Sigrun Hreinsdottir


Full Name: Sigrun Hreinsdottir

Position: Geodetic Scientist

Contact details

Email me here
Phone: +64-4-570 4674


1997: BSc, Physics; 1999: MSc, Geophysics; 2005: PhD, Geophysics

Areas of expertise

Geophysics: Crustal deformation and neotectonics
Geophysics: Earthquake analysis
Geophysics: GNSS
Geophysics: GPS
Geophysics: Geodetic data analysis
Geophysics: Geodynamics
Geophysics: Vertical Land movement
Geophysics: Volcano Geodesy
Geophysics: Volcano Geophysics

Professional activities

American Geophysical Union: Member
Geoscience Society of Iceland: Member
Iceland Glaciological Society: Member
Geoscience Society of New Zealand: Member
Seismology Society of America: Member
IAVCEI (International Association of Volcanology & Chemistry Earth's Interior): Member

Major publications

Einarsson, P.; Hjartardóttir, Á.R.; Hreinsdottir, S.; Imsland, P. 2020 The structure of seismogenic strike-slip faults in the eastern part of the Reykjanes Peninsula Oblique Rift, SW Iceland. Journal of Volcanology and Geothermal Research, 391: article 106372; doi: 10.1016/j.jvolgeores.2018.04.029

Gudjónsdóttir, S.R.; Ilyinskaya, E.; Hreinsdottir, S.; Bergsson, B.; Pfeffer, M.A.; Michalczewska, K.; Aiuppa, A.; Óladóttir, A.A. 2020 Gas emissions and crustal deformation from the Krýsuvík high temperature geothermal system, Iceland. Journal of Volcanology and Geothermal Research, 391: article 106350; doi: 10.1016/j.jvolgeores.2018.04.007

Juncu, D.; Árnadóttir, Th.; Geirsson, H.; Guðmundsson, G.B.; Lund, B.; Gunnarsson, G.; Hooper, A.; Hreinsdottir, S.; Michalczewska, K. 2020 Injection-induced surface deformation and seismicity at the Hellisheidi geothermal field, Iceland. Journal of Volcanology and Geothermal Research, 391: article 106337; doi: 10.1016/j.jvolgeores.2018.03.019

Grapenthin, R.; Hreinsdottir, S.; van Eaton, A. 2018 Volcanic hail detected with GPS : the 2011 eruption of Grímsvötn Volcano, Iceland. Geophysical Research Letters, 45(22): doi: 10.1029/2018GL080317

Wallace, L.M.; Hreinsdottir, S.; Ellis, S.M.; Hamling, I.J.; D'Anastasio, E.; Denys, P. 2018 Triggered slow slip and afterslip on the southern Hikurangi subduction zone following the Kaikoura earthquake. Geophysical Research Letters, 45(10): 4710-4718; doi: 10.1002/2018GL077385

Árnadóttir, T.; Haines, A.J.; Geirsson, H.; Hreinsdottir, S. 2018 A preseismic strain anomaly detected before the M6 earthquakes in the South Iceland Seismic Zone from GPS station velocities. Journal of Geophysical Research. Solid Earth, 123(12): 11,091-11,111; doi: 10.1029/2018JB016068

Clark, K.J.; Nissen, E.K.; Howarth, J.D.; Hamling, I.J.; Mountjoy, J.J.; Ries, W.F.; Jones, K.E.; Goldstein, S.; Cochran, U.A.; Villamor, P.; Hreinsdottir, S.; Litchfield, N.J.; Mueller, C.; Berryman, K.R.; Strong, D.T. 2017 Highly variable coastal deformation in the 2016 MW7.8 Kaikoura earthquake reflects rupture complexity along a transpressional plate boundary. Earth and Planetary Science Letters, 474: 334-344; doi: 10.1016/j.epsl.2017.06.048

Compton, K.; Bennett, R.A.; Hreinsdottir, S.; van Dam, T.; Bordoni, A.; Berletta, V.; Spada, G. 2017 Short-term variations of Icelandic ice cap mass inferred from cGPS coordinate time series. Geochemistry Geophysics Geosystems, 18(6): 2099–2119; doi: 10.1002/2017GC006831

