Articles | Volume 13, issue 11
https://doi.org/10.5194/tc-13-3117-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-13-3117-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
26 Nov 2019
Research article |
| 26 Nov 2019
Contribution of calving to frontal ablation quantified from seismic and hydroacoustic observations calibrated with lidar volume measurements
NORSAR, 2007 Kjeller, Norway
Department of Geosciences, University of Oslo, Post Box 1047, 0316 Oslo, Norway
Michał Pętlicki
Centro de Estudios Científicos, Valdivia, Chile
Pierre-Marie Lefeuvre
Department of Geosciences, University of Oslo, Post Box 1047, 0316 Oslo, Norway
Giuseppa Buscaino
CNR, Anthropic Impacts & Sustainable Marine Environment Institute, Capo Granitola, Torretta Granitola, Italy
Christopher Nuth
Department of Geosciences, University of Oslo, Post Box 1047, 0316 Oslo, Norway
Christian Weidle
Institute of Geosciences, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
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Felicity Alice Holmes, Eef van Dongen, Riko Noormets, Michał Pętlicki, and Nina Kirchner
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Glaciers which end in bodies of water can lose mass through melting below the waterline, as well as by the breaking off of icebergs. We use a numerical model to simulate the breaking off of icebergs at Kronebreen, a glacier in Svalbard, and find that both melting below the waterline and tides are important for iceberg production. In addition, we compare the modelled glacier front to observations and show that melting below the waterline can lead to undercuts of up to around 25 m.
Rowan Romeyn, Alfred Hanssen, and Andreas Köhler
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Related subject area
Discipline: Glaciers | Subject: Glaciers
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Extreme precipitation events in summer 2019 led to catastrophic loss of cave and surface ice in SE Europe at levels unprecedented during the last century. The projected continuous warming and increase in precipitation extremes could pose an additional threat to glaciers in southern Europe, resulting in a potentially ice-free SE Europe by the middle of the next decade (2035 CE).
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Morgan E. Monz, Peter J. Hudleston, David J. Prior, Zachary Michels, Sheng Fan, Marianne Negrini, Pat J. Langhorne, and Chao Qi
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We present full crystallographic orientations of warm, coarse-grained ice deformed in a shear setting, enabling better characterization of how crystals in glacial ice preferentially align as ice flows. A commonly noted c-axis pattern, with several favored orientations, may result from bias due to overcounting large crystals with complex 3D shapes. A new sample preparation method effectively increases the sample size and reduces bias, resulting in a simpler pattern consistent with the ice flow.
Akiko Sakai
The Cryosphere, 13, 2043–2049, https://doi.org/10.5194/tc-13-2043-2019, https://doi.org/10.5194/tc-13-2043-2019, 2019
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The Glacier Area Mapping for Discharge from the Asian Mountains (GAMDAM) glacier inventory was updated to revise the underestimated glacier area in the first version. The total number and area of glaciers are 134 770 and 100 693 ± 11 790 km2 from 453 Landsat images, which were carefully selected for the period from 1990 to 2010, to avoid mountain shadow, cloud cover, and seasonal snow cover.
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The Cryosphere, 12, 3439–3457, https://doi.org/10.5194/tc-12-3439-2018, https://doi.org/10.5194/tc-12-3439-2018, 2018
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On debris-covered glaciers, steep ice cliffs experience dramatically enhanced melt compared with the surrounding debris-covered ice. Using field measurements, UAV data and submetre satellite imagery, we estimate the cliff contribution to 2 years of ablation on a debris-covered tongue in Nepal, carefully taking into account ice dynamics. While they occupy only 7 to 8 % of the tongue surface, ice cliffs contributed to 23 to 24 % of the total tongue ablation.
Cited articles
Alstott, J., Bullmore, E., and Plenz, D.: powerlaw: a Python package for
analysis of heavy-tailed distributions, PLoS ONE, 9, e85777,
https://doi.org/10.1371/journal.pone.0085777, 2014. a
Amundson, J. M., Truffer, M., Lüthi, M. P., Fahnestock, M., West, M., and
Motyka, R. J.: Glacier, fjord, and seismic response to recent large calving
events, Jakobshavn Isbræ, Greenland, Geophys. Res. Lett., 35, L22501
https://doi.org/10.1029/2008GL035281,
2008. a
ASL (Albuquerque Seismological Laboratory)/USGS: Global Seismograph Network
(GSN – IRIS/USGS), https://doi.org/10.7914/sn/iu, 1988. a
Aster, R. and Winberry, J.: Glacial seismology, Rep. Prog. Phys.,
80, 39 pp., https://doi.org/10.1088/1361-6633/aa8473, 2017. a
Awrangjeb, M.: Using point cloud data to identify, trace, and regularize the
outlines of buildings, Int. J. Remote Sens., 37, 551–579,
https://doi.org/10.1080/01431161.2015.1131868, 2016. a
Bartholomaus, T. C., Larsen, C. F., and O'Neel, S.: Does calving matter?
