Publication Date:
2024-05-10
Description:
Unrest began in July 2021 at Askja volcano in the Northern Volcanic Zone (NVZ) of Iceland. Its
most recent eruption, in 1961, was predominantly effusive and produced ∼0.1 km3 lava field. The last plinian
eruption at Askja occurred in 1875. Geodetic measurements between 1983 and 2021 detail subsidence of Askja,
decaying in an exponential manner. At the end of July 2021, inflation was detected at Askja volcano, from
GNSS observations and Sentinel‐1 interferograms. The inflationary episode can be divided into two periods
from the onset of inflation until September 2023. An initial period until 20 September 2021 when geodetic
models suggest transfer of magma (or magmatic fluids) from within the shallowest part of the magmatic system
(comprising an inflating and deflating source), potentially involving silicic magma. A following period when
one source of pressure increase at shallow depth can explain the observations.
Description:
Published
Description:
e2023GL106730
Description:
OSV2: Complessità dei processi vulcanici: approcci multidisciplinari e multiparametrici
Description:
JCR Journal
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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