A. Stefánsson

Geochemical and isotope constraints on the hydrogeology and geochemistry of the geothermal waters in the Shandong Peninsula, China
202314 citationsauthor #2
Lithogeochemistry of the Nesjavellir Geothermal Field, Sw Iceland - Implications for Elemental Mass Movement in Active Geothermal Systems
20230 citationsauthor #5
Deep magma degassing and volatile fluxes through volcanic hydrothermal systems: Insights from the Askja and Kverkfjöll volcanoes, Iceland
202314 citationsauthor #10
Tectonic and geological setting influence hot spring microbiology.
20239 citationsauthor #3
Complex organic matter degradation by secondary consumers in chemolithoautotrophy-based subsurface geothermal ecosystems
202311 citationsauthor #12
Ultrahigh-precision noble gas isotope analyses reveal pervasive subsurface fractionation in hydrothermal systems
202317 citationsauthor #14
Geochemistry of thermal fluids and the genesis of granite-hosted Huangshadong geothermal system, Southeast China
202336 citationsauthor #2
Boron isotope evidence for devolatilized and rehydrated recycled materials in the Icelandic mantle source
202213 citationsauthor #9
Rapid source shifting of a deep magmatic system revealed by the Fagradalsfjall eruption, Iceland
20223 citationsauthor #30
Hydrogen emissions from hydrothermal fields in Iceland and comparison with the Mid-Atlantic Ridge
202228 citationsauthor #4
Ancient and recycled sulfur sampled by the Iceland mantle plume
202224 citationsauthor #11
Melt-brine interaction in silicic magma mushes
20220 citationsauthor #4
A pre-injection assessment of CO2 and H2S mineralization reactions at the Nesjavellir (Iceland) geothermal storage site
202231 citationsauthor #2
Rapid shifting of a deep magmatic source at Fagradalsfjall volcano, Iceland
202271 citationsauthor #30
Silica scaling and boiling effect on corrosion behaviour of nickel-based alloys associated with superheated hydrothermal fluids containing HCl, H2S and CO2
20222 citationsauthor #2
From rift to off-rift: The sulfate cycle in the oceanic crust
20220 citationsauthor #2
Alteration of basaltic glass within the Surtsey hydrothermal system, Iceland – Implication to oceanic crust seawater interaction
202213 citationsauthor #6
Equilibrium and kinetic controls on molecular hydrogen abundance and hydrogen isotope fractionation in hydrothermal fluids
202228 citationsauthor #7
High temperature generation and equilibration of methane in terrestrial geothermal systems: evidence from clumped isotopologues
202126 citationsauthor #2
Source controls on sulfur abundance and isotope fractionation in hydrothermal fluids in the Olkaria geothermal field, Kenya
202110 citationsauthor #5
Sulfate (re-)cycling in the oceanic crust: Effects of seawater-rock interaction, sulfur reduction and temperature on the abundance and isotope composition of anhydrite
202115 citationsauthor #2
Thermodynamic modeling of supercritical fluid composition at high temperatures (380-600°C) and low pressures (p <0.3 kbar)
20210 citationsauthor #1
Chlorine isotope ratios record magmatic brine assimilation during rhyolite genesis
202117 citationsauthor #5
The Nesjavellir (Iceland) geothermal system: the efficiency and long-term effects of the industrial CO2 and H2S storage on reservoir fluid composition
20210 citationsauthor #9
Primordial and recycled sulfur sampled by the Iceland mantle plume
20211 citationsauthor #11
Instrumental mass fractionation during sulfur isotope analysis by secondary ion mass spectrometry in natural and synthetic glasses
202116 citationsauthor #11
3He/4He monitoring of groundwater in Hafralækur, North Iceland: preliminary results
20210 citationsauthor #5
Design of a scaling reduction system for geothermal applications
20213 citationsauthor #12
Thermodynamic and kinetic constraints on molecular hydrogen abundance and isotope systematics in hydrothermal fluids
20210 citationsauthor #7
Secondary Mineralogy Associated with Supercritical Fluid Formation at Magmatic-Geothermal Contact Zone
20210 citationsauthor #3
The use of noble gas isotopes to trace subsurface boiling temperatures in Icelandic geothermal systems
202127 citationsauthor #7
H2S sequestration traced by sulfur isotopes at Hellisheiði geothermal system, Iceland
20203 citationsauthor #2
Assessing Sulfur Isotope Variability in the Icelandic Mantle: Evidence from Subglacial Glasses and Melt Inclusions
20200 citationsauthor #12
Corrosion testing of materials in simulated superheated geothermal environment
202024 citationsauthor #2
Hydrothermal 15N15N abundances constrain the origins of mantle nitrogen
202074 citationsauthor #14
Impact of fluid-rock interaction on water uptake of the Icelandic crust: Implications for the hydration of the oceanic crust and the subducted water flux
202013 citationsauthor #2
Fluids in Geothermal Systems
202031 citationsauthor #2
The Surtsey Volcano Geothermal System: An Analogue to Constrain Elemental Cycling in Seamounts?
