Huw Horgan

Selection of publications


Muto, A., Anandakrishnan, S., Alley, R.B., Horgan, H.J., Parizek, B.R., Koellner, S., Christianson, K., and Holschuh, N. (2019). Relating bed character and subglacial morphology using seismic data from Thwaites Glacier, West Antarctica. Earth and Planetary Science Letters 507: 199-206. doi:10.1016/j.epsl.2018.12.008

Taylor-Offord, S., Horgan, H., Townend, J., and Winberry, J.P. (2019). Seismic observations of crevasse growth following rain-induced glacier acceleration, Haupapa/Tasman Glacier, New Zealand. Annals of Glaciology 60(79): 14-22. doi:10.1017/aog.2019.20


Horgan, H. J., Hulbe, C., Alley, R. B., Anandakrishnan, S., Goodsell, B., Taylor-Offord, S., and Vaughan, M. J. (2017). Poststagnation retreat of Kamb Ice Stream’s grounding zone. Geophysical Research Letters44. doi:10.1002/2017GL074986


Christianson, K., Jacobel, R.W., Horgan, H.J., Alley, R.B., Anandakrishnan, S., Holland, D.M., and DallaSanta, K.J. (2016). Basal conditions at the grounding zone of Whillans Ice Stream, West Antarctica, from ice-penetrating radar. Journal of Geophysical Research Earth Surfaces, 121: 1954-1983. doi:10.1002/2015JF003806

Cullen, N.J., Anderson, B., Sirguey, P., Stumm, D., Mackintosh, A., Conway, J.P., Horgan, H.J., Dadic, R., Fitzsimons, S.J., and Lorrey, A. (2016). An 11-year record of mass balance of Brewster Glacier, New Zealand, determined using a geostatistical approach. Journal of Glaciology. doi:10.1017/jog.2016.128

Hodson, T.O., Powell, R.D., Brachfeld, S.A., Tulaczyk, S., Scherer, R.P., and the WISSARD Science Team (incl Horgan, H.J.) (2016). Physical processes in Subglacial Lake Whillans, West Antarctica: Inferences from sediment cores. Earth and Planetary Science Letters, 444: 56-63. doi:10.1016/j.epsl.2016.03.036


Alley, R. B., Anandakrishnan, S., Christianson, K., Horgan, H. J., Muto, A., Parizek, B. R., Pollard, D., and Walker, R. T. (2015). Ocean forcing of ice-sheet retreat: West Antarctica and more. Annual Review of Earth and Planetary Sciences 201(43): 7.1-7.25.

Fisher, A.T., Mankoff, K.D., Tulaczyk, S.M., Tyler, S.W., Foley, N. and the WISSARD Science Team (including Horgan, H.) (2015). High geothermal heat flux measured below the West Antarctic Ice Sheet. Science Advances 1(6): e1500093. doi: 10.1126/sciadv.1500093

Horgan, H.J., Anderson, B., Alley, R.B., Chamberlain, C.J., Dykes, R., Kehrl, L.M., Townend, J. (2015). Glacier velocity variability due to rain-induced sliding and cavity formation. Earth and Planetary Science Letters 432: 273-282. doi:10.1016/j.epsl.2015.10.016

Kehrl, L.M., Horgan, H.J., Anderson, B.M., Dadic, R., Mackintosh, A.N. (2015). Glacier velocity and water input variability in a maritime environment: Franz Josef Glacier, New Zealand. Journal of Glaciology 61(228): 663-674.

Picotti, S., Vuan, A., Carcione, J.M., Horgan, H.J., Anandakrishnan, S. (2015). Anisotropy and crystalline fabric of Whillans Ice Stream (West Antarctica) inferred from multicomponent seismic data. Journal of Geophysical Research: Solid Earth 120: 4237-4262. doi:10.1002/2014JB011591


Christner, B.C., Priscu, J.C., Achberger, A. M., Barbante, C., Carter, S.P., Christianson, K., Michaud, A.B., Mikucki, J.A., Mitchell, A.C., Skidmore, M.L., Vick-Majors, T.J., and the WISSARD Science Team (including Horgan, H.) (2014). A microbial ecosystem beneath the West Antarctic Ice Sheet. Nature 512: 310-313.

Tulaczyk, S., Mikucki, J.A., Siegfried, M.R., Priscu, J.C., Barcheck, C.G., Beem, L.H., Beha, A., Burnett, J., Christner, B.C., Fisher, A.T., Fricker, H.A., Mankoff, K.D., Powell, R.D., Rack, F., Sampson, D., Scherer, R.P., Schwartz, S.Y. and the WISSARD Science Team (including Horgan) (2014). WISSARD at Subglacial Lake Whillans: Scientific Operations and Initial Observations. Annals of Glaciology 55: 51-58.


Horgan, H.J., Alley, R.B., Christianson, K., Jacobel, R.W., Anandakrishnan, S., Muto, A., Beem, L.H., Siegfried, M.R. (2013). Estuaries beneath ice sheets. Geology 41(11): 1159-1162.

