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Forsíða

Forsíða

Magnús Tumi Guðmundsson - Professor

Magnús Tumi Guðmundsson

–

School of Engineering and Natural Sciences

Magnús Tumi Guðmundsson

Professor

- Geophysics

Location
Askja / N-332
Phone
525 - 5867
Email
mtg [at] hi.is

Unit
Faculty of Earth Sciences
Website
https://notendur.hi.is/~mtg/

ORCID site
https://orcid.org/0000-0001-5325-3368

Published works

2021

3D Gravity modeling of the volcanic island of Surtsey, Iceland
The resistivity structure of the Hekla volcano in South Iceland: first insights from electromagnetic investigations
Deciphering the fallout of tephra on glaciers in past eruptions, the case history of the Katla 1918 eruption

2020

Alteration progress within the Surtsey hydrothermal system, SW Iceland – A time-lapse petrographic study of cores drilled in 1979and 2017Journal of Volcanology and Geothermal Research
Operational response and hazards assessment during the 2014–2015 volcanic crisis at Bárðarbunga volcano and associated eruption at Holuhraun, IcelandJournal of Volcanology and Geothermal Research
Gravity modeling of the volcanic island of Surtsey, Iceland
The development of a subglacial lake monitored with radio echo sounding and comparison with water volumes released during jökulhlaups: Case study from the Eastern Skaftá Cauldron in the Vatnajökull ice cap, Iceland
A 25.6 m long firn core extracted from the Grímsvötn ice shelf in June 1993JOKULL
Rapid resurgence of the subglacial Bárdarbunga caldera following collapse in 2014-2015, quantified with repeated Bouguer gravity surveys
Unexpected large eruptions from buoyant magma bodies within viscoelastic crustNature Communications
Non-surface mass balance of glaciers in IcelandJournal of Glaciology

2019

Reykjanes, Iceland: Structure and dynamics of mid-oceanic ridge geo/hydrothermal systemsJournal of Volcanology and Geothermal Research
Design of the subsurface observatory at Surtsey volcano, IcelandScientific Drilling
SUSTAIN drilling at Surtsey volcano, Iceland, tracks hydrothermal and microbiological interactions in basalt 50 years after eruptionScientific Drilling
Changes in Geothermal Activity at Bárdarbunga, Iceland, Following the 2014–2015 Caldera Collapse, Investigated Using Geothermal System ModelingJournal of Geophysical Research: Solid Earth
Persistent albedo reduction on southern Icelandic glaciers due to ashfall from the 2010 Eyjafjallajökull eruptionRemote Sensing of Environment

2018

REFIR- A multi-parameter system for near real-time estimates of plume-height and mass eruption rate during explosive eruptionsJournal of Volcanology and Geothermal Research
A half-century of geologic and geothermic investigations in Iceland: The legacy of Kristján SæmundssonJournal of Volcanology and Geothermal Research
Crisis Coordination and Communication During the 2010 Eyjafjallajökull EruptionAdvances in Volcanology
Thermal power of Grímsvötn, Iceland, from 1998 to 2016: Quantifying the effects of volcanic activity and geothermal anomaliesJournal of Volcanology and Geothermal Research
Extreme durability in ancient Roman concretesAmerican Ceramic Society Bulletin
Underwater and drone based photogrammetry reveals structural control at Geysir geothermal field in IcelandJournal of Volcanology and Geothermal Research
Erratum to: Crisis Coordination and Communication During the 2010 Eyjafjallajökull Eruption (Advs in Volcanology, 10.1007/11157_2017_6)Advances in Volcanology

2017

Lava field evolution and emplacement dynamics of the 2014–2015 basaltic fissure eruption at Holuhraun, IcelandJournal of Volcanology and Geothermal Research
Subglacial volcanic activity above a lateral dyke path during the 2014–2015 Bárdarbunga-Holuhraun rifting episode, IcelandBulletin of Volcanology
Evolution of deformation and stress changes during the caldera collapse and dyking at Bárdarbunga, 2014–2015: Implication for triggering of seismicity at nearby Tungnafellsjökull volcanoEarth and Planetary Science Letters
High-resolution digital elevation modeling from TLS and UAV campaign reveals structural complexity at the 2014/2015 Holuhraun Eruption site, IcelandFrontiers in Earth Science

