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Forsíða

Þorvaldur Þórðarson - Professor

Þorvaldur Þórðarson

–

School of Engineering and Natural Sciences

Þorvaldur Þórðarson

Professor

Professor in Volcanology and Petrology

Location
Askja / N-224
Phone
525 - 4428
Email
torvth [at] hi.is

Unit
Faculty of Earth Sciences
Published Work
Þorvaldur Þórðarson - published work

Curriculum Vitae
Þorvaldur Þórðarson - Curriculum Vitae
ORCID site
https://orcid.org/0000-0003-4011-7185
Research portal – Þorvaldur Þórðarson

Professional Experience

2012 - , Professor, Faculty of Earth Sciences, University of Iceland
2015 - 2015, Visiting Professor, School of Physical Sciences, University of Tasmania
2006 - 2013, Reader, School of Earth Sciences, University of Edinburgh
2003 - 2006, Researcher, Institute of Earth Sciences, University of Iceland
2001 - 2006, Researcher, Department of Geology and Geophysics, University of Hawaii, Manoa
2004 - 2004, Visiting professor, Blaise Pascal University, Fance
1996 - 2003, Researcher, Exploration and Mining, CSIRO, Australia
1994 - 1996, Researcher, Wairakei Research Centre, IGNS, New Zealand
1990 - 1994, NASA Global Change Fellow, Department of Geology and Geophysics, University of Hawaii at Manoa
1988 - 1990, Research Fellow, NVI, Iceland
1986 - 1987, Field Instructor, NVI, Reykjavík
1974 - 1986, Independent Contractor in Construction, Multiple (e.g. the Terminal at Keflavík airport)
1979 - 1980, Teacher, Borganes elementary school
1978 - 1979, Teacher, Selfoss elementary school

Published works

2025

Real-time, in situ viscosity mapping of active lavaGeology
Revisiting the 10th-Century Eldgjá EruptionGeophysical Research Letters

2024

A Holocene history of climate, fire, landscape evolution, and human activity in northeastern IcelandClimate of the Past
The Moinui Flow on Mauna LoaVolcanica
A lower bound on the rheological evolution of magma in the 2021 Fagradalsfjall FiresJournal of Volcanology and Geothermal Research
Sulfide saturation and resorption modulates sulfur and metal availability during the 2014–15 Holuhraun eruption, IcelandCommunications Earth and Environment
Disparate impacts of the Eldgjá and Laki flood-lava eruptionsHolocene
Formation of silicic crust on early Earth and young planetary bodies in an Iceland-like settingCommunications Earth and Environment

2023

The 2023 Litli-Hrútur eruption of the Fagradalsfjall Fires, SW-IcelandCzech Polar Reports
Deep magma mobilization years before the 2021 CE Fagradalsfjall eruption, IcelandGeology
U–Pb zircon age and chronology of the Torfufell central volcanoBulletin of Volcanology
Depth of Magma Storage Under Iceland Controlled by Magma FluxesGeochemistry, Geophysics, Geosystems
Water in clinopyroxene from the 2021 Geldingadalir eruption of the Fagradalsfjall Fires, SW-IcelandBulletin of Volcanology

2022

Trace element composition in olivine from the 2022 Meradalir eruption of the Fagradalsfjall Fires, SW-IcelandCzech Polar Reports
Quantifying the Water-to-Melt Mass Ratio and Its Impact on Eruption Plumes During Explosive Hydromagmatic EruptionsGeochemistry, Geophysics, Geosystems
Crowd-sourcing observations of volcanic eruptions during the 2021 Fagradalsfjall and Cumbre Vieja eventsNature Communications
Community established best practice recommendations for tephra studies—from collection through analysisScientific data
Iceland
Linking lava morphologies to effusion rates for the 2014–2015 Holuhraun lava flow field, IcelandGeology
VolcanotectonicsBulletin of Volcanology
Characteristics of Sub-Aerially Emplaced Pyroclasts in the Surtsey Eruption Deposits: Implications for Diverse Surtseyan Eruptive StylesGeosciences
Diverse mantle components with invariant oxygen isotopes in the 2021 Fagradalsfjall eruption, IcelandNature Communications
Multiple Early Holocene eruptions of Katla produced tephra layers with similar composition to the Vedde AshGeochronology