Evidence for significant submarine melt, Earth Planet. Sci.
Lett., 380, 21–30, https://doi.org/10.1016/j.epsl.2013.08.014, 2013. a, b
Beyreuther, M., Barsch, R., Krischer, L., Megies, T., Behr, Y., and Wassermann,
J.: ObsPy: A Python toolbox for seismology, Seismol. Res. Lett.,
81, 530–533, https://doi.org/10.1785/gssrl.81.3.530, 2010. a
Chapuis, A. and Tetzlaff, T.: The variability of tidewater-glacier calving:
origin of event-size and interval distributions, J. Glaciol., 60,
622–634, https://doi.org/10.3189/2014JoG13J215, 2014. a, b
Chapuis, A., Rolstad, C., and Norland, R.: Interpretation of amplitude data
from a ground-based radar in combination with terrestrial photogrammetry and
visual observations for calving monitoring of Kronebreen, Svalbard, Ann.
Glaciol., 51, 34–40, https://doi.org/10.3189/172756410791392781, 2010. a, b, c
Chen, X., Shearer, P., Walter, F., and Fricker, H.: Seventeen Antarctic seismic
events detected by global surface waves and a possible link to calving events
from satellite images, J. Geophys. Res.-Sol. Ea., 116, B06311,
https://doi.org/10.1029/2011JB008262, 2011. a
Deschamps-Berger, C., Nuth, C., Van Pelt, W., Berthier, E., Kohler, J., and
Altena, B.: Closing the mass budget of a tidewater glacier: the example of
Kronebreen, Svalbard, J. Glaciol., 65, 136–148,
https://doi.org/10.1017/jog.2018.98, 2019. a, b
Ekström, G., Nettles, M., and Abers, G. A.: Glacial earthquakes, Science,
302, 622–624, https://doi.org/10.1126/science.1088057, 2003. a
Gardner, A. S., Moholdt, G., Cogley, J. G., Wouters, B., Arendt, A. A., Wahr,
J., Berthier, E., Hock, R., Pfeffer, W. T., Kaser, G., Ligtenberg, S. R. M.,
Bolch, T., Sharp, M. J., Hagen, J. O., van den Broeke, M. R., and Paul, F.: A
reconciled estimate of glacier contributions to sea level rise: 2003 to 2009,
Science, 340, 852–857, https://doi.org/10.1126/science.1234532, 2013. a
Glowacki, O., Deane, G., Moskalik, M., Blondel, P., Tegowski, J., and
Blaszczyk, M.: Underwater acoustic signatures of glacier calving, Geophys.
Res. Lett., 42, 804–812, https://doi.org/10.1002/2014GL062859,
2015. a, b, c
Holmes, F. A., Kirchner, N., Kuttenkeuler, J., Krützfeldt, J., and
Noormets, R.: Relating ocean temperatures to frontal ablation rates at
Svalbard tidewater glaciers: Insights from glacier proximal datasets,
Sci. Rep., 9, 9442, https://doi.org/10.1038/s41598-019-45077-3, 2019. a, b
How, P., Schild, K. M., Benn, D. I., Noormets, R., Kirchner, N., Luckman, A.,
Vallot, D., Hulton, N. R., and Borstad, C.: Calving controlled by
melt-under-cutting: detailed calving styles revealed through time-lapse
observations, Ann. Glaciol., 60, 20–31,
https://doi.org/10.1017/aog.2018.28, 2019. a, b, c, d, e, f
Huss, M. and Hock, R.: A new model for global glacier change and sea-level
rise, Front. Earth Sci., 3, 54, https://doi.org/10.3389/feart.2015.00054, 2015. a
Köhler, A., Nuth, C., Schweitzer, J., Weidle, C., and Gibbons, S. J.:
Regional passive seismic monitoring reveals dynamic glacier activity on
Spitsbergen, Svalbard, Polar Res., 34, 26178,
https://doi.org/10.3402/polar.v34.26178, 2015. a, b, c
Köhler, A., Nuth, C., Kohler, J., Berthier, E., Weidle, C., and Schweitzer,
J.: A 15 year record of frontal glacier ablation rates estimated from seismic
data, Geophys. Res. Lett., 43, 12155–12164,
https://doi.org/10.1002/2016GL070589, 2016. a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t
Köhler, A., Weidle, C., and Nuth, C.: Glacier dynamic ice loss quantified
through seismic eyes (CALVINGSEIS) – Dataset, GFZ Data Services,
https://doi.org/10.5880/GIPP.201604.1, 2019. a, b, c
Lague, D., Brodu, N., and Leroux, J.: Accurate 3D comparison of complex
topography with terrestrial laser scanner: Application to the Rangitikei
