the previous weeks. No new lava overflows on the Sciara del Fuoco have occurred since 10 July, but who knows if a next surge of magma is already underway soon? ... [more]

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