Ronni Grapenthin email:

University of Alaska Fairbanks Geophysical Institute 2156 Koyukuk Drive Fairbanks, AK-99775

publications

submitted / in press

• Li, S., F. Sigmundsson, V. Drouin, B. Ofeigsson, M. Parks, K. Jonsdottir, R. Grapenthin, H. Geirsson, A. Hooper, Ground deformation after a caldera collapse: Contributions of magma inflow and viscoelastic response to the 2015-2018 deformation field around Bardarbunga, Iceland, submitted to JGR
• Grapenthin, R., The Global Navigation Satellite System (GNSS): Positioning, Velocities, and Reflections, book chapter to appear in Remote Sensing Applications for Characterization of Geohazards and Natural Resources. (preprint PDF), in press.

peer reviewed articles

22. Sigmundsson, F., V. Pinel, R. Grapenthin, A. Hooper, S. A. Halldorsson, P. Einarsson, B. G. Ofeigsson, E. R. Heimisson, K. Jonsdottir, M. T. Gudmundsson, K. Vogfjiörd, M. Parks, S. Li, V. Drouin, H. Geirsson, S. Dumont, H. M. Fridriksdottir, G. B. Gudmundsson, T. Wright, T. Yamasaki (2020), Unexpected large eruptions from buoyant magma bodies within viscoelastic crust, Nature Communications, Vol 11, 2403, doi:10.1038/s41467-020-16054-6, [pdf]
21. Grapenthin, R., S. Kelley, M. Person, and M. Folsom (2019), Decadal-scale aquifer dynamics and structural complexities at a municipal wellfield revealed by 25 years of InSAR and recent groundwater temperature observations, Water Resources Research, Vol. 55 (12), pp. 10636-10656, doi:10.1029/2018WR022552, [pdf]
20. Kaneko, Y., Y. Ito, B. Chow, L.M. Wallace, C. Tape, R. Grapenthin, E. D'Anastasio, S. Henrys, R. Hino (2019), Ultra-long duration of ground motion arising from a thick, low velocity sedimentary wedge, JGR, Vol 124(10), pp. 10347-10359, doi:10.1029/2019JB017795, [pdf]
19. Ruhl, C., D. Melgar, A. Chung, R. Grapenthin, R.M. Allen (2019), Quantifying the Value of Real-time Geodetic Constraints on Earthquake Early Warning using a Global Seismic and Geodetic Dataset, JGR, Vol. 124(4), pp. 3819-3837, doi:10.1029/2018JB016935 [pdf
18. Grapenthin, R., S. Hreinsdottir, and A. Van Eaton (2018), Volcanic Hail Detected With GPS: The 2011 Eruption of Grimsvötn Volcano, Iceland, GRL, doi:10.1029/2018GL080317, [pdf]
17. Murray, J.R., B.W. Crowell, R. Grapenthin, K. Hodgekinson, J.O. Langbein, T. Melbourne, D. Melgar, S.E. Minson, and D.A. Schmidt (2018), Development of a Geodetic Component for the U. S. West Coast Earthquake Early Warning System, SRL, doi:10.1785/0220180162, [pdf].
• UNAVCO Science Snapshot highlighting this paper
16. Zhang, Y., M. Person, V. Voller, D. Cohen, J. McIntosh, and R. Grapenthin (2018), Hydromechanical Impacts of Pleistocene Glaciations on Pore Fluid Pressure Evolution, Rock Failure, and Brine Migration within Sedimentary Basins and the Crystalline Basement, Water Resources Research, doi:10.1029/2017WR022464, [pdf].
15. Sigmundsson, F., M. Parks, R. Pedersen, K. Jonsdottir, B.G. Ofeigsson, R. Grapenthin, S. Dumont, P. Einarsson, V. Drouin, A.R. Hjartardottir, M.T. Gudmundsson, H. Geirsson, S. Hreinsdottir, E. Sturkell, E.R. Heimisson, Th. Högnadottir, A. Hooper, K. Vogfjörd, T. Barnie, and M. Roberts (2018), Magma movements in volcano plumbing systems and their associated ground deformation, pp. 285-322, in "Volcanic and Igneous Plumbing Systems", edited by Steffi Burchardt doi: 10.1016/B978-0-12-809749-6.00011-X [pdf].
14. Grapenthin, R., M. West, C. Tape, M. Gardine, and J. T. Freymueller (2018), Single-frequency instantaneous GNSS velocities resolve dynamic ground motion of the 2016 Mw7.1 Iniskin Earthquake, Alaska, SRL, Vol. 89(3), pp. 1040-1048, doi: 10.1785/0220170235 [pdf].
13. Ruhl, C., D. Melgar, R. Grapenthin, R.M. Allen (2017), The Value of Real-Time GNSS to Earthquake Early Warning, GRL, doi: 10.1002/2017GL074502 [pdf].