canyon (NZ), ISPRS J. Photogramm., 82, 10–26,
https://doi.org/10.1016/j.isprsjprs.2013.04.009, 2013. a, b
Lindbäck, K., Kohler, J., Pettersson, R., Nuth, C., Langley, K., Messerli, A., Vallot, D., Matsuoka, K., and Brandt, O.: Subglacial topography, ice thickness, and bathymetry of Kongsfjorden, northwestern Svalbard, Earth Syst. Sci. Data, 10, 1769–1781, https://doi.org/10.5194/essd-10-1769-2018, 2018. a
Mallalieu, J., Carrivick, J. L., Quincey, D. J., Smith, M. W., and James,
W. H.: An integrated Structure-from-Motion and time-lapse technique for
quantifying ice-margin dynamics, J. Glaciol., 63, 937–949,
https://doi.org/10.1017/jog.2017.48, 2017. a
Mercenier, R., Lüthi, M., and Vieli, A.: A transient coupled ice
flow-damage model to simulate iceberg calving from tidewater outlet glaciers,
J. Adv. Model. Earth Sy., 11, 3057–3072, https://doi.org/10.1029/2018MS001567,
2019. a
Minowa, M., Podolskiy, E. A., Jouvet, G., Weidmann, Y., Sakakibara, D.,
Tsutaki, S., Genco, R., and Sugiyama, S.: Calving flux estimation from
tsunami waves, Earth Planet. Sc. Lett., 515, 283–290,
https://doi.org/10.1016/j.epsl.2019.03.023, 2019. a, b, c, d
Murray, T., Selmes, N., James, T. D., Edwards, S., Martin, I., O'Farrell, T.,
Aspey, R., Rutt, I., Nettles, M., and Baugé, T.: Dynamics of glacier
calving at the ungrounded margin of Helheim Glacier, southeast Greenland,
J. Geophys. Res.-Earth, 120, 964–982,
https://doi.org/10.1002/2015JF003531, 2015. a, b
Nuth, C., Schuler, T. V., Kohler, J., Altena, B., and Hagen, J. O.: Estimating
the long-term calving flux of Kronebreen, Svalbard, from geodetic elevation
changes and mass-balance modelling, J. Glaciol., 58, 119–133,
https://doi.org/10.3189/2012JoG11J036, 2012. a
O'Neel, S., Echelmeyer, K. A., and Motyka, R. J.: Short-term variations in
calving of a tidewater glacier: LeConte Glacier, Alaska, U.S.A., J.
Glaciol., 49, 587–598, https://doi.org/10.3189/172756503781830430, 2003. a
O'Neel, S., Marshall, H. P., McNamara, D. E., and Pfeffer, W. T.: Seismic
detection and analysis of icequakes at Columbia Glacier, Alaska, J.
Geophys. Res., 112, F03S23, https://doi.org/10.1029/2006JF000595, 2007. a
O'Neel, S., Larsen, C., Rupert, N., and Hansen, R.: Iceberg calving as a
primary source of regional-scale glacier-generated seismicity in the St.
Elias Mountains, J. Geophys. Res., 115, f04034,
https://doi.org/10.1029/2009JF001598, 2010. a
Pettit, E. C., Lee, K. M., Brann, J. P., Nystuen, J. A., Wilson, P. S., and
O'Neel, S.: Unusually loud ambient noise in tidewater glacier fjords: A
signal of ice melt, Geophys. Res. Lett., 42, 2309–2316,
https://doi.org/10.1002/2014GL062950, 2015. a
Podgórski, J., Pętlicki, M., and Kinnard, C.: Revealing recent
calving activity of a tidewater glacier with terrestrial LiDAR reflection
intensity, Cold Reg. Sci. Technol., 151, 288–301,
https://doi.org/10.1016/j.coldregions.2018.03.003, 2018. a
Podolskiy, E. A. and Walter, F.: Cryoseismology, Rev. Geophys., 54,
708–758, https://doi.org/10.1002/2016RG000526, 2016. a
Qamar, A.: Calving icebergs: A source of low-frequency seismic signals from
Columbia Glacier, Alaska, J. Geophys. Res., 93, 6615–6623,
https://doi.org/10.1029/JB093iB06p06615, 1988. a
Schellenberger, T., Dunse, T., Kääb, A., Kohler, J., and Reijmer, C. H.: Surface speed and frontal ablation of Kronebreen and Kongsbreen, NW Svalbard, from SAR offset tracking, The Cryosphere, 9, 2339–2355, https://doi.org/10.5194/tc-9-2339-2015, 2015. a, b, c, d
Schild, K., Renshaw, C., Benn, D., Luckman, A., Hawley, R., How, P., Trusel,
L., Cottier, F., Pramanik, A., and Hulton, N.: Glacier calving rates due to
subglacial discharge, fjord circulation, and free convection, J.