2021

The explosive, basaltic Katla eruption in 1918, south Iceland II. Isopach map, ice cap deposition of tephra and layer volumeJokull
Geomorphological characterization of the 2014–2015 Holuhraun lava flow-field in IcelandJournal of Volcanology and Geothermal Research
Recurrent outburst floods and explosive volcanism during the Younger Dryas–Early Holocene deglaciation in south IcelandJournal of Quaternary Science

2020

Lava–water interaction and hydrothermal activity within the 2014–2015 Holuhraun Lava Flow Field, IcelandJournal of Volcanology and Geothermal Research
Temporal and spatial evolution of the Neogene age Breiðdalur central volcano through ³⁹Ar/⁴⁰Ar and U-Pb age determinationJournal of Volcanology and Geothermal Research
A catalogue of major and trace element data for Icelandic Holocene silicic tephra layersJournal of Quaternary Science
Diffusion timescales of magmatic processes in the Moinui lava eruption at Mauna Loa, Hawaii, as inferred from bimodal olivine populationsJournal of Petrology
Lava Flow Roughness on the 2014–2015 Lava Flow-Field at Holuhraun, Iceland, Derived from Airborne LiDAR and PhotogrammetryGeosciences
The Saksunarvatn Ash and the G10ka series tephra. Review and current state of knowledgeQuaternary Geochronology

2019

The onset of neoglaciation in Iceland and the 4.2 ka eventClimate of the Past
Driving mechanisms of subaerial and subglacial explosive episodes during the 10th century Eldgjá fissure eruption, southern IcelandVolcanica
Mid-crustal storage and crystallization of Eyjafjallajökull ankaramites, South IcelandJokull
Marker tephra in Haukadalsvatn lake sedimentQuaternary Science Reviews
The 2014-2015 lava flow field at Holuhraun, IcelandRemote Sensing
Remote sensing of surface Hydrothermal Alteration, identification of Minerals and Thermal anomalies at Sveifluháls-Krýsuvík high-temperature Geothermal field, SW IcelandIOP Conference Series: Earth and Environmental Science
Remote sensing of surface Hydrothermal Alteration, identification of Minerals and Thermal anomalies at Sveifluháls-Krýsuvík high-temperature Geothermal field, SW IcelandIOP Conference Series: Earth and Environmental Science
Thermal model of lava in Mt. Agung during December 2017 episodes derived from Integrated SENTINEL 2A and ASTER remote sensing datasetsIOP Conference Series: Earth and Environmental Science
Signature of deep mantle melting in South Iceland olivineContributions to Mineralogy and Petrology
Landscape evolution associated with the 2014–2015 Holuhraun eruption in IcelandJournal of Volcanology and Geothermal Research
Formation of segregation structures in Hafnarhraun pāhoehoe lobe, SW Iceland: a window into crystal–melt separation in basaltic magmaBulletin of Volcanology

2018

Assessing Impact to Infrastructures Due to Tephra Fallout From Öræfajökull Volcano (Iceland) by Using a Scenario-Based Approach and a Numerical ModelFrontiers in Earth Science
New Insights for Detecting and Deriving Thermal Properties of Lava Flow Using Infrared Satellite during 2014–2015 Effusive Eruption at Holuhraun, IcelandRemote Sensing
Provenance, stratigraphy and chronology of Holocene tephra from Vestfirðir, IcelandQuaternary Geochronology
The Volume of Lava Erupted During the 2014 to 2015 Eruption at Holuhraun, IcelandJournal of Geophysical Research: Solid Earth
Climatic control on Icelandic volcanic activity during the mid-HoloceneGeology
Total grain-size distribution of four subplinian–Plinian tephras from Hekla volcano, IcelandJournal of Volcanology and Geothermal Research
Petrology and geochemistry of the 2014–2015 Holuhraun eruption, central IcelandContributions to Mineralogy and Petrology
Nomination of Vatnajökull National Park
The 1845 Hekla eruptionJournal of Volcanology and Geothermal Research
Paleomagnetism of Holocene lava flows from the Reykjanes Peninsula and the Tungnaá lava sequence (Iceland)Bulletin of Volcanology
Interaction between central volcanoes and regional tectonics along divergent plate boundariesBulletin of Volcanology
Variance of the Flexure Model Predictions With Rejuvenated Volcanism at Kīlauea Point, Kaua‘i, Hawai‘iFrontiers in Earth Science
Magmatic crystal records in time, space, and process, causatively linked with volcanic unrestEarth and Planetary Science Letters