Drouin, V.; Sigmundsson, F.; Verhagen, S.; Ofeigsson, B.G.; Spaans, K.; Hreinsdottir, S. 2017 Deformation at Krafla and Bjarnarflag geothermal areas, Northern Volcanic Zone of Iceland, 1993–2015. Journal of Volcanology and Geothermal Research, 344: 92-105; doi: 10.1016/j.jvolgeores.2017.06.013

Drouin, V.; Sigmundsson, F.; Ófeigsson, B.G.; Hreinsdottir, S.; Sturkell, E.; Einarsson, P. 2017 Deformation in the Northern Volcanic Zone of Iceland 2008-2014 : an interplay of tectonic, magmatic, and glacial isostatic deformation. Journal of Geophysical Research. Solid Earth, 122(4): 3158-3178; doi: 10.1002/2016JB013206

Hamling, I.J.; Hreinsdottir, S.; Clark, K.J.; Elliot, J.; Liang, C.; Fielding, E.; Litchfield, N.J.; Villamor, P.; Wallace, L.M.; Wright, T.J.; D'Anastasio, E.; Bannister, S.; Burbidge, D.R.; Denys, P.; Gentle, P.; Howarth, J.D.; Mueller, C.; Palmer, N.G.; Pearson, C.; Power, W.L.; Barnes, P.; Barrell, D.J.A.; Van Dissen, R.J.; Langridge, R.M.; Little, T.; Nicol, A.; Pettinga, J.; Rowland, J.; Stirling, M.W. 2017 Complex multifault rupture during the 2016 Mw 7.8 Kaikoura earthquake, New Zealand. Science, 356(6334): eaam7194; doi: 10.1126/science.aam7194

Parks, M.M.; Heimisson, E.R.; Sigmundsson, F.; Hooper, A.; Vogfjoerd, K.S.; Arnadottir, T.; Ofeigsson, B.; Hreinsdottir, S.; Hjartardottir, A.R.; Einarsson, P.; Gudmundsson, M.T.; Högnadottir, T.; Jonsdottir, K.; Hensch, M.; Bagnardi, M.; Dumont, S.; Drouin, V.; Spaans, K.; Olafsdottir, R. 2017 Evolution of deformation and stress changes during the caldera collapse and dyking at Bárdarbunga, 2014–2015 : implication for triggering of seismicity at nearby Tungnafellsjökull volcano. Earth and Planetary Science Letters, 462: 212-223; doi: 10.1016/j.epsl.2017.01.020

Wallace, L.M.; Kaneko, Y.; Hreinsdottir, S.; Hamling, I.J.; Peng, Z.; Bartlow, N.; D'Anastasio, E.; Fry, B. 2017 Large-scale dynamic triggering of shallow slow slip enhanced by overlying sedimentary wedge. Nature geoscience, 10(10): 765-770; doi: 10.1038/ngeo3021

Beavan, R.J.; Wallace, L.M.; Palmer, N.G.; Denys, P.; Ellis, S.M.; Fournier, N.; Hreinsdottir, S.; Pearson, C.; Denham, M. 2016 New Zealand GPS velocity field : 1995-2013. New Zealand Journal of Geology and Geophysics, 59(1): 5-14; doi: 10.1080/00288306.2015.1112817

Drouin, V.; Heki, K.; Sigmundsson, F.; Hreinsdottir, S.; Ofeigsson, B.G. 2016 Constraints on seasonal load variations and regional rigidity from continuous GPS measurements in Iceland, 1997–2014. Geophysical Journal International, 205(3): 1843-1858; doi: 10.1093/gji/ggw122