Geophys. Res.-Earth, 123, 2189–2204,
https://doi.org/10.1029/2017JF004520, 2018. a
Schweitzer, J., Fyen, J., Mykkeltveit, S., Gibbons, S., Pirli, M., Kühn,
D., and Kværna, T.: Seismic Arrays, in: New Manual
of Seismological Observatory Practice (NMSOP-2), edited by: Bormann, P., 2nd (revised) Edn.,
Potsdam: Deutsches GeoForschungsZentrum GFZ, 1–80, available at:
http://ebooks.gfz-potsdam.de/pubman/item/escidoc:43213:7 (last access: 21 November 2019), 2012. a
Seabold, S. and Perktold, J.: Statsmodels: Econometric and statistical
modeling with python, in: Proceedings of the 9th Python in Science
Conference, 57–61, 2010. a
Sergeant, A., Mangeney, A., Yastrebov, V. A., Walter, F., Montagner, J.-P.,
Castelnau, O., Stutzmann, E., Bonnet, P., Ralaiarisoa, V. J.-L., Bevan, S.,
and Luckman, A.: Monitoring Greenland ice sheet buoyancy-driven calving
discharge using glacial earthquakes, Ann. Glaciol., 60, 75–95,
https://doi.org/10.1017/aog.2019.7, 2019. a, b, c
Tegowski, J., Deane, G., Blondel, P., Glowacki, O., and Moskalik, M.: An
acoustical study of gas bubbles escaping from melting growlers, in:
Proceedings of the 2nd International Conference and Exhibition on Underwater
Acoustics, 137–142, 2014. a
Torsvik, T., Albretsen, J., Sundfjord, A., Kohler, J., Sandvik, A. D.,
Skarðhamar, J., Lindbäck, K., and Everett, A.: Impact of tidewater
glacier retreat on the fjord system: Modeling present and future circulation
in Kongsfjorden, Svalbard, Estuar. Coast. Shelf S., 220,
152–165, https://doi.org/10.1016/j.ecss.2019.02.005, 2019. a
Urick, R.: The noise of melting icebergs, J. Acoust. Soc.
Am., 50, 337–341, https://doi.org/10.1121/1.1912637, 1971. a
Vallot, D., Åström, J., Zwinger, T., Pettersson, R., Everett, A., Benn, D. I., Luckman, A., van Pelt, W. J. J., Nick, F., and Kohler, J.: Effects of undercutting and sliding on calving: a global approach applied to Kronebreen, Svalbard, The Cryosphere, 12, 609–625, https://doi.org/10.5194/tc-12-609-2018, 2018. a, b, c, d
Vaughan, D., Comiso, J., Allison, I., Carrasco, J., Kaser, G., Kwok, R., Mote,
P., Murray, T., Paul, F., Ren, J., Rignot, E., Solomina, O., Steffen, K., and
Zhang, T.: Observations: Cryosphere, in: Climate Change 2013: The Physical
Science Basis. Contribution of Working Group I to the Fifth Assessment Report
of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G. K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press Cambridge, United Kingdom and
New York, NY, USA, 2013. a
Walter, A., Lüthi, M. P., and Vieli, A.: Calving event size measurements and statistics of Eqip Sermia, Greenland, from terrestrial radar interferometry, The Cryosphere Discuss., https://doi.org/10.5194/tc-2019-102, in review, 2019. a, b, c
Walter, F., Amundson, J. M., O'Neel, S., Truffer, M., Fahnestock, M., and
Fricker, H. A.: 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, 2012. a
Wessel, P. and Smith, W. H. F.: New, improved version of GMT released, Eos,
Transactions, American Geophysical Union, 79, 579–579,
https://doi.org/10.1029/98EO00426, 1998. a
Withers, M., Aster, R., Young, C., Beiriger, J., Harris, M., Moore, S., and
Trujillo, J.: A comparison of select trigger algorithms for automated global
seismic phase and event detection, B. Seismol. Soc.
A., 88, 95–106, 1998. a
Short summary
Ice loss at the front of glaciers can be observed with high temporal resolution using seismometers. We combine seismic and underwater sound measurements of iceberg calving at Kronebreen, a glacier in Svalbard, with laser scanning of the glacier front. We develop a method to determine calving ice loss directly from seismic and underwater calving signals. This allowed us to quantify the contribution of calving to the total ice loss at the glacier front, which also includes underwater melting.
Ice loss at the front of glaciers can be observed with high temporal resolution using...