2016

Subglacial lava propagation, ice melting and heat transfer during emplacement of an intermediate lava flow in the 2010 Eyjafjallajökull eruptionBulletin of Volcanology
Experimental studies of heat transfer at the dynamic magma ice/water interface: Application to subglacially emplaced lavaJournal of Geophysical Research: Solid Earth
MeMoVolc report on classification and dynamics of volcanic explosive eruptionsBulletin of Volcanology
Fracture movements and graben subsidence during the 2014 Bárdarbunga dike intrusion in IcelandJournal of Volcanology and Geothermal Research
Conclusion: Recommendations and findings of the RED SEED working groupGeological Society Special Publication
Multidisciplinary constraints of hydrothermal explosions based on the 2013 Gengissig lake events, Kverkfjöll volcano, IcelandEarth and Planetary Science Letters
Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflowScience

2015

The hazard from lahars and jökulhlaupsEncyclopedia of Volcanoes 2nd edition
GlaciovolcanismEncyclopedia of Volcanoes 2nd Edition
Environmental pressure from the 2014-15 eruption of Baröarbunga volcano, IcelandGeochemical Perspectives Letters
Mass eruption rates in pulsating eruptions estimated from video analysis of the gas thrust-buoyancy transition - A case study of the 2010 eruption of Eyjafjallajökull, Iceland VolcanologyEarth, Planets and Space
Time-lapse characterization of hydrothermal seawater and microbial interactions with basaltic tephra at Surtsey VolcanoScientific Drilling
Fire in the hole: Recreating volcanic eruptions with cannon blastsEos
Reconstruction of the geometry of volcanic vents by trajectory tracking of fast ejecta - The case of the Eyjafjallajökull 2010 eruption (Iceland)Earth, Planets and Space

2014

Segmented lateral dyke growth in a rifting event at Bárðarbunga volcanic system, IcelandNature
Volcanic plume height correlated with magma-pressure change at Grímsvötn Volcano, IcelandNature Geoscience

2013

Futurevolc: A European volcanological supersite observatory in Iceland, a monitoring system and network for the futureInternational Geoscience and Remote Sensing Symposium (IGARSS)
Observing Iceland's Eyjafjallajökull 2010 eruptions with the autonomous NASA Volcano Sensor WebJournal of Geophysical Research: Solid Earth

2012

Monitoring of the plume from the basaltic phreatomagmatic 2004 Grímsvötn eruption-application of weather radar and comparison with plume modelsBulletin of Volcanology
Ash generation and distribution from the April-May 2010 eruption of Eyjafjallajökull, IcelandScientific Reports
Ash from the Eyjafjallajökull eruption (Iceland): Fragmentation processes and aerodynamic behaviorJournal of Geophysical Research: Solid Earth
A numerical model for meltwater channel evolution in glaciersCryosphere
Ice-volcano interactions during the 2010 Eyjafjallajkull eruption, as revealed by airborne imaging radarJournal of Geophysical Research: Solid Earth
Dynamics, stratigraphy and proximal dispersal of supraglacial tephra during the ice-confined 2004 eruption at Grímsvötn Volcano, IcelandBulletin of Volcanology
Validating subglacial volcanic eruption using ground-based C-band radar imageryIEEE Transactions on Geoscience and Remote Sensing
Automatic estimation of volcanic ash plume height using WorldView-2 imageryProceedings of SPIE - The International Society for Optical Engineering
Magma mobilization by downward-propagating decompression of the Eyjafjallajkull volcanic plumbing systemGeophysical Research Letters
Interactions between lava and snow/ice during the 2010 Fimmvö ruháls eruption, South-Central IcelandJournal of Geophysical Research: Solid Earth

2011

Response of Eyjafjallajökull, Torfajökull and Tindfjallajökull ice caps in Iceland to regional warming, deduced by remote sensingPolar Research
Near-source observations of aerosol size distributions in the eruptive plumes from Eyjafjallajökull volcano, March-April 2010Atmospheric Environment
Aggregation-dominated ash settling from the Eyjafjallajökull volcanic cloud illuminated by field and laboratory high-speed imagingGeology
Integrating multiple space and ground sensors to track volcanic activity34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring

2010

An unusual jökulhlaup resulting from subglacial volcanism, Sólheimajökull, IcelandQuaternary Science Reviews
Eruptions of eyjafjallajökull Volcano, IcelandEos
Experiments on the heat discharge at the dynamic magma-water-interfaceGeophysical Research Letters

