Skip to main content
×
×
Home

Evaluation of existing and new methods of tracking glacier terminus change

  • James M. Lea (a1), Douglas W.F. Mair (a1) and Brice R. Rea (a1)
Abstract

Several different methodologies have previously been employed in the tracking of glacier terminus change, though a systematic comparison of these has not been undertaken. The frequent application of single methods to multiple glaciers over large geographical areas such as Greenland, raises the question of whether individual methodologies are robust. In this study we evaluate three existing methodologies that have been widely used to track terminus change (the centre-line, bow and box methods) against a full range of idealized glaciological scenarios and six examples of real glaciers. We also evaluate two new methodologies that aim to reduce measurement error compared with the existing methodologies. The first is a modification to the box method that can account for termini retreating through fjords that change orientation (termed the curvilinear box method), while the second determines the average terminus position relative to the glacier centre line using an inverse distance weighting extrapolation (termed the extrapolated centre-line method). No single method tested achieved complete accuracy for all scenarios, though the extrapolated centre-line method was able to successfully account for variable fjord orientation, width and terminus geometry with the least error.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Evaluation of existing and new methods of tracking glacier terminus change
      Available formats
      ×
      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Evaluation of existing and new methods of tracking glacier terminus change
      Available formats
      ×
      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Evaluation of existing and new methods of tracking glacier terminus change
      Available formats
      ×
Copyright
Copyright © International Glaciological Society 2014 This is an Open Access article, distributed under the terms of the Creative Commons Attribution license. (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
References
Hide All
Bevan, SL, Luckman, AJ and Murray, T (2012) Glacier dynamics over the last quarter of a century at Helheim, Kangerdlugssuaq and 14 other major Greenland outlet glaciers. Cryosphere, 6(5), 923937 (doi: 10.5194/tc-6–923–2012)
Bjørk, AA and 8 others (2012) An aerial view of 80 years of climate-related glacier fluctuations in southeast Greenland. Nature Geosci., 5(6), 427432 (doi: 10.1038/ngeo1481)
Box, JE and Decker, DT (2011) Greenland marine-terminating glacier area changes: 2000–2010. Ann. Glaciol., 52(59), 9198 (doi: 10.3189/172756411799096312)
Braun, M and 7 others (2011) Changes of glacier frontal positions of Vestfonna (Nordaustlandet, Svalbard). Geogr. Ann. A, 93(4), 301310 (doi: 10.1111/j.1468–0459.2011.00437.x)
Christoffersen, P, O’Leary, M, Van Angelen, JH and Van den Broeke, M (2012) Partitioning effects from ocean and atmosphere on the calving stability of Kangerdlugssuaq Glacier, East Greenland. Ann. Glaciol., 53(60 Pt 2), 249256 (doi: 10.3189/2012/AoG60A087)
Cook, AJ, Fox, AJ, Vaughan, DG and Ferrigno, JG (2005) Retreating glacier fronts on the Antarctic Peninsula over the past half-century. Science, 308(5721), 541544 (doi: 10.1126/science. 1104235)
Davies, BJ, Carrivick, JL, Glasser, NF, Hambrey, MJ and Smellie, JL (2012) Variable glacier response to atmospheric warming, northern Antarctic Peninsula, 1988–2009. Cryosphere, 6(5), 10311048 (doi: 10.5194/tc-6–1031–2012)
Howat, IM and Eddy, A (2011) Multi-decadal retreat of Greenland’s marine-terminating glaciers. J. Glaciol., 57(203), 389396 (doi: 10.3189/002214311796905631)
Jiskoot, H, Juhlin, D, St Pierre, H and Citterio, M (2012) Tidewater glacier fluctuations in central East Greenland coastal and fjord regions (1980s–2005). Ann. Glaciol., 53(60 Pt 1), 3544 (doi: 10.3189/2012AoG60A030)
LeBris, R and Paul, F (2013) An automatic method to create flow lines for determination of glacier length: a pilot study with Alaskan glaciers. Comput. Geosci., 52(3), 234245 (doi: 10.1061/jcageo.2012.10.014)
Leclercq, PW and Oerlemans, J (2012) Global and hemispheric temperature reconstruction from glacier length fluctuations. Climate Dyn., 38(5–6), 10651079 (doi: 10.1007/s00382–011–1145–7)
Lopez, P, Chevallier, P, Favier, V, Pouyaud, B, Ordenes, F and Oerlemans, J (2010) A regional view of fluctuations in glacier length in southern South America. Global Planet. Change, 71(1–2), 85108 (doi: 10.1016/j.gloplacha.2009.12.009)
Mernild, SH, Malmros, JK, Yde, JC and Knudsen, NT (2012) Multi-decadal marine- and land-terminating glacier recession in the Ammassalik region, southeast Greenland. Cryosphere, 6(3), 625639 (doi: 10.5194/tc-6–625–2012)
Moon, T and Joughin, I (2008) Changes in ice front position on Greenland’s outlet glaciers from 1992 to 2007. J. Geophys. Res., 113(F2), F02022 (doi: 10.1029/2007JF000927)
Murray, T and 10 others (2010) Ocean regulation hypothesis for glacier dynamics in southeast Greenland and implications for ice sheet mass changes. J. Geophys. Res., 115(F3), F03026 (doi: 10.1029/2009JF001522)
Rignot, E, Velicogna, I, Van den Broeke, MR, Monaghan, A and Lenaerts, J (2011) Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise. Geophys. Res. Lett., 38(5), L05503 (doi: 10.1029/2011GL046583)
Rignot, E, Fenty, I, Menemenlis, D and Xu, Y (2012) Spreading of warm ocean waters around Greenland as a possible cause for glacier acceleration. Ann. Glaciol., 53(60 Pt 2), 257266 (doi: 10.3189/2012AoG60A136)
Shepard, D (1968) A two-dimensional interpolation function for irregularly-spaced data. In Rosenberg, AM and Blue, RB eds. Proceedings of the 23rