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  1. AGU Members
  2. Freysteinn Sigmundsson
FS
Member Since 1988
Freysteinn Sigmundsson
Research scientist, Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland
Member, Geodesy Fellows Committee
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Professional Experience
Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland
Research scientist
2004 - Present
Education
University of Colorado Boulder
Doctorate
1992
Freysteinn's AGU Research
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A Shape Optimization Approach for Inferring Sources of Volcano Ground Deformation
GEOPHYSICAL RESEARCH LETTERS
07 april 2026
Interplay of Tectonics and Topography Facilitated Sudden Dyke Intrusion in 2022 at São Jorge Island, Azores
GEOPHYSICAL RESEARCH LETTERS
19 march 2026
Volcano-Tectonics in Action: Geodetic Insights from the Ongoing Reykjanes Fires, Iceland
GLOBAL APPLICATIONS OF VOLCANO GEODESY I ORAL
geodesy | 15 december 2025
Tectonic Stress as the Driving Mechanism for Dike Opening in an Oblique Rift Setting: A Deformation Model of the 2021 Fagradalsfjall Dike, Iceland
GEOPHYSICAL RESEARCH LETTERS
25 april 2025
The Influence of Variable Host Rock Cohesion and Magma Viscosity on Intrusion‐Fault Interaction: Insights From Laboratory Models
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
25 april 2025
Continuous Subsidence of Dallol Volcano Caused by Magmatic, Hydrothermal, and Salt Dissolution Processes: Insights From InSAR Observations
GEOCHEMISTRY, GEOPHYSICS, GEOSYSTEMS
09 april 2025
Forecasting fissure eruptions and the potential for a Laki-size eruption in Iceland
ERUPTIVE PROCESSES, HAZARDS, AND FORECASTING – SESSION 3B
13 february 2025
Unravelling the multiple factors influencing magma transfer dynamics in caldera-rift settings
COUPLED MAGMATIC-TECTONIC CALDERA-RIFT SYSTEMS - SESSION 2A
11 february 2025
Volunteer Experience
2025 - 2026
Member
Geodesy Fellows Committee
2023 - 2024
Member
Geodesy Fellows Committee
Honors & Awards
William Bowie Lecture
Received December 2023
Video
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Union Fellow
Received December 2022
Citation
For pioneering the application of GPS and InSAR in volcanic settings and leading innovative multidisciplinary research into Icelandic volcanoes
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