12. Grapenthin, R., M. West, and J. T. Freymueller (2017), The Utility of GNSS for Earthquake Early Warning in Regions with Sparse Seismic Networks, BSSA, doi: 10.1785/0120160317 [pdf].
• UNAVCO Science Snapshot highlighting this paper
11. Grapenthin, R., I.A. Johanson, R.M. Allen (2014), The 2014 Mw 6.0 Napa earthquake, California: Observations from real-time GPS-enhanced earthquake early warning GRL, Vol. 41, pp. 8269-8276, doi: 10.1002/2014GL061923 [pdf]
    • Science Editors' Choice (Science, 2014, Vol. 346, Issue 6214, pp. 1196).
    • KQED Science article on this paper
10. Grapenthin, R., I.A. Johanson, R.M. Allen (2014), Operational real-time GPS-enhanced earthquake early warning. JGR, Vol. 119, pp. 7944-7965, doi: 10.1002/2014JB011400 [pdf]
9. Hreinsdóttir, S., F. Sigmundsson, M.J. Roberts, H. Björnsson, R. Grapenthin, P. Arason, Th. Árnadóttir, J. Hólmjárn, H. Geirsson, R.A. Bennett, M.T. Gudmundsson, B. Oddsson, B.G. Ófeigsson, T. Villemin, T. Jónsson, E. Sturkell, Á Höskuldsson, G. Larsen, T. Thordarson, and B.A. Óladóttir (2014), Volcanic plume height correlated with magma-pressure change at Grímsviötn Volcano, Iceland, Nature Geoscience, doi:10.1038/ngeo2044, [pdf, pdf supplements]
   • ars technica
   • Live Science
   • National Geographic
   • Nature News
   • phys.org
8. Grapenthin, R. (2014), CrusDe: A plug-in based simulation framework for composable CRUStal DEformation simulations. Computers & Geosciences, Vol. 62, pp. 168-177 doi: 10.1016/j.cageo.2013.07.005 [pdf]
7. Grapenthin, R., J. T. Freymueller, S. S. Serovetnikov (2013), Surface Deformation of Bezymianny Volcano, Kamchatka, Recorded by GPS: The Eruptions from 2005-2010 and Long-term, Long-wavelength Subsidence, JVGR, Vol. 263, pp. 58-74, doi: 10.1016/j.jvolgeores.2012.11.012 [pdf]
6. Grapenthin, R., J. T. Freymueller, A. M. Kaufman (2013), Geodetic Observations during the 2009 eruption of Redoubt Volcano, Alaska, JVGR, Vol. 259, pp. 115-132, doi: 10.1016/j.jvolgeores.2012.04.021 [pdf]
5. Grapenthin, R. (2011), Computer programing for geosciences: Teach your students how to make tools, EOS Forum, Vol. 82, Issue 50, pp. 469-470, doi: 10.1029/2011EO500010 [pdf]
4. Grapenthin, R., and J. T. Freymueller (2011), The dynamics of a seismic wave field: Animation and analysis of kinematic GPS data recorded during the 2011 Tohoku-oki earthquake, Japan, Geophys. Res. Lett., 38, L18308, doi:10.1029/2011GL048405 [pdf]
   • GRL Editors' Highlight
   • LiveScience article
   • High-res versions of figures: Fig. 1, Fig. 2, Fig. 3
   • Supplementary animations: Movie 1, Movie 2, Movie 3
3. Ofeigsson, B., A. Hooper, F. Sigmundsson, E. Sturkell, and R. Grapenthin (2011), Deep magma storage at Hekla volcano, Iceland, revealed by InSAR time series analysis, JGR, 116, B05401, doi:10.1029/2010JB007576 [pdf]
2. Grapenthin, R., B. Ofeigsson, F. Sigmundsson, E. Sturkell, A. Hooper (2010), Pressure sources versus surface loads: Analyzing volcano deformation signal composition with an application to Hekla volcano, Iceland, Geophys. Res. Lett., 37, L20310, doi:10.1029/2010GL044590. [pdf]
1. Grapenthin, R., F. Sigmundsson, H. Geirsson, T. Arnadottir, V. Pinel (2006), Icelandic rhythmics: Annual modulation of land elevation and plate spreading by snow load, Geophys. Res. Lett., 33, L24305, doi:10.1029/2006GL028081 [pdf]

theses

• Volcano Deformation and Subdaily GPS Products, Dissertation, 2012 [pdf]
• CrusDe: A plug-in based simulation framework for composable CRUStal DEformation simulations using Green's functions, Diploma Thesis (Master's equiv.), 2007 [pdf]
• Estimation of traffic induced pollutant immission using video based traffic surveillance Undergraduate Thesis (German), 2005 [pdf]

reports

• Grapenthin, R., and F. Sigmundsson, Green's Functions and Crustal Deformation - Manual and Examples - Institute of Earth Sciences, University of Iceland, Nordic Volcanological Center, Report 0602, 30 pp., 2006 [pdf]