The eruption in Fagradalsfjall (2021, Iceland): how the operational monitoring and the volcanic hazard assessment contributed to its safe access

S Barsotti, MM Parks, MA Pfeffer, BA Óladóttir, T Barnie… - Natural Hazards, 2023 - Springer
After more than a year of unrest, a small effusive eruption commenced in Fagradalsfjall,
Iceland, on 19 March 2021. The eruption lasted six months. The first six weeks were …

[HTML][HTML] Deformation and seismicity decline before the 2021 Fagradalsfjall eruption

F Sigmundsson, M Parks, A Hooper, H Geirsson… - Nature, 2022 - nature.com
Increased rates of deformation and seismicity are well-established precursors to volcanic
eruptions, and their interpretation forms the basis for eruption warnings worldwide. Rates of …

Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, Iceland

SA Halldórsson, EW Marshall, A Caracciolo… - Nature, 2022 - nature.com
Recent Icelandic rifting events have illuminated the roles of centralized crustal magma
reservoirs and lateral magma transport,,–, important characteristics of mid-ocean ridge …

Fracturing and tectonic stress drive ultrarapid magma flow into dikes

F Sigmundsson, M Parks, H Geirsson, A Hooper… - Science, 2024 - science.org
Many examples of exposed giant dike swarms can be found where lateral magma flow has
exceeded hundreds of kilometers. We show that massive magma flow into dikes can be …

Magma plumbing architectures and timescales of magmatic processes during historical magmatism on the Reykjanes Peninsula, Iceland

A Caracciolo, E Bali, SA Halldórsson… - Earth and Planetary …, 2023 - Elsevier
In the past 4000 years, three rifting episodes have occurred on the Reykjanes Peninsula
(RP, SW Iceland) at time intervals of about 800-1000 years, with the activation of four of the …

Near-surface magma flow instability drives cyclic lava fountaining at Fagradalsfjall, Iceland

S Scott, M Pfeffer, C Oppenheimer, E Bali… - Nature …, 2023 - nature.com
Lava fountains are a common manifestation of basaltic volcanism. While magma degassing
plays a clear key role in their generation, the controls on their duration and intermittency are …

Tremor clustering reveals pre-eruptive signals and evolution of the 2021 Geldingadalir eruption of the Fagradalsfjall Fires, Iceland

Z Zali, SM Mousavi, M Ohrnberger, EPS Eibl… - … Earth & Environment, 2024 - nature.com
Analyzing seismic data in a timely manner is essential for potential eruption forecasting and
early warning in volcanology. Here, we demonstrate that unsupervised machine learning …

[HTML][HTML] Satellite derived SO2 emissions from the relatively low-intensity, effusive 2021 eruption of Fagradalsfjall, Iceland

B Esse, M Burton, C Hayer, MA Pfeffer, S Barsotti… - Earth and Planetary …, 2023 - Elsevier
In March 2021 an effusive eruption began at the Fagradalsfjall volcanic system in Iceland,
ending nearly 800 years of dormancy on the Reykjanes peninsula. The eruption produced …

Evolving shallow conduit revealed by tremor and vent activity observations during episodic lava fountaining of the 2021 Geldingadalir eruption, Iceland

EPS Eibl, T Thordarson, Á Höskuldsson… - Bulletin of …, 2023 - Springer
Cyclic behaviour is observed in volcanic phenomena ranging from caldera collapses to
explosions, spattering or lava fountaining. The repeating processes can define irregular …

Deformation, seismicity, and monitoring response preceding and during the 2022 Fagradalsfjall eruption, Iceland

M Parks, F Sigmundsson, V Drouin… - Bulletin of …, 2023 - Springer
Following two periods of dike intrusion in 2021 at Fagradalsfjall, Iceland, one of which led to
an eruption, a third dike intrusion commenced on 30 July 2022. A sudden increase in …