20200 citationsauthor #2
Corrigendum to “Corrosion testing of materials in simulated superheated geothermal environment” [Corros. Sci. 168 (2020) 10]
20202 citationsauthor #2
The Boron Isotope Systematics of Icelandic Basalts and Melt Inclusions
20200 citationsauthor #8
Assessing the sources of inorganic carbon in surface-, soil- and non-thermal groundwater in Iceland by δ13C and 14C
202015 citationsauthor #2
Geochemical constraints on supercritical fluids in geothermal systems
202025 citationsauthor #3
Volcanic and Geothermal Redox Engines
202021 citationsauthor #2
Relative abundance of thiolated species of As, Mo, W, and Sb in hot springs of Yellowstone National Park and Iceland.
202031 citationsauthor #7
The Surtsey volcano geothermal system: An analogue for seawater-oceanic crust interaction with implications for the elemental budget of the oceanic crust
202017 citationsauthor #2
O, H and C isotopic systematics of Icelandic groundwater
20190 citationsauthor #2
Operational report for the 2017 Surtsey Underwater volcanic System for Thermophiles, Alteration processes and INnovative concretes (SUSTAIN) drilling project at Surtsey Volcano, Iceland
201913 citationsauthor #10
Supercritical fluids around magmatic intrusions: IDDP-1 at Krafla, Iceland
201932 citationsauthor #2
Supercritical Fluid Geochemistry in Geothermal Systems
201917 citationsauthor #3
Abiogenesis not required to explain the origin of volcanic-hydrothermal hydrocarbons
201942 citationsauthor #2
Isotope and chemical constrains on the hydrogeology of the low-temperature geothermal system in Shandong Peninsula, China
20190 citationsauthor #2
Corrosion Testing of UNS S31603 in Simulated HT Geothermal Environment at Boiling, Superheated and Condensation Conditions
20194 citationsauthor #2
Hydrogen isotope systematics and water contents of the Icelandic crust - Implications for the water uptake of the oceanic crust
20190 citationsauthor #2
SUSTAIN drilling at Surtsey volcano, Iceland, tracks hydrothermal and microbiological interactions in basalt 50 years after eruption
201925 citationsauthor #5
Hydrochemical Changes Before and After Earthquakes Based on Long‐Term Measurements of Multiple Parameters at Two Sites in Northern Iceland—A Review
201977 citationsauthor #8
Iron(III) chloride complexation in hydrothermal solutions: A combined spectrophotometric and density functional theory study
201928 citationsauthor #1
Isotope (δD, δ18O, 3H, δ13C, 14C) and chemical (B, Cl) Constrains on water origin, mixing, water-rock interaction and age of low-temperature geothermal water
201951 citationsauthor #1
Ground-Based measurements of the 2014-2015 holuhraun volcanic cloud (Iceland)
201858 citationsauthor #30
Towards ‘green’ geothermal energy: Co-mineralization of carbon and sulfur in geothermal reservoirs
201832 citationsauthor #5
ICDP SUSTAIN drilling at Surtsey Volcano: A time-lapse drill core record and hydrothermal borehole observatory in basalt 50 years after eruption
20180 citationsauthor #10
Thermodynamics of Geothermal Fluids
201810 citationsauthor #1
Preliminary results from 1979 and 2017 ICDP SUSTAIN drilling: the sub-terrestrial biosphere of the neo-island Surtsey
20180 citationsauthor #6
Isotope Systematics of Volatile Elements in Icelandic Thermal Fluid
20180 citationsauthor #1
H2S sequestration process and sustainability in geothermal systems
201821 citationsauthor #6
Tracing olivine carbonation and serpentinization in CO2-rich fluids via magnesium exchange and isotopic fractionation
201815 citationsauthor #2
Silicon and oxygen isotopes unravel quartz formation processes in the Icelandic crust
201850 citationsauthor #2
Origin of secondary quartz in the Icelandic crust - A coupled δ18O and δ30Si study
20180 citationsauthor #2
Reawakening of Öræfajökull volcano monitored using a multidisciplinary approach
20181 citationsauthor #5
Corrosion Testing of UNS N06625 in a Simulated High Temperature Geothermal Environment
20188 citationsauthor #2
Geochemistry and speciation of Fe(II) and Fe(III) in natural geothermal water, Iceland
201711 citationsauthor #2
Pollution from the 2014–15 Bárðarbunga eruption monitored by snow cores from the Vatnajökull glacier, Iceland
20178 citationsauthor #7
Major impact of volcanic gases on the chemical composition of precipitation in Iceland during the 2014–2015 Holuhraun eruption
201731 citationsauthor #1
Mineral dissolution in porous media: An experimental and modeling study on kinetics, porosity and surface area evolution
201735 citationsauthor #3
Gas chemistry of Icelandic thermal fluids
201735 citationsauthor #1
Corrosion Behavior of High Alloy Austenitic Stainless Steel in Simulated High Temperature Geothermal Environment
20174 citationsauthor #3
Sulfur isotopes in Icelandic thermal fluids
201726 citationsauthor #2
Origin of a divergent mtDNA lineage of a freshwater snail species, Radix balthica, in Iceland: cryptic glacial refugia or a postglacial founder event?