Christianson, K., Parizek, B.R., Alley, R.B., Horgan, H.J., Jacobel, R.W., Anandakrishnan, S., Keisling, B.A., Craig, B.D., Muto, A. (2013). Ice sheet grounding zone stabilization due to till compaction. Geophysical Research Letters 40(20): 5406-5411.

Muto, A., Christianson, K., Horgan, H.J., Anandakrishnan, S., Alley, R.B. (2013). Bathymetry and geological structures beneath the Ross Ice Shelf at the mouth of Whillans Ice Stream, West Antarctica, modelled from ground-based gravity measurements. Journal of Geophysical Research B: Solid Earth 118(8): 4535-4536.

Horgan, H.J., Christianson, K., Jacobel, R.W., Anandakrishnan, S., Alley, R.B. (2013). Sediment deposition at the modern grounding zone of Whillans Ice Stream, West Antarctica. Geophysical Research Letters 40(15): 3934-3939.


Horgan, H. J., Anandakrishnan, S., Jacobel, R. W., Christianson, K., Alley, R. B. Heeszel, D. S., Picotti, S., Walter, J. I. (2012). Subglacial Lake Whillans: Seismic observations of a shallow active reservoir beneath a West Antarctic ice stream. Earth and Planetary Science Letters 331-332: 201-209. doi:10.1016/j.epsl.2012.02.023

Christianson, K., Jacobel, R. W., Horgan, H. J., Anandakrishnan, S., Alley, R. B. (2012). Subglacial Lake Whillans: Ice-penetrating radar and GPS observations of a shallow active reservoir beneath a West Antarctic ice stream. Earth and Planetary Science Letters 331-332: 237-224. doi:10.1016/j.epsl.2012.03.013


Fricker, H.A., Powell, R., Priscu, J., Tulaczyk, S., Anandakrishnan, S., Christner, B., Fisher, A., Holland, D., Horgan, H.J., Jacobel, R., Mikucki, J., Mitchell, A., Scherer, R., Severinghaus, J. (2011). Siple Coast subglacial aquatic environments: The Whillans Ice Stream Subglacial Access Research Drilling Project. In Siegert, M.J., Kennicutt, M.C., and Bindschadler, R., (eds.), Antarctic Subglacial Aquatic Environments, Geophysical Monograph Series 192: 246 pp., AGU, Washington, D. C. doi:10.1029/GM192

Horgan, H.J., Anandakrishnan, S., Alley, R.B., Burkett, P.G., Peters, L.E. (2011). Englacial seismic reflectivity – imaging crystal orientation fabric in West Antarctica. Journal of Glaciology 57(204): 639-650.

Horgan, H.J., Walker, R.T., Anandakrishnan, S., Alley, R.B. (2011). Surface elevation changes at the front of the Ross Ice Shelf: Implications for basal melting. Journal of Geophysical Research 116: C02005. doi:10.1029/2010JC006192


Alley, R.B., Horgan, H.J., Joughin,I., Cuffey, K.M., Dupont, T.K., Parizek, B., Anandakrishnan, S., Bassis, J., (2008). A simple law for ice shelf calving. Science 322(5906): 1344.

Peters, L.E., Anandakrishnan, S., Holland, C.W., Horgan, H.J., Blankenship, D.D., Voigt, D.E., (2008). Seismic detection of a subglacial lake near the South Pole, Antarctica. Geophysical Research Letters 35: L23501. doi:10.1029/2008GL035704

Johnston, L., Wilson, G., Gorman, A., Henrys, S., Horgan, H.J., Clark, R., Naish, T.R., (2008). Cenozoic basin evolution beneath the southern McMurdo Ice Shelf, Antarctica, Global and Planetary Change 62: 61-76.

Horgan, H.J., Anandakrishnan, S., Alley, R.B., Peters, L.E., Tsoflias, G.P., Voigt, D.E., Winberry, J.P., (2008). Complex fabric development revealed by englacial seismic reflectivity: Jakobshavn Isbræ, Greenland. Geophysical Research Letters 35: L10501. doi:10.1029/2008GL033712

2005 - 2007

Anandakrishnan, S., Catania, G.A., Alley, R.B., Horgan, H.J., (2007). Discovery of Till Deposition at the grounding line of Whillans Ice Stream. Science 315(5820): 1835-1838.

Horgan, H.J. and Anandakrishnan, S., (2006). Static grounding lines and dynamic ice streams; evidence from the Siple Coast, West Antarctica. Geophysical Research Letters 33: L18502. doi:10.1029/2006GL027091

Joughin, I., Bindschadler, R.A., King, M.A., Voigt, D.E., Alley, R.B., Anandakrishnan, S., Horgan, H.J., Peters, L.E., Winberry, P., Das, S.B., Catania, G.A., (2005). Continued deceleration of Whillans Ice Stream, West Antarctica. Geophysical Research Letters 32: L22501. doi:10.1029/2005GL024319

Horgan, H.J., Naish, T., Bannister, S., Balfour, N., Wilson, G., (2005). Seismic stratigraphy of the Plio-Pleistocene Ross Island flexural moat-fill: A prognosis for ANDRILL Program drilling beneath McMurdo-Ross Ice Shelf. Global Planetary Change 45: 83-97.