2017

The opening subplinian phase of the Hekla 1991 eruptionBulletin of Volcanology
Strong constraints on aerosol-cloud interactions from volcanic eruptionsNature
Translations of volcanological termsBulletin of Volcanology
Pāhoehoe, ‘a‘ā, and block lavaBulletin of Volcanology
Rootless tephra stratigraphy and emplacement processesBulletin of Volcanology
Lava field evolution and emplacement dynamics of the 2014–2015 basaltic fissure eruption at Holuhraun, IcelandJournal of Volcanology and Geothermal Research
Message in a stainless steel bottle thrown into deep geological timeGondwana Research
Volatile and light lithophile elements in high-anorthite plagioclase-hosted melt inclusions from IcelandGeochimica et Cosmochimica Acta
Atmospheric processes affecting the separation of volcanic ash and SO2 in volcanic eruptions: inferences from the May 2011 Grímsvötn eruptionAtmospheric Chemistry and Physics
Gosið í Holuhrauni 2014–2015. Magn gosefna, dreifing mengunar og mikilvægi tímasetningar og staðsetningar eldgosa með tilliti til umhverfisáhrifa
Multiple coincident eruptive seismic tremor sources during the 2014–2015 eruption at Holuhraun, IcelandJournal of Geophysical Research: Solid Earth
Cosmos volcanic succession and its komatiite-hosted nickel sulphide deposit.
Assessment of the potential respiratory hazard of volcanic ash from future Icelandic eruptions: a study of archived basaltic to rhyolitic ash samplesEnvironmental Health
The rheological evolution of the 2014/2015 eruption at Holuhraun, central IcelandBulletin of Volcanology
Fragmentation mechanisms associated with explosive lava–water interactions in a lacustrine environmentBulletin of Volcanology

2016

Lava field evolution and emplacement dynamics of the 2014-2015 basaltic fissure eruption at Holuhraun, IcelandJournal of Volcanology and Geothermal Research
Shallow conduit processes during the ad 1158 explosive eruption of Hekla volcano, IcelandBulletin of Volcanology
Selective environmental stress from sulphur emitted by continental flood basalt eruptionsNature Geoscience
Dispersal of key subplinian–Plinian tephras from Hekla volcano, IcelandBulletin of Volcanology
ConclusionGeological Society Special Publication
Degassing and magma mixing during the eruption of Surtsey Volcano (Iceland, 1963–1967)Bulletin of Volcanology
Postglacial eruptive history of the Askja region, North IcelandBulletin of Volcanology
Subglacial lava propagation, ice melting and heat transfer during emplacement of an intermediate lava flow in the 2010 Eyjafjallajökull eruptionBulletin of Volcanology
Tracking timescales of short-term precursors to large basaltic fissure eruptions through Fe-Mg diffusion in olivineEarth and Planetary Science Letters
The architecture and shallow conduits of Laki-type pyroclastic conesBulletin of Volcanology