Gudmundsson, M.T.; Jonsdottir, K.; Hooper, A.; Holohan, E.P.; Halldorsson, S.A.; Ofeigsson, B.G.; Cesca, S.; Vogfjoerd, K.S.; Sigmundsson, F.; Hoegnadottir, T.; Einarsson, P.; Sigmarsson, O.; Jarosch, A.H.; Jonasson, K.; Magnusson, E.; Hreinsdottir, S.; Bagnardi, M.; Parks, M.M.; Hjoerleifsdottir, V.; Palsson, F.; Walter, T.R.; Schoepfer, M.P.J.; Heimann, S.; Reynolds, H.I.; Dumont, S.; Bali, E.; Gudfinnsson, G.H.; Dahm, T.; Roberts, M.J.; Hensch, M.; Belart, J.M.C.; Spaans, K.; Jakobsson, S.; Gudmundsson, G.B.; Fridriksdottir, H.M.; Drouin, V.; Duerig, T.; Athalgeirsdottir, G.; Riishuus, M.S.; Pedersen, G.B.M.; van Boeckel, T.; Oddsson, B.; Pfeffer, M.A.; Barsotti, S.; Bergsson, B.; Donovan, A.; Burton, M.R.; Aiuppa, A. 2016 Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow. Science, 353(6296): article no. aaf8988; doi: 10.1126/science.aaf8988

Hamling, I.J.; Hreinsdottir, S. 2016 Reactivated afterslip induced by a large regional earthquake, Fiordland, New Zealand. Geophysical Research Letters, 43(6): 2526–2533; doi: 10.1002/2016GL067866

Hamling, I.J.; Hreinsdottir, S.; Bannister, S.; Palmer, N.G. 2016 Off-axis magmatism along a subaerial back-arc rift : observations from the Taupo Volcanic Zone, New Zealand. Science Advances, 2(6): article e1600288

Hamling, I.J.; Williams, C.A.; Hreinsdottir, S. 2016 Depressurization of a hydrothermal system following the August and November 2012 Te Maari eruptions of Tongariro, New Zealand. Geophysical Research Letters, 43(1): 168-175; doi: 10.1002/2015GL067264

Hurst, A.W.; Heise, W.; Hreinsdottir, S.; Hamling, I.J. 2016 Geophysics of the Taupo Volcanic Zone : a review of recent developments. p. 188-204; doi: 10.1016/j.geothermics.2015.09.008 IN: Chambefort, I.; Bignall, G. (eds) Taupo Volcanic Zone geothermal systems, New Zealand: Exploration, science and development. Elsevier. Geothermics 59B.

Compton, K.; Bennett, R.A.; Hreinsdottir, S. 2015 Climate-driven vertical acceleration of Icelandic crust measured by continuous GPS geodesy. Geophysical Research Letters, 42(3): 743-750; doi: 10.1002/2014GL062446

Hamling, I.J.; Hreinsdottir, S.; Fournier, N. 2015 The ups and downs of the TVZ : geodetic observations of deformation around the Taupo Volcanic Zone, New Zealand. Journal of Geophysical Research. Solid Earth, 120(6): 4667-4679; doi: 10.1002/2015JB012125

Hjaltadottir, S.; Vogfjoerth, K.S.; Hreinsdottir, S.; Slunga, R. 2015 Reawakening of a volcano : activity beneath Eyjafjallajökull Volcano from 1991 to 2009. Journal of Volcanology and Geothermal Research, 304: 194-205; doi: 10.1016/j.jvolgeores.2015.08.001

Sigmundsson, F.; Hooper, A.; Hreinsdottir, S.; Vogfjord, K.S.; Ofeigsson, B.G.; Heimisson, E.R.; Dumont, S.; Parks, M.; Spaans, K.; Gudmundsson, G.B.; Drouin, V.; Arnadóttir, T.; Jonsdottir, K.; Gudmundsson, M.T.; Hognadottir, T.; Fridriksdottir, H.M.; Hensch, M.; Einarsson, P.; Magnusson, E.; Samsonov, S.; Brandsdottir, B.; White, R.S.; Agustsdottir, T.; Greenfield, T.; Green, R.G.; Hjartardottir, A.R.; Pedersen, R.; Bennett, R.A.; Geirsson, H.; la Femina, P.C.; Bjornsson, H.; Palsson, F.; Sturkell, E.; Bean, C.J.; Mollhoff, M.; Braiden, A.K.; Eibl, E.P.S 2015 Segmented lateral dyke growth in a rifting event at Bárðarbunga volcanic system, Iceland. Nature, 517(7533): 191-195; doi: 10.1038/nature14111

