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Fernandina volcano (Galápagos Islands): fumarolic activity

Thu, 18 Nov 2021, 01:53
01:53 AM | BY: MARTIN
Spectrograms of the FER2 station on the SE flank, time (vertical) vs. frequency (horizontal) comparing 16 Nov and 17 Jun (image: (image: IGEPN)
Spectrograms of the FER2 station on the SE flank, time (vertical) vs. frequency (horizontal) comparing 16 Nov and 17 Jun (image: (image: IGEPN)
The local volcano observatory reported that a fumarolic activity has been detected in the volcano's crater area during the past few days as well as a small number of periods of volcanic tremor that may be likely related to fumarolic activity, another typical sign for the impending eruption.
The significant ground deformation was measured during the period between Feb 2020 and October 2021 as we reported in the latest report.
Degassing and volcanic tremor are part of the normal behavior at the volcano regardless of the current activity.
Source: Instituto Geofísico volcano activity update 18 November 2021

Previous news

Sun, 14 Nov 2021, 06:01

Fernandina volcano (Galápagos Islands): significant ground deformation and possible activity, first since Jan 2020

Ground deformation data during Feb 20-Oct 21, yellow-to-red color indicates inflation in the NE area while blue color shows deflation in the W-SW slopes (image: IGEPN)
During the period between Feb 2020 and October 2021, the local volcano observatory Instituto Geofísico recorded a significant ground deformation within the volcano's caldera. ... Read all
Wed, 10 Nov 2021, 06:00

Fernandina volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 10 November-16 November 2021 (Continuing Activity)

IG reported that slow deformation at Fernandina has been recorded over the previous 18 months. InSAR data showed that inflation was occurring at a rate of about 400 mm/year in the summit caldera and on the NE flank, while deflation was occurring at a rate of about 100-400 mm/year in areas on the upper W and SW flanks. On 13 October the areas of deflation changed to inflation and the rate of deformation in the caldera increased. ... Read all
Show more
Fernandina volcano
Shield volcano 1476 m / 4,842 ft
Galápagos Islands, Ecuador, -0.37°S / -91.55°W
Current status: restless (2 out of 5) Fernandina volcano eruptions:
2020, 2018, 2017, 2009
Typical eruption style
Effusive, basaltic fissure eruptions
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