2015

MeMoVolc consensual documentBulletin of Volcanology
Disruption of tephra fall deposits caused by lava flows during basaltic eruptionsBulletin of Volcanology
Real-time monitoring of volcanic eruptions in Iceland 2004-2014Jokull
The evolution and storage of primitive melts in the Eastern Volcanic Zone of IcelandContributions to Mineralogy and Petrology
Diffusive over-hydration of olivine-hosted melt inclusionsEarth and Planetary Science Letters
Big grains go farAtmospheric Measurement Techniques
The RESET projectQuaternary Science Reviews
Rootless cone eruption processes informed by dissected tephra deposits and conduitsBulletin of Volcanology
Environmental pressure from the 2014–15 eruption of Bárðarbunga volcano, IcelandGeochemical Perspectives Letters
Satellite detection, long-range transport, and air quality impacts of volcanic sulfur dioxide from the 2014-2015 flood lava eruption at Bárðarbunga (Iceland)Journal of Geophysical Research: Atmospheres
Investigating the use of Scanning X-Ray Fluorescence to locate Cryptotephra in Minerogenic lacustrine sediment: Experimental results

2014

Holocene tephra from Iceland and Alaska in SE Greenland shelf sedimentsGeological Society Special Publication
Iceland, Classic Geology in Europe series
Volcanic plume height correlated with magma-pressure change at Grímsvötn Volcano, IcelandNature Geoscience
Crystal storage and transfer in basaltic systemsJournal of Petrology
Reply to comment by Cole-Dai et al. On “Climatic impact of the long-lasting laki eruptionJournal of Geophysical Research
Melt mixing causes negative correlation of trace element enrichment and CO₂ content prior to an Icelandic eruptionEarth and Planetary Science Letters
Technical note monitoring the magmas fuellingvolcanic eruptions in near-real-time using x-ray micro-computed tomographyJournal of Petrology
Reconstructing the deep CO₂ degassing behaviour of large basaltic fissure eruptionsEarth and Planetary Science Letters
Dike emplacement at Bardarbunga, Iceland, induces unusual stress changes, caldera deformation, and earthquakesBulletin of Volcanology
The cosmos greenstone succession, agnew-wiluna greenstone belt, Yilgarn Craton, Western AustraliaLithos
Pyroclastic edifices record vigorous lava fountains during the emplacement of a flood basalt flow field, Roza Member, Columbia River Basalt Province, USABulletin of the Geological Society of America
Fjarkönnun á eldgosum á Íslandi, árin 2004–2014, með rauntíma nýtingu á gervitunglamyndumJokull
Assessing hazards to aviation from sulfur dioxide emitted by explosive icelandic eruptionsJournal of Geophysical Research

2013

Mestu eldgos jarðar
Corrigendum to "Three-dimensional lithofacies variations in hyaloclastite deposits" [J. Volcanol. Geotherm. Res. 250 (2013) 19-33]Journal of Volcanology and Geothermal Research
Crystal-melt relationships and the record of deep mixing and crystallization in the ad 1783 laki eruption, IcelandJournal of Petrology
ELDUR Í EYJAFJALLAJÖKLI 2010
U-Pb dating constraints on the felsic and intermediate volcanic sequence of the nickel-sulphide bearing Cosmos succession, Agnew-Wiluna greenstone belt, Yilgarn Craton, Western AustraliaPrecambrian Research
ErratumJournal of Petrology
ELDGOS
Oxygen isotopes in melt inclusions and glasses from the Askja volcanic system, North IcelandGeochimica et Cosmochimica Acta
The 1874-1876 volcano-tectonic episode at Askja, North IcelandGeochemistry, Geophysics, Geosystems
Observing Iceland's Eyjafjallajökull 2010 eruptions with the autonomous NASA Volcano Sensor WebJournal of Geophysical Research: Solid Earth
GRÍMSVÖTN
UNDIR VATNAJÖKLI
Three-dimensional lithofacies variations in hyaloclastite depositsJournal of Volcanology and Geothermal Research
BÁRÐARBUNGA
Seismicity observed under the Snæfellsjökull volcanoJokull
Physicochemical and toxicological profiling of ash from the 2010 and 2011 eruptions of Eyjafjallajökull and Grímsvötn volcanoes, Iceland using a rapid respiratory hazard assessment protocolEnvironmental Research
UK monitoring and deposition of tephra from the May 2011 eruption of Grímsvötn, IcelandJournal of Applied Volcanology
Hraun