Sigurthardottir, S.S.; Guthmundsson, M.T.; Hreinsdottir, S. 2015 Mapping of the Eldgjá lava flow on Mýrdalssandur with magnetic surveying. Jökull, 65: 61-72

Spaans, K.; Hreinsdottir, S.; Hooper, A.; Ofeigsson, B.G. 2015 Crustal movements due to Iceland's shrinking ice caps mimic inflow signal at Katla volcano. Scientific Reports, 5: article number 10285; doi: 10.1038/srep10285

Hamling, I.J.; D'Anastasio, E.; Wallace, L.M.; Ellis, S.M.; Motagh, M.; Samsonov, S.; Palmer, N.G.; Hreinsdottir, S. 2014 Crustal deformation and stress transfer during a propagating earthquake sequence : the 2013 Cook Strait sequence, Central New Zealand. Journal of Geophysical Research. Solid Earth, 119(7): 6080-6092; doi: 10.1002/2014JB011084

Hreinsdottir, S.; Sigmundsson, F.; Roberts, M.J.; Bjornsson, H.; Grapenthin, R.; Arason, P.; Arnadottir, T.; Holmjarn, J.; Geirsson, H.; Bennett, R.A.; Gudmundsson, M.T.; Oddsson, B.; Ofeigsson, B.G.; Villemin, T.; Jonsson, T.; Sturkell, E.; Hoskuldsson, A.; Larsen, G.; Thordarson, T.; Oladottir, B.A. 2014 Volcanic plume height correlated with magma-pressure change at Grímsvötn Volcano, Iceland. Nature geoscience, 7(3): 214-218; doi: 10.1038/ngeo2044

Metzger, S.; Jonsson, S.; Danielsen, G.; Hreinsdottir, S.; Jouanne, F.; Giardini, D.; Villemin, T. 2013 Present kinematics of the Tjörnes Fracture Zone, North Iceland, from campaign and continuous GPS measurements. Geophysical Journal International, 192(2): 441-455; doi: 10.1093/gji/ggs032

Bennett, R.A.; Serpelloni, E.; Hreinsdottir, S.; Brandon, M.T.; Buble, G.; Basic, T.; Casale, G.; Cavaliere, A.; Anzidei, M.; Marjonovic, M.; Minelli, G.; Molli, G.; Montanari, A. 2012 Syn-convergent extension observed using the RETREAT GPS network, northern Apennines, Italy. Journal of Geophysical Research. Solid Earth, 117(B4): B04408; doi: 10.1029/2011jb008744

Geirsson, H.; LaFemina, P.; Arnadottir, T.; Sturkell, E.; Sigmundsson, F.; Travis, M.; Schmidt, P.; Lund, B. Hreinsdottir, S.; Bennett, R. 2012 Volcano deformation at active plate boundaries : deep magma accumulation at Hekla volcano and plate boundary deformation in south Iceland. Journal of Geophysical Research. Solid Earth, 117: B11409; doi: 10.1029/2012JB009400

Buble, G.; Bennett, R.A.; Hreinsdottir, S. 2010 Tide gauge and GPS measurements of crustal deformation and sea level rise along the eastern margin of Adria. Journal of Geophysical Research. Solid Earth, 115(B2): B02404; doi: 10.1029/2008JB006155

Decriem, J.; Árnadóttir, T.; Hooper, A.; Geirsson, H.; Keiding, M.; Ófeigsson, B.G.; Sigmundsson, F.; Hreinsdottir, S.; LaFemina, P.; Bennett, R. 2010 The 2008 May 29 earthquake doublet in SW Iceland. Geophysical Journal International, 181(2): 1128-1146; doi: 10.1111/j.1365-246X.2010.04565.x

