Kategorie: Climate Change

Elevated surface temperatures in the inner Cerberus crater (image: Sentinel 2)

After almost 3 weeks, since the volcano observatory lowered Volcanic Alert Level to Yellow, the Alaska Volcano Observatory (AVO) reported that a low-level eruptive activity renewed at 09:45 local time yesterday.
Continuing low-level ash emissions reached 5,000 ft (1,500 m) altitude and were dispersed towards the south over Amchitka Island.
An elevated volcanic tremor (continuous shaking), that accompanied the event, continues at fluctuating intensity characterized by periods of high and low amplitudes.

A satellite image shows highly elevated surface temperatures in the Mount Cerberus crater.
Source: Alaska Volcano Observatory volcano activity update 31 May 2021

Map of today’s active volcanoes

Nyiragongo (DRCongo): (30 May) The situation around Goma remains tense. Earthquakes continue in the area, but fortunately seem to follow a decreasing trend overall.
Several scientists, notably from Italy’s INGV, are arriving in the area to help the underfunded Goma Volcano Observatory staff monitoring the volcano and asses the situation.
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In the meanwhile, several detailed maps of the recent lava flows and their impact have been published by various agencies, e.g.:

Volcano Activity Summary for 30 May 2021:

Vents and lava flows of the 22-23 May 2021 eruption of Nyiragongo (USGS)

Vents and lava flows of the 22-23 May 2021 eruption of Nyiragongo (USGS)

The situation around Goma remains tense. Earthquakes continue in the area, but fortunately seem to follow a decreasing trend overall.

Several scientists, notably from Italy’s INGV, are arriving in the area to help the underfunded Goma Volcano Observatory staff monitoring the volcano and asses the situation.
In the meanwhile, several detailed maps of the recent lava flows and their impact have been published by various agencies, e.g.:
Find

Map of the lava flows (EU)

Map of today’s active volcanoes

Etna (Sicily, Italy): Two short lava fountaining episodes occurred last evening. The first weak one from 18:00-18:15 local time, followed by a pause of activity until 21:47 when strombolian activity again set in at the New SE crater, leading to a another lava fountaining phase from around 22:00-22:40 local time.

Map of today’s active volcanoes

Etna (Sicily, Italy): The New SE crater produced two short-lived weak lava fountaining episodes today, one in the morning during around 9:30-10:30 am local time and one in the afternoon / early evening that started around 17:40 and is in progress at the time of this update.
In both cases, the activity and its evolution followed the same pattern as observed in the past days: after being more or less silent at the end of the previous episode, strombolian activity picks up along with rapidly increasing volcanic tremor signal (internal vibrations corresponding to rising magma). It rapidly increases, typically within an hour or two after beginning, reaching a short phase of sustained lava fountaining from the summit vent at the crater, known as the Saddle vent.
However, these recent episodes, if they can be called paroxysms, seem to only generate lava fountains of modest intensity when compared to paroxysms observed earlier in May and during Feb-March this year. This might explain the current frequency of several events occurred per day now, vs typically one paroxysm at intervals of at least 36-40 hours or longer (but much stronger).

Volcano Activity Summary for 28 May 2021:

Lava fountain episode at Etna’s New SE crater this afternoon