2012

Distal deposition of tephra from the Eyjafjallajökull 2010 summit eruptionJournal 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
Evaluation of the effects of composition on instrumental mass fractionation during SIMS oxygen isotope analyses of glassesChemical Geology
Interactions between lava and snow/ice during the 2010 Fimmvörðuháls eruption, South-Central IcelandJournal of Geophysical Research: Solid Earth
Mush disaggregation in basaltic magma chambersJournal of Petrology
Abrupt onset of the Little Ice Age triggered by volcanism and sustained by sea-ice/ocean feedbacksGeophysical Research Letters
Ash from the Eyjafjallajökull eruption (Iceland)Journal of Geophysical Research: Solid Earth
Volcanism and the atmosphereEos
Ash generation and distribution from the April-May 2010 eruption of Eyjafjallajökull, IcelandScientific Reports
Melt inclusion constraints on the magma source of Eyjafjallajökull 2010 flank eruptionJournal of Geophysical Research: Solid Earth
Petrogenesis of the Sólheimar ignimbrite (Katla, Iceland)Geochimica et Cosmochimica Acta
Formation of Öskjuvatn caldera at Askja, North IcelandJournal of Volcanology and Geothermal Research
Climatic impact of the long-lasting 1783 Laki eruptionJournal of Geophysical Research Atmospheres

2011

Excess mortality in Europe following a future Laki-style icelandic eruptionProceedings of the National Academy of Sciences of the United States of America
A 3000-year varved record of glacier activity and climate change from the proglacial lake Hvítárvatn, IcelandQuaternary Science Reviews
New palaeointensity data from Holocene Icelandic lavasPhysics of the Earth and Planetary Interiors
Perception of volcanic eruptions in Iceland
Lava-ground ice interactions in Elysium Planitia, MarsJournal of Geophysical Research E: Planets
Dynamic magma mixing revealed by the 2010 Eyjafjallajökull eruptionSolid Earth Discussions
A model for syn-eruptive groundwater flow during the phreatoplinian phase of the 28-29 March 1875 Askja volcano eruption, IcelandJournal of Volcanology and Geothermal Research
Integrating multiple space and ground sensors to track volcanic activity
Remobilization of silicic intrusion by mafic magmas during the 2010 Eyjafjallajökull eruptionSolid Earth

2010

Microanalysis of tephra by LA-ICP-MS - Strategies, advantages and limitations assessed using the Thorsmörk ignimbrite (Southern Iceland)Chemical Geology
Tephra dispersal and eruption dynamics of wet and dry phases of the 1875 eruption of Askja Volcano, IcelandBulletin of Volcanology
Widespread dispersal of Icelandic tephraJournal of Quaternary Science
Explosive lava-water interactions IIBulletin of Volcanology
Explosive lava-water interactions IBulletin of Volcanology
The impact of the 1783-1784 AD Laki eruption on global aerosol formation processes and cloud condensation nucleiAtmospheric Chemistry and Physics

2009

Segregations in Surtsey lavas (Iceland) reveal extreme magma differentiation during late stage flow emplacementSpecial Publications of IAVCEI
Floods of water and lava in the Columbia River Basin
Studies in Volcanology: The Legacy of George Walker
The endogenous growth of pahoehoe lava lobes and morphology of lava-rise edgesSpecial Publications of IAVCEI
Eruptions:
Physical volcanology of continental large igneous provincesSpecial Publications of IAVCEI
Preface
A 2000 year record of climate variations reconstructed from Haukadalsvatn, West IcelandJournal of Paleolimnology
Tephra Layers in a Sediment Core from Lake Hestvatn, Southern Iceland
Effusive activity in the 1963-1967 Surtsey eruption, IcelandSpecial Publications of IAVCEI
Abrupt shifts between wet and dry phases of the 1875 eruption of Askja VolcanoJournal of Volcanology and Geothermal Research
Effects of megascale eruptions on Earth and MarsSpecial Paper of the Geological Society of America
Melt segregations in a Columbia River Basalt lava flowLithos
Determination of rapid Deccan eruptions across the Cretaceous-Tertiary boundary using paleomagnetic secular variationJournal of Geophysical Research: Solid Earth