Geirsson, H.; Arnadottir, T.; Hreinsdottir, S.; Decriem, J.; LaFemina, P.C.; Jonsson, S.; Bennett, R.A.; Metzger, S.; Holland, A.; Sturkell, E.; Villemin, T.; Volsken, C.; Sigmundsson, F.; Einarsson, P.; Roberts, M.J.; Sveinbjornsson, H. 2010 Overview of results from continuous GPS observations in Iceland from 1995-2010. Jökull, 60: 3-22

Sigmundsson, F.; Hreinsdottir, S.; Hooper, A.; Árnadóttir, T.; Pedersen, R.; Roberts, M.J.; Óskarsson, N.; Auriac, A.; Decriem, J.; Einarsson, P.; Geirsson, H.; Hensch, M. Ófeigsson, B.G.; Sturkell, E.; Sveinbjoernsson, H.; Feigl, K.L. 2010 Intrusion triggering of the 2010 Eyjafjallajökull explosive eruption. Nature, 468(7322): 426-430; doi: 10.1038/nature09558

Spinler, J.C.; Bennett, R.A.; Anderson, M.L.; McGill, S.F.; Hreinsdottir, S.; McCallister, A. 2010 Present-day strain accumulation and slip rates associated with southern San Andreas and eastern California shear zone faults. Journal of Geophysical Research. Solid Earth, 115(B11): B11407; doi: 10.1029/2010JB007424

Bennett, R.A.; Fay, N.P.; Hreinsdottir, S.; Chase, C.; Zandt, G. 2009 Increasing long-wavelength relief across the southeastern flank of the Sierra Nevada, California. Earth and Planetary Science Letters, 287(1/2): 255-264; doi: 10.1016/j.epsl.2009.08.011

Hreinsdottir, S.; Arnadottir, T.; Decrim, J.; Geirsson, H.; Tyggvasson, A.; Bennett, R.A.; LaFemina, P. 2009 A complex earthquake sequence captured by the continuous GPS network in SW Iceland. Geophysical Research Letters, 36(12): L12309; doi: 10.1029/2009GL038391

Hreinsdottir, S.; Bennett, R.A. 2009 Active aseismic creep on the Alto Tiberina low-angle normal fault, Italy. Geology, 37(8): 683-686; doi: 10.1130/G30194A.1

Velasco, M.S.; Bennett, R.A.; Johnson, R.A.; Hreinsdottir, S. 2009 Subsurface fault geometries and crustal extension in the eastern Basin and Range Province, western US. Tectonophysics, 488(1-4): 131-142; doi: 10.1016/j.tecto.2009.05.010

Bennett, R.A.; Hreinsdottir, S.; Buble, G.; Basic, T.; Bacic, Z.; Marjanovic, M.; Casale, G.; Gendaszek, A.; Cowan, D. 2008 Eocene to present subduction of southern Adria mantle lithosphere beneath the Dinarides. Geology, 36(1): 3-6; doi: 10.1130/G24136A.1

Fay, N.P.; Bennett, R.A.; Hreinsdottir, S. 2008 Contemporary vertical velocity of the central Basin and Range and uplift of the southern Sierra Nevada. Geophysical Research Letters, 35(20): L20309; doi: 10.1029/2008GL034949

Freymueller, J.T.; Woodard, H.; Cohen, S.C.; Cross, R.; Elliott, J.; Larsen, C.F.; Hreinsdottir, S.; Zweck, C. 2008 Active deformation processes in Alaska, based on 15 years of GPS measurements. p. 1-42; doi: 10.1029/179GM02 IN: Freymueller, J.T.; Haeusller, P.J.; Wesson, R.L.; Ekstron, G. (eds) Active Tectonics and Seismic Potential of Alaska. Geophysical monograph 179.

