Publications

Amundson, J.M., A.A. Robel, J.C. Burton, and K. Nissanka, in review. A quasi-one-dimensional ice mélange flow model based on continuum descriptions of granular materials, Cryosphere, https://doi.org/10.5194/egusphere-2024-297.

2023
Kaluzienski, L., J.M. Amundson, J.N. Womble, A.K. Bliss, and L.E. Pearson, 2023. Impacts of tidewater glacier advance on iceberg habitat, Ann. Glaciol., 64(90), 44-54, https://doi.org/10.1017/aog.2023.46.

Abib, N., D.A. Sutherland, J.M. Amundson, D. Duncan, E.F. Eidam, R.H. Jackson, C. Kienholz, M. Morlighem, R.J. Motyka, J.D. Nash, B. Ovall, and E.C. Pettit, 2023. Persistent overcut regions dominate the terminus morphology of a rapidly melting tidewater glacier, Ann. Glaciol., 64(90), 1-12, https://doi.org/10.1017/aog.2023.38.

Cusack, J.M., R.H. Jackson, J.D. Nash, E. Skyllingstad, E.C. Pettit, D.A. Sutherland, R.J. Motyka, and J.M. Amundson, 2023. Internal gravity waves generated by subglacial discharge: Implications for tidewater glacier melt, Geophys. Res. Lett., 50, e2022GL102426, https://doi.org/10.1029/2022GL102426.

2022
Jackson, R.H., R.J. Motyka, J.M. Amundson, N. Abib, D.A. Sutherland, J.D. Nash, and C. Kienholz, 2022. The relationship between submarine melt and subglacial discharge from observations at a tidewater glacier, J. Geophys. Res. Oceans, 127, e2021JC018204, https://doi.org/10.1029/2021JC018204.

Hager, A.O., D.A. Sutherland, J.M. Amundson, R.H. Jackson, C. Kienholz, R.J. Motyka, and J.D. Nash, 2022. Subglacial discharge reflux and buoyancy forcing drive seasonality in a silled glacial fjord, J. Geophys. Res. Oceans, 127, e2021JC018355, https://doi.org/10.1029/2021JC018355.

Amundson, J.M., M. Truffer, and T. Zwinger, 2022. Tidewater glacier response to individual calving events, J. Glaciol., 68(272), 1117-1126, https://doi.org/10.1017/jog.2022.26.

Labedz, C.R., T.C. Bartholomaus, J.M. Amundson, F. Gimbert, M.S. Karplus, V.C. Tsai, and S.A. Veitch, 2022. Seismic mapping of subglacial hydrology reveals previously undetected pressurization event, J. Geophys. Res. Earth Surf., 127, e2021JF006406, https://doi. org/10.1029/2021JF006406.

Jenson, A., J.M. Amundson, J. Kingslake, and E. Hood, 2022. Long-period variability in ice-dammed glacier outburst floods due to evolving catchment geometry, Cryosphere, 16, 333-347, https://doi.org/10.5194/tc-16-333-2022.

2021
Cassotto, R.K., J.C. Burton, J.M. Amundson, M.A. Fahnestock, and M. Truffer, 2021. Granular decoherence precedes ice mélange failure and glacier calving at Jakobshavn Isbræ, Nature Geosci., 14, 417-422, https://doi.org/10.1038/s41561-021-00754-9.

Veitch, S.A., M. Karplus, G. Kaip, L.F. Gonzalez, J.M. Amundson, and T.C. Bartholomaus, 2021. Ice thickness estimates of Lemon Creek Glacier, Alaska, from active-source seismic imaging, J. Glaciol., 67(265), 824-832, https://doi.org/10.1017/jog.2021.32.

McNeil, C., J.M. Amundson, S. O'Neel, R. J. Motyka, L. Sass, M. Truffer, J.M. Zechmann, and S. Campbell, 2021. The imminent calving retreat of Taku Glacier, Eos, 102, https://doi.org/10.1029/2021EO154856. [Not peer reviewed.]

Zechmann, J.M., M. Truffer, R.J. Motyka, J.M. Amundson, and C.F. Larsen, 2021. Sediment redistribution beneath the terminus of an advancing glacier, Taku Glacier (T'aakú Kwáan Sít'i), Alaska, J. Glaciol., 67(202), 204-218, https://doi.org/10.1017/jog.2020.101.

2020
Eidam, E.F., D.A. Sutherland, D. Duncan, C. Kienholz, J.M. Amundson, and R.J. Motyka, 2020. Morainal bank evolution and fjord infilling during a tidewater glacier stillstand, on seasonal to decadal timescales, J. Geophys. Res. Earth Surf., 125, e2019JF005359, https://doi.org/10.1029/2019JF005359.

Kienholz, C., J. Pierce, E. Hood, J.M. Amundson, G. Wolken, A. Jacobs, S. Hart, K. Wikstrom Jones, D. Abdel-Fattah, C. Johnson, and J. Conaway, 2020. Deglacierization of a marginal basin and implications for outburst floods, Mendenhall Glacier, Alaska, Front. Earth Sci., 8, 137, https://doi.org/10.3389/feart.2020.00137.

