volcanoes, earthquakes
and the hydrosphere through geodesy


submitted / in press

peer reviewed articles

  1. Gochenour, J., S. Bilek, H.B. Woo, A. Luhmann, R. Grapenthin, J. Martin, Ambient Seismic Noise Tomography within the Floridan Aquifer System, Santa Fe River-Sink Rise, Florida, U. S., JGR-ES, vol 129(5), e2023JB027644 doi:10.1029/2023JB027644 [pdf].
  2. Angarita, M., R. Grapenthin, S. Henderson, M. Christoffersen, K. Anderson, Versatile Modeling Of Deformation (VMOD) Inversion Framework: Application to 20 years of observations at Westdahl Volcano and Fisher Caldera, Alaska, US, Geochem., Geophys., Geosys. (G3), vol 25(4), e2023GC011341, doi:10.1029/2023GC011341 [pdf].
  3. Parks, M.M., F. Sigmundsson, V. Drouin, S. Hreinsdóttir, A. Hooper, Y. Yang, B.G. Ófeigsson, E. Sturkell, Á.R. Hjartadóttir, R. Grapenthin, H. Geirsson, E. Trasatti, S. Barsotti, R. Pedersen, P. Einarsson, B.A. Óladóttir, H.M. Friðriksdóttir, 2021-2023 unrest and geodetic observations at Askja Volcano, Iceland, GRL, vol 51(4), e2023GL106730, doi:10.1029/2023GL106730 [pdf].
  4. Cheng, Y., R. Grapenthin (2024), The Alaska Makushin Volcano 2016-2018 inflation and its potential relation to the 2020 earthquake swarm, from GNSS observations (2024), JVGR, vol 446, 108010, doi:10.1016/j.jvolgeores.2024.108010 [pdf | video summary].
  5. Crozier, J., L. Karlstrom, E. Montgomery-Brown, M. Angarita, V. Cayol, M.-G. Bato, T.A. Wang, R. Grapenthin, T. Shreve, K.R. Anderson, A. Astort, O. Bodart, F. Cannavó, G. Currenti, F. Dabaghi, B. Erickson, D. Garg, M. Head, A. Iozzia, Y. C. Kim, H. Le Mével, C. Novoa Lizama, C. Rocker, F. Silverii, E. Trasatti, Y. Zhan (2023), Understanding the drivers of volcano deformation through geodetic model verification and validation, Bull. Volc., vol 85(74), doi:10.1007/s00445-023-01687-4 [pdf].
  6. Block, G.A., M. Roy, E. Graves, R. Grapenthin (2023), Pressurizing Magma Within Heterogeneous Crust: A Case Study at the Socorro Magma Body, New Mexico, USA, GRL, vol 50(20), e2023GL105689, doi: 10.1029/2023GL105689 [pdf].
  7. Graves, E., A. Rinehart, R. Grapenthin, M. Angarita, J. Grigg (2023), Leaky injection wells as threats and opportunities: InSAR analysis of an injection well in New Mexico's Vacuum wellfield, Scientific Reports, 13, 17308, doi: 10.1038/s41598-023-42696-9 [pdf].
  8. Koymans, M. R., E. de Zeeuw-van Dalfsen, J. Sepúlveda, L.G. Evers, J.M. Giniaux, R. Grapenthin, A. Hooper, B.G. Ofeigsson, F. Sigmundsson, Y. Yang (2023), Decades of Subsidence Followed By Rapid Uplift: Insights from Microgravity Data at Askja Volcano, Iceland, JVGR, vol 442, 107890, doi:10.1016/j.jvolgeores.2023.107890 [pdf].
  9. Woo, H.B, S. Bilek, J.A. Gochenour, R. Grapenthin, A.J. Luhmann, J.B. Martin (2023), Processing Ambient Noise Data Using Phase Cross-Correlation and Application Towards Understanding Spatiotemporal Environmental Effects, JGR-ES, vol 128(7), e2023JF007091, doi:10.1029/2023JF007091 [pdf].
  10. Bilek, S.L., A.J. Luhmann, R. Grapenthin, H.B. Woo, J.A. Gochenour (2023), Capturing Seismic Signals from Karst Aquifer Injection Experiments and a Natural Recharge Event, JGR, vol 126(4), e2022JB025635, doi:10.1029/2022JB025635 [pdf].
  11. Parameswaran, R., R. Grapenthin, M.E. West, A. Fozkos (2023), Interchangeable use of GNSS and seismic data for rapid earthquake characterization: 2021 Chignik earthquake, Alaska, SRL, doi:10.1785/0220220357 [pdf | video summary].