2008

The AD 1362 Öræfajökull eruption, S.E. IcelandJournal of Volcanology and Geothermal Research
Postglacial volcanism in IcelandJokull
Katla volcano, IcelandBulletin of Volcanology
Contrasting styles of welding observed in the proximal Askja 1875 eruption deposits IJournal of Volcanology and Geothermal Research
Contrasting styles of welding observed in the proximal Askja 1875 eruption deposits IIJournal of Volcanology and Geothermal Research

2007

Recent volatile evolution in the magmatic system of Hekla volcano, IcelandEarth and Planetary Science Letters
Role of Syn-eruptive Cooling and Degassing on Textures of Lavas from the ad 1783-1784 Laki Eruption, South IcelandJournal of Petrology
Rootless cones in Iceland and on Mars
Volcanism in Iceland in historical timeJournal of Geodynamics
Hvað leynist undir Kötlu? Breytingar á kvikukerfi síðustu 8400 árin í ljósi gjóskulagarannsóknaNáttúrufræðingurinn
Survival of the Mýrdalsjökull ice cap through the Holocene thermal maximumAnnals of Glaciology

2006

Flood lavas on Earth, Io and MarsJournal of the Geological Society
High-latitude eruptions cast shadow over the African monsoon and the flow of the NileGeophysical Research Letters
Volatile fluxes during flood basalt eruptions and potential effects on the global environmentEarth and Planetary Science Letters
Contamination of water supplies by volcanic ashfallJournal of Volcanology and Geothermal Research
Modeling the distribution of the volcanic aerosol cloud from the 1783-1784 Laki eruptionJournal of Geophysical Research Atmospheres

2005

Environmental and climatic effects from atmospheric SO2 mass-loading by Icelandic flood lava eruptions
The Katla volcano S-Iceland: Holocene tephra stratigraphy and eruption frequencyJokull
Petrogenesis of lavas from Detroit SeamountGeochemistry, Geophysics, Geosystems
Morphology, surface structures, and emplacement of lavas produced by Laki, A.D. 1783-1784Special Paper of the Geological Society of America
Gas Fluxes from Flood Basalt EruptionsElements
Volcanic air pollution and mortality in France 1783-1784Comptes Rendus - Geoscience

2004

Komatiites and nickel sulphide orebodies of the Black Swan area, Yilgarn Craton, Western Australia. 1. Petrology and volcanology of host rocksMineralium Deposita
Magma volume, volatile emissions, and stratospheric aerosols from the 1815 eruption of TamboraGeophysical Research Letters
Accretionary-lapilli-bearing pyroclastic rocks at ODP Leg 192 Site 1184Geological Society Special Publication
Clustering within rootless cone groups on Iceland and MarsJournal of Geophysical Research E: Planets
Icelandic analogs to Martian flood lavasGeochemistry, Geophysics, Geosystems

2003

ODP Leg 197: A Paleomagnetic Test for Motion of the Hawaiian HotspotJOIDES Journal
The Emperor SeamountsScience
The 1783-1785 A.D. Laki-Grímsvötn eruptions I : a critical look at the contemporary chroniclesJokull
Laki-Grímsvötn eruptions II: Appraisal based on contemorary accountsJokull
Atmospheric and environmental effects of the 1783-1784 Laki eruptionJournal of Geophysical Research: Atmospheres
Sulphur release from flood lava eruptions in the Veidivötn, Grímsvötn and Katla volcanic systems, IcelandGeological Society Special Publication