201745 citationsauthor #7
Magnesium bicarbonate and carbonate interactions in aqueous solutions: An infrared spectroscopic and quantum chemical study
201734 citationsauthor #1
Isotope systematics of Icelandic thermal fluids
201766 citationsauthor #1
Speciation matters – views on iron and sulfur chemistry in geothermal water, Iceland
20160 citationsauthor #2
Hydrothermal Rock-Fluid Interactions in 15-year-old Submarine Basaltic Tuff at Surtsey Volcano, Iceland
20160 citationsauthor #6
CHLORINE BEHAVIOR IN HYDROTHERMAL SYSTEMS
20160 citationsauthor #4
Origin of a divergent mtDNA lineage of a freshwater snail species, Radix balthica, in Iceland: cryptic glacial refugia or a postglacial founder event?
20160 citationsauthor #7
Subducted lithosphere controls halogen enrichments in the Iceland mantle plume source
201637 citationsauthor #3
Chlorine isotope geochemistry of Icelandic thermal fluids: Implications for geothermal system behavior at divergent plate boundaries
201630 citationsauthor #1
Determination of Fe(II), Fe(III) and Fetotal in thermal water by ion chromatography spectrophotometry (IC-Vis)
201622 citationsauthor #2
Quantifying mixing, boiling, degassing, oxidation and reactivity of thermal waters at Vonarskard, Iceland
201618 citationsauthor #1
Mantle CO 2 degassing through the Icelandic crust: Evidence from carbon isotopes in groundwater
201639 citationsauthor #1
Ground-based measurements of the emission rate and composition of gases from the Holuhraun eruption
20153 citationsauthor #17
Volatile element isotope systematics of volcanic geothermal fluids, Krafla Iceland
20150 citationsauthor #1
Surface water chemistry at Torfajökull, Iceland—Quantification of boiling, mixing, oxidation and water–rock interaction and reconstruction of reservoir fluid composition
201514 citationsauthor #2
The bulk isotopic composition of hydrocarbons in subaerial volcanic-hydrothermal emissions from different tectonic settings
20150 citationsauthor #8
Multiple sulfur isotope systematics of Icelandic geothermal fluids and the source and reactions of sulfur in volcanic geothermal systems at divergent plate boundaries
201543 citationsauthor #1
Environmental pressure from the 2014–15 eruption of Bárðarbunga volcano, Iceland
2015122 citationsauthor #9
Iron speciation in hydrothermal solutions - an experimental and theoretical study
20150 citationsauthor #1
Hydrogen Sulfide Sequestration and Storage in Geothermal System: New Mitigation Strategy to Reduce H 2 S from the Atmosphere and Detect its Mineralization with Multiple Sulfur Isotopic Systematics
20150 citationsauthor #2
The effect of the 2014 Holuhraun eruption (Bárdarbunga, Iceland) on precipitation chemistry and associated environmental impact
20151 citationsauthor #7
The source and longevity of sulfur in an Icelandic flood basalt eruption plume
20150 citationsauthor #18
Utilization of Geothermal Resources
201523 citationsauthor #3
Time-lapse characterization of hydrothermal seawater and microbial interactions with basaltic tephra at Surtsey Volcano
201516 citationsauthor #16

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