Amundson, J.M., C. Kienholz, A.O. Hager, R.H. Jackson, R.J. Motyka, J.D. Nash, and D.A. Sutherland, 2020. Formation, flow, and break-up of ephemeral ice mélange at LeConte Glacier and Bay, Alaska, J. Glaciol., 66(258), 577-590, https://doi.org/10.1017/jog.2020.29.

Jackson, R.H., J.D. Nash, C. Kienholz, D.A. Sutherland, J.M. Amundson, R.J. Motyka, D. Winters, E. Skyllingstad, and E.C. Pettit, 2020. Meltwater intrusions reveal mechanisms for rapid submarine melt at a tidewater glacier, Geophys. Res. Lett., 47, e2019GL085335, https://doi.org/10.1029/2019GL085335.

2019
Sutherland, D.A., R.H. Jackson, C. Kienholz, J.M. Amundson, W.P. Dryer, D. Duncan, E.F. Eidam, R.J. Motyka, and J.D. Nash, 2019. Direct observations of submarine melt and subsurface geometry at a tidewater glacier, Science, 365(6541), 369-374, https://doi.org/10.1126/science.aax3528.

Carnahan, E., J.M. Amundson, and E. Hood, 2019. Impact of glacier loss and vegetation succession on annual basin runoff, Hydrol. Earth Syst. Sci., 23, 1667-1681, https://doi.org/10.5194/hess-23-1667-2019.

Vore, M.E., T.C. Bartholomaus, J.P. Winberry, J.I. Walter, and J.M. Amundson, 2019. Seismic tremor reveals spatial organization and temporal changes of subglacial water system, J. Geophys. Res. Earth Surf., 124, 427-446, https://doi.org/10.1029/2018JF004819.

Kienholz, C., J.M. Amundson, R.J. Motyka, R.H. Jackson, J.B. Mickett, D.A. Sutherland, J.D. Nash, D.S. Winters, W.P. Dryer, and M. Truffer, 2019. Tracking icebergs with oblique time-lapse photography and sparse optical flow, LeConte Bay, Alaska, 2016-2017, J. Glaciol., 65(250), 195-211, https://doi.org/10.1017/jog.2018.105.

Cassotto, R., M. Fahnestock, J.M. Amundson, M. Truffer, M.S. Boettcher, S. de la Peña, and I. Howat, 2019. Nonlinear glacier response to calving events, Jakobshavn Isbræ, Greenland. J. Glaciol., 65(249), 39-54, https://doi.org/10.1017/jog.2018.90.

2018
Zechmann, J.M., A.D. Booth, M. Truffer, A. Gusmeroli, J.M. Amundson, and C.F. Larsen, 2018. Active seismic studies in valley glacier settings: Strategies and limitations. J. Glaciol., 64(247), 796-810, https://doi.org/10.1017/jog.2018.69.

Amundson, J.M. and J.C. Burton, 2018. Quasi-static granular flow of ice mélange. J. Geophys. Res. Earth Surf., 123, 2243-2257, https://doi.org/10.1029/2018JF004685.

Burton, J.C., J.M. Amundson, R. Cassotto, C.-C. Kuo, and M. Dennin, 2018. Quantifying flow and stress in ice mélange, the world's largest granular material. Proc. Nat. Acad. Sci., 115(20), 5105-5110, https://doi.org/10.1073/pnas.1715136115.

Amundson, J.M. and D. Carroll, 2018. Effect of topography on subglacial discharge and submarine melting during tidewater glacier retreat. J. Geophys. Res. Earth Surf., 123, 66-79, https://doi.org/10.1002/2017JF004376.

2016
Brunt, K.M., T.A. Neumann, J.M. Amundson, J.L. Kavanaugh, M.S. Moussavi, K.M. Walsh, W.B. Cook, and T. Markus, 2016. MABEL photon-counting laser altimetry data in Alaska for ICESat-2 simulations and development. Cryosphere, 10, 1707-1719, https://doi.org/10.5194/tc-10-1707-2016.

Gimbert, F., V.C. Tsai, J.M. Amundson, T.C. Bartholomaus, and J.I. Walter, 2016. Subseasonal changes observed in subglacial channel pressure, size, and sediment transport. Geophys. Res. Lett., 43, https://doi.org/10.1002/2016GL068337.

Amundson, J.M., 2016. A mass-flux perspective of the tidewater glacier cycle. J. Glaciol., 62(231), 82-93, https://doi.org/10.1017/jog.2016.14.

2015
Bartholomaus, T.C., J.M. Amundson, J.I. Walter, S. O'Neel, M.E. West, and C.F. Larsen, 2015. Subglacial discharge at tidewater glaciers revealed by seismic tremor. Geophys. Res. Lett., 42, https://doi.org/10.1002/2015GL064590.

Peters, I.R., J.M. Amundson, R. Cassotto, M. Fahnestock, K.N. Darnell, M. Truffer, and W.W. Zhang, 2015. Dynamic jamming of iceberg-choked fjords. Geophys. Res. Lett., 42, https://doi.org/10.1002/2014GL062715.