2002

Iceland

2001

Tephra Layers in a Sediment Core from Lake Hestvatn, Southern Iceland: Implications for Evaluating Sedimentation Processes and Environmental Impacts on a Lacustrine System Caused by Tephra Fall Deposits in the Surrounding Watershed
Original essay by Professor S.P. van Swinden on ‘Observations on the cloud (dry fog), which appeared in June 1783’, translated and prepared for publication by T. Thordarson and S. LintlemanJokull
Real-time observations of the Laki sulfuric aerosol cloud in Europe during 1783 as documented by professor S. P. van Swinden at Franeker, HollandJokull
Rootless cones on Mars indicating the presence of shallow equatorial ground ice in recent timesGeophysical Research Letters
New estimates of sulfur degassing and atmospheric mass-loading by the 934 AD Eldgjá eruption, IcelandJournal of Volcanology and Geothermal Research

2000

Terrestrial analogs and thermal models for Martian flood lavasJournal of Geophysical Research E: Planets
Magma origin and evolution of white Island (Whakaari) volcano, Bay of Plenty, New ZealandJournal of Petrology
Discussion of "Pulsed inflation of pahoehoe lava flows: implications for flood basalt emplacement" by Anderson SW, Stofan ER, Smrekar ER, Guest JE and Wood BEarth and Planetary Science Letters
Analysis of rootless eruption models for origins of small cratered cones of Elysium Basin and Amazonis PlanitiaGeophysical Research Letters
Physical volcanology of lava flows on Surtsey, Iceland

1999

Petrologic investigations of the 1995 and 1996 eruptions of Ruapehu volcano, New ZealandBulletin of Volcanology
Applications of recent studies on the emplacement of basaltic lava flows to the Deccan TrapsJournal of the Geological Society of India

1998

The importance of pāhoehoeAnnual Review of Earth and Planetary Sciences
Magmatic sulfur content of the 1995-1996 Ruapehu eruptions, New Zealand
The Roza member, Columbia River Basalt GroupJournal of Geophysical Research: Solid Earth
New data on the age and origin of the Leidólfsfell cone group in South IcelandJokull

1997

Emplacement of continental flood basalt lava flows
A radiocarbon age determination for Mount Edgecumbe (Putauaki) volcano, Bay of Plenty, New ZealandNew Zealand Journal of Geology and Geophysics

1996

Sulfur, chlorine and fluorine degassing and atmospheric loading by the Roza eruption, Columbia River Basalt Group, Washington, USAJournal of Volcanology and Geothermal Research
Sulfur, chlorine, and fluorine degassing and atmospheric loading by the 1783-1784 AD Laki (Skaftár Fires) eruption in IcelandBulletin of Volcanology
A new model for the emplacement of Columbia River basalts as large, inflated pahoehoe lava flow fieldsGeophysical Research Letters

1995

A multi-frequency laboratory investigation of attenuation and scattering from volcanic ash cloudsIEEE Transactions on Geoscience and Remote Sensing

1994

Atmospheric aerosol loading and transport due to the 1783-84 Laki Eruption in Iceland, interpreted from ash particles and acidity in the GISP2 ice coreQuaternary Research

1993

The Laki (Skaftár Fires) and Grímsvötn eruptions in 1783-85Bulletin of Volcanology
The Laki (Skaftár Fires) and Grímsvötn eruptions in 1783-1785Bulletin of Volcanology

1992

Correction to “Extreme magma homogeneity in the 1783–84 Lakagigar EruptionGeophysical Research Letters
The 1991 eruption of Hekla, IcelandBulletin of Volcanology
Local effects of volcanoes on the hydrosphere: Example from Hekla, southern Iceland

1991

The 1783-84 Laki eruption: Tephra production and course of events
Extreme magma homogeneity in the 1783- 1784 Lakagígar eruption: Origin of a large volume of evolved basalt in IcelandGeophysical Research Letters
Extreme magma homogeneity in the 1783–84 Lakagigar EruptionGeophysical Research Letters

1988

Old maps help interpret Icelandic eruptionsEos

1984

The tephra deposit from the Skaftár Fires in 1783-84 AD
Gjóskan frá Skaftáreldum 1783

Keywords for Specialisation:

Paleoclimatology

Natural hazards

Geology of mineralized succession