2008

Monitoring active subglacial volcanoes: A case study using airborne remotely sensed imagery of Grímsvötn, IcelandInternational Journal of Remote Sensing
Six million years of glacial history recorded in volcanic lithofacies of the James Ross Island Volcanic Group, Antarctic PeninsulaPalaeogeography, Palaeoclimatology, Palaeoecology
Progressive cooling of the hyaloclastite ridge at Gjálp, Iceland, 1996-2005Journal of Volcanology and Geothermal Research
Seismic and geodetic insights into magma accumulation at Katla subglacial volcano, Iceland: 1999 to 2005Journal of Geophysical Research: Solid Earth

2007

Hotspot Iceland: An introductionJournal of Geodynamics
Structure of the Grímsvötn central volcano under the Vatnajökull icecap, IcelandGeophysical Journal International
Numerical studies of ice flow over subglacial geothermal heat sources at Grímsvötn, Iceland, using Full Stokes equationsJournal of Geophysical Research: Earth Surface
Large hazardous floods as translatory wavesEnvironmental Modelling and Software
Discriminating volcano deformation due to magma movements and variable surface loads: Application to Katla subglacial volcano, IcelandGeophysical Journal International
Volcanic systems and calderas in the Vatnajökull region, central Iceland: Constraints on crustal structure from gravity dataJournal of Geodynamics
Comparison and validation of Airborne Thematic Mapper thermal imagery using ground-based temperature data for Grímsvötn caldera, Vatnajökull, IcelandGeological Society Special Publication
Geothermal activity in the subglacial Katla caldera, Iceland, 1999-2005, studied with radar altimetryAnnals of Glaciology

2006

The formation of Helgafell, southwest Iceland, a monogenetic subglacial hyaloclastite ridge: Sedimentology, hydrology and volcano-ice interactionJournal of Volcanology and Geothermal Research
Probabilistic model for eruptions and associated flood events in the Katla caldera, IcelandComputational Geosciences

2005

6. Subglacial volcanic activity in IcelandDevelopments in Quaternary Science
Ice-water interactions during floods from Grænalón glacier-dammed lake, IcelandAnnals of Glaciology
Palaeomagnetic, ⁴⁰Ar/³⁹Ar, and stratigraphical correlation of Miocene-Pliocene basalts in the Brandy Bay area, James Ross Island, AntarcticaAntarctic Science

2004

The 1996 eruption ay Gjálp, Vatnajökull ice cap, Iceland: Efficiency of heat transfer, ice deformation and subglacial water pressureBulletin of Volcanology

2003

Possible Juventae Chasma subice volcanic eruptions and Maja Valles ice outburst floods on Mars: Implications of Mars Global surveyor crater densities, geomorphology, and topographyJournal of Geophysical Research E: Planets
Melting of ice by magma-ice-water interactions during subglacial eruptions as an indicator of heat transfer in subaqueous eruptionsGeophysical Monograph Series

2002

Three-dimensional glacier surface motion maps at the Gjálp eruption site, Iceland, inferred from combining InSAR and other ice-displacement dataAnnals of Glaciology
Rheological properties of fish gelatinsJournal of Food Science
The hyaloclastite ridge formed in the subglacial 1996 eruption in Gjálp, Vatnajökull, Iceland: Present day shape and future preservationGeological Society Special Publication

2001

Study of volcano/ice interactions gains momentumEos
Glacier-volcano interactions deduced by SAR interferometryJournal of Glaciology

2000

Comment: Subglacial eruptions and synthetic aperture radar imagesEos

1997

Gravity and magnetic studies of the subglacial Grimsvötn volcano, Iceland: Implications for crustal and thermal structureJournal of Geophysical Research B: Solid Earth
Ice-volcano interaction of the 1996 Gjalp subglacial eruption, Vatnajokull, IcelandNature
Center of the Iceland hotspot experiences volcanic unrestEos

1995

Changes in jokulhlaup sizes in Grimsvotn, Vatnajokull, Iceland, 1934- 91, deduced from in-situ measurements of subglacial lake volumeJournal of Glaciology

1993

Variations in the thermal output of the subglacial Grímsvötn Caldera, IcelandGeophysical Research Letters

1991

Eruptions in Grimsvotn, Vatnajokull, Iceland, 1934-1991Jokull

Keywords for Specialisation:

Volcanology / glaciology