A5071981679- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Landslides and related hazards
- High-pressure geophysics and materials
- Geophysics and Gravity Measurements
- Winter Sports Injuries and Performance
- Geological Modeling and Analysis
- Geological formations and processes
- Earthquake Detection and Analysis
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Arctic and Antarctic ice dynamics
- Marine and environmental studies
- Planetary Science and Exploration
- Seismology and Earthquake Studies
- Radioactivity and Radon Measurements
- Geological and Geophysical Studies
- Geological Formations and Processes Exploration
- GNSS positioning and interference
- Geographic Information Systems Studies
- Meteorological Phenomena and Simulations
- Climate change and permafrost
- Seismic Imaging and Inversion Techniques
University of Iceland
2014-2024
Abstract After more than a year of unrest, small effusive eruption commenced in Fagradalsfjall, Iceland, on 19 March 2021. The lasted six months. first weeks were characterized by multiple fissure openings, and the remainder was dominated activity from single crater. During eruption, lava low-level gases propagated over complex terrain: hyaloclastite massif with mountain peaks up to about 350 m asl valleys between. area is uninhabited, but easily accessible at 30 km distance Reykjavík. While...
Abstract The basaltic effusive eruption at Mt. Fagradalsfjall lasted from 19 March to 18 September 2021, ending a 781‐year repose period on Reykjanes Peninsula, Iceland. By late 33 near real‐time photogrammetric surveys were completed using satellite and airborne images, usually processed within 3–6 hr. results provide unprecedented temporal data sets of lava volume, thickness, effusion rate. This enabled rapid assessment evolution hazards populated areas, important infrastructure, tourist...
Abstract Few divergent plate boundaries are subaerial. Active rifts in Iceland provide valuable surface information on spreading processes, rifting and faulting. The 200 km long 50 wide Northern Volcanic Rift Zone (NVZ) is composed of 7 volcanic systems, each consisting a central volcano with transecting fissure swarm. Fractures postglacial eruptive fissures the NVZ were analysed using aerial photographs satellite images to study their characteristics behaviour. While non-eruptive fractures...
Abstract Tectonic controls on dyke emplacements, eruption dynamics and locations have been observed in multiple volcanic areas worldwide. Mapping of active structures is therefore key for assessing potential tectonic hazards regions. We used wrapped interferograms from the TerraSAR-X satellite to map fracture movements over a 2-year period volcano-tectonic unrest at onshore Reykjanes Peninsula plate boundary SW Iceland. As 1 December 2023, has included least six inflation events five...
Abstract Unrest began in July 2021 at Askja volcano the Northern Volcanic Zone (NVZ) of Iceland. Its most recent eruption, 1961, was predominantly effusive and produced ∼0.1 km 3 lava field. The last plinian eruption occurred 1875. Geodetic measurements between 1983 detail subsidence Askja, decaying an exponential manner. At end 2021, inflation detected volcano, from GNSS observations Sentinel‐1 interferograms. inflationary episode can be divided into two periods onset until September 2023....
Following an increase in seismic activity December 2019, a pressure began the center of Svartsengi volcanic system January 2020, as inferred from geodetic observations. The first diking event occurred, however, nearby Fagradalsfjall system, about 10 km east Svartsengi, 24 February – 19 March 2021, when ~9 long dike gradually formed with geodetically initial volume rates up to 35 m3/s, during week diking. total was ~34 Mm3, based on joint inversions InSAR and GNSS observations that...
The Svartsengi volcanic system, SW-Iceland, started to show unrest in early 2020 with a series of inflation-deflation cycles. In late October 2023, it inflate at unprecedented rate ~8 mm/day until produced ~15 km long dike intrusion on the 10 November 2023. inflation resumed soon after and has been continuous since, only interrupted by deflation periods concurrent additional injections associated eruptions Sundhnúkur crater row. Geodetic modelling, assuming deformation source within...
Abstract Following two periods of dike intrusion in 2021 at Fagradalsfjall, Iceland, one which led to an eruption, a third commenced on 30 July 2022. A sudden increase seismicity occurred within the diking area, with approximately 1700 automatically detected earthquakes > M1 24 h. Strong were felt over several days wider area (largest M W 5.3). The timeline and spatial distribution suggested it resulted from diking, together triggered nearby areas releasing stored tectonic stress....
We report how data from satellite and aerial synthetic aperture radar (SAR) observations were integrated into monitoring of the 2014-2015 Holuhraun eruption in Bárðarbunga volcanic system, largest effusive Iceland since 1783-84 Laki eruption. A lava field formed one most remote areas Iceland, after propagation a ~50 km-long dyke beneath Vatnajökull ice cap, where caldera is located. Due to 6 month duration eruption, mainly wintertime, daily was particularly challenging. During European...
Abstract After more than a year of unrest, small effusive eruption commenced in Fagradalsfjall on 19 March 2021. The lasted six months with multiple fissure openings characterizing the first weeks. During lava and low-level gases propagated over complex terrain: hyaloclastite massif mountain peaks up to about 350 m asl valleys between. It is uninhabited, but easily accessible at 30 km distance from Reykjavík capital area. While was on-going, 356,000 accesses were counted. Monitoring onset,...