Cassotto, R., M. Fahnestock, J.M. Amundson, M. Truffer, and I. Joughin, 2015. Seasonal and interannual variations in ice melange and its impact on terminus stability, Jakobshavn Isbræ, Greenland. J. Glaciol., 61(225), 76-88, https://doi.org/10.3189/2015JoG13J235.

2013
Motyka, R.J., W.P. Dryer, J. Amundson, M. Truffer, and M. Fahnestock, 2013. Rapid submarine melting driven by subglacial discharge, LeConte Glacier, Alaska. Geophys. Res. Lett., 40, https://doi.org/10.1002/grl.51011.

Darnell, K.N., J.M. Amundson, L.M. Cathles, and D.R. MacAyeal, 2013. The morphology of supraglacial lake ogives. J. Glac., 59(215), 533-544, https://doi.org/10.3189/2013JoG12J098.

2012
Podrasky, D., M. Truffer, M. Fahnestock, J.M. Amundson, R. Cassotto, and I. Joughin, 2012. Outlet glacier response to forcing over hourly to interannual timescales, Jakobshavn Isbræ, Greenland. J. Glac., 58(212), 1212-1226, https://doi.org/10.3189/2012JoG12J065.

Walter, F., J.M. Amundson, S. O'Neel, M. Truffer, M. Fahnestock, and H.A. Fricker, 2012. Analysis of low-frequency seismic signals generated during a multiple-iceberg calving event at Jakobshavn Isbræ, Greenland. J. Geophys. Res., 117(F01036), https://doi.org/10.1029/2011JF002132.

Amundson, J.M., J.F. Clinton, M. Fahnestock, M. Truffer, M.P. Lüthi, and R.J. Motyka, 2012. Observing calving-generated ocean waves with coastal broadband seismometers, Jakobshavn Isbræ, Greenland. Ann. Glaciol., 53(60), 79-85, https://doi.org/10.3189/2012/AoG60A200.

Amundson, J.M., J.C. Burton, and S. Correa-Legisos, 2012. Impact of hydrodynamics on seismic signals generated by iceberg collisions. Ann. Glaciol., 53(60), 106-112, https://doi.org/10.3189/2012/AoG60A012.

MacAyeal, D.R., J. Freed-Brown, W.W. Zhang, and J.M. Amundson, 2012. The influence of ice mélange on fjord seiches. Ann. Glaciol., 53(60), 45-49, https://doi.org/10.3189/2012/AoG60A027.

Freed-Brown, J., J.M. Amundson, D.R. MacAyeal, and W.W. Zhang, 2012. Blocking a wave: Frequency band gaps in ice shelves with periodic crevasses. Ann. Glaciol., 53(60), 85-89, https://doi.org/10.3189/2012AoG60A120.

Burton, J.C., J.M. Amundson, D.S. Abbot, A. Boghosian, L.M. Cathles, S. Correa-Legisos, K.N. Darnell, N. Guttenberg, D.M. Holland, and D.R. MacAyeal, 2012. Laboratory investigations of iceberg-capsize dynamics, energy dissipation, and tsunamigenesis. J. Geophys. Res., 117(F01007), https://doi.org/10.1029/2011JF002055.

2011
Guttenberg, N., D.S. Abbot, J.M. Amundson, J.C. Burton, L. Mac Cathles, D.R. MacAyeal, and W.W. Zhang, 2011. A computational investigation of iceberg capsize as a driver of explosive ice-shelf disintegration. Ann. Glaciol., 52(59), 51-59, https://doi.org/10.3189/172756411799096178.

2010
Amundson, J.M. and M. Truffer, 2010. A unifying framework for iceberg calving models. J. Glaciol., 56(199), 822-830, https://doi.org/10.3189/002214310794457173.

Amundson, J.M, M. Fahnestock, M. Truffer, J. Brown, M.P. Lüthi, and R.J. Motyka, 2010. Ice mélange dynamics and implications for terminus stability, Jakobshavn Isbræ, Greenland. J. Geophys. Res., 115(F01005), https://doi.org/10.1029/2009JF001405.

2008
Amundson, J.M, M. Truffer, M.P. Lüthi, M. Fahnestock, M. West, and R.J. Motyka, 2008. Glacier, fjord, and seismic response to recent large calving events, Jakobshavn Isbræ, Greenland. Geophys. Res. Lett., 35(L22501), https://doi.org/10.1029/2008GL035281.

2006
Amundson, J.M., M. Truffer, and M.P. Lüthi, 2006. Time-dependent basal stress conditions beneath Black Rapids Glacier, Alaska, inferred from measurements of ice deformation and surface motion. J. Glaciol., 52(178), 347-357, https://doi.org/10.3189/172756506781828593.

Amundson, J.M., and N.R. Iverson, 2006. Testing a glacial erosion rule using hang heights of hanging valleys, Jasper National Park, Alberta, Canada. J. Geophys. Res., 111(F01020), https://doi.org/10.1029/2005JF000359.