Bennett, R.A.; Hreinsdottir, S. 2007 Constraints on relative vertical crustal motion for long baselines in the central Mediterranean region using continuous GPS. Earth and Planetary Science Letters, 257(3/4): 419-434; doi: 10.1016/j.epsl.2007.03.008

Bennett, R.A.; Hreinsdottir, S.; Velasco, M.S.; Fay, N.P. 2007 GPS constraints on vertical crustal motion in the northern Basin and Range. Geophysical Research Letters, 34(22): L22319; doi: 10.1029/2007GL031515

Pagli, C.; Sigmundsson, F.; Lund, B.; Sturkell, E.; Geirsson, H.; Einarsson, P.; Arnadottir, T.; Hreinsdottir, S. 2007 Glacio-isostatic deformation around the Vatnajokull ice cap, Iceland, induced by recent climate warming : GPS observations and finite element modeling. Journal of Geophysical Research. Solid Earth, 112(B8): B08405; doi: 10.1029/2006JB004421

Freed, A.M.; Burgmann, R.; Calais, E.; Freymueller, J.; Hreinsdottir, S. 2006 Implications of deformation following the 2002 Denali, Alaska, earthquake for postseismic relaxation processes and lithospheric rheology. Journal of Geophysical Research. Solid Earth, 111(B1): B01401; doi: 10.1029/2005JB003894

Hreinsdottir, S.; Freymueller, J.T.; Burgmann, R.; Mitchell, J. 2006 Coseismic deformation of the 2002 Denali Fault earthquake: Insights from GPS measurements. Journal of Geophysical Research. Solid Earth, 111(B3): B03308; doi: 10.1029/2005JB003676

Ohta, Y.; Freymueller, J.T.; Hreinsdottir, S.; Suito, H. 2006 A large slow slip event and the depth of the seismogenic zone in the south central Alaska subduction zone. Earth and Planetary Science Letters, 247(1/2): 108-116; doi: 10.1016/j.epsl.2006.05.013

Eberhart-Phillips, D.; Haeussler, P.J.; Freymueller, J.T.; Frankel, A.D.; Rubin, C.M.; Craw, P.; Ratchkovski, N.A.; Anderson, G.; Carver, G.A.; Crone, A.J.; Dawson, T.E.; Fletcher, H.; Hansen, R.; Harp, E.L.; Harris, R.A.; Hill, D.P.; Hreinsdottir, S.; Jibson, R.W.; Jones, L.M.; Kayen, R.; Keefer, D.K.; Larsen, C.F.; Moran, S.C.; Personius, S.F.; Plafker, G.; Sherrod, B.; Sieh, K.; Sitar, N.; Wallace, W.K. 2003 The 2002 Denali Fault earthquake, Alaska : a large magnitude, slip-partitioned event. Science, 300(5622): 1113-1118

Hreinsdottir, S.; Freymueller, J.T.; Fletcher, H.J.; Larsen, C.F.; Burgmann, R. 2003 Coseismic slip distribution of the 2002 MW7.9 Denali fault earthquake, Alaska, determined from GPS measurements. Geophysical Research Letters, 30(13): 1670; doi: 10.1029/2003GL017447

Sturkell, E.; Einarsson, L.; Sigmundsson, F.; Hreinsdottir, S.; Geirsson, H. 2003 Deformation of Grimsvotn volcano, Iceland : 1998 eruption and subsequent inflation. Geophysical Research Letters, 30(4): 1182; doi: 10.1029/2002GL016460

Arnadottir, T.; Hreinsdottir, S.; Gudmundsson, G.; Einarsson, P.; Heinert, M.; Volksen, C. 2001 Crustal deformation measured by GPS in the South Iceland Seismic Zone due to two large earthquakes in June 2000. Geophysical Research Letters, 28(21): 4031-4033; doi: 10.1029/2001GL013332

Hreinsdottir, S.; Einarsson, P.; Sigmundsson, F. 2001 Crustal deformation at the oblique spreading Reykjanes Peninsula, SW Iceland : GPS measurements from 1993 to 1998. Journal of Geophysical Research. Solid Earth, 106(B7): 13803-13816; doi: 10.1029/2001JB000428

  Image of Sigrun Hreinsdottir