  12. Grapenthin, R., P. Kyle, R.C. Aster, M. Angarita, T. Wilson, J. Chaput (2022), Deformation at the open-vent Erebus volcano, Antarctica, from more than 20 years of GNSS Observations, JVGR, vol 432, 107703, doi:10.1016/j.jvolgeores.2022.107703.
  13. Kasatkina, E., I. Koulakov, R. Grapenthin, P. Izbekov, J. Larsen, N. Al-Arifi, S. Qasyi (2022), Multiple magma sources beneath the Okmok caldera as inferred from local earthquake tomography, JGR, e2022JB024656, doi: 10.1029/2022JB024656.
  14. Grapenthin, R., Y. Cheng, M. Angarita, D. Tan, F.J. Meyer, D. Fee, A. Wech (2022), Return from Dormancy: Rapid inflation and seismic unrest driven by transcrustal magma transfer at Mt. Edgecumbe (L'úx Shaa) Volcano, Alaska, GRL, e2022GL099464, doi:10.1029/2022GL099464.
  15. Angarita, M., R. Grapenthin, S. Plank, F. Meyer, H. Dietterich (2022), Quantifying large-scale surface change using SAR amplitude images: Crater morphology changes during the 2019-2020 Shishaldin Volcano eruption, JGR, 127, e2022JB024344, doi:10.1029/2022JB024344 [pdf | video summary].
  16. Li, S., R. Grapenthin, F. Sigmundsson, V. Drouin, S. Hreinsdottir, B. Ofeigsson (2022), Post-rifting relaxation during 2015-2020 following the Bardarbunga-Holuhraun dike intrusion and eruption in Iceland GRL, vol 49 (13), e2022GL098977, doi:10.1029/2022GL098977 [pdf].
  17. Elliott, J., R. Grapenthin, R. Parameswaran, Z. Xiao, J.T. Freymueller, L. Fusso (2022), Cascading Rupture of a Megathrust, Science Advances, vol 8 (18), abm4131, doi:10.1126/sciadv.abm4131 [pdf].
  18. Xiao, Z., J.T.Freymueller, R. Grapenthin, J. Elliott, C. Drooff, L. Fusso (2021), The Deep Shumagin Gap Filled: Kinematic Rupture Model and Slip Budget Analysis of the 2020 Mw 7.8 Simeonof Earthquake Constrained by GNSS, Global Seismic Waveforms, and Floating InSAR, EPSL, vol. 576, 117241, doi:10.1016/j.epsl.2021.117241 [pdf].
  19. Li, S., F. Sigmundsson, V. Drouin, B. Ofeigsson, M. Parks, K. Jonsdottir, R. Grapenthin, H. Geirsson, A. Hooper (2021), Ground deformation after a caldera collapse: Contributions of magma inflow and viscoelastic response to the 2015-2018 deformation field around Bardarbunga, Iceland, JGR, vol 126, doi:10.1029/2020JB020157, [pdf]
  20. 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]
  22. 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]
  23. 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
  24. 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]
  25. Murray, J.R., B.W. Crowell, R. Grapenthin, K. Hodgkinson, 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].
  26. 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].
  27. 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].
  28. 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].
  29. 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].
  30. 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].
  31. 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]
  32. 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]
  33. 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]
  34. 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]
  35. 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]
  36. 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]
  37. 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]
  38. 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]
  39. 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]
  40. 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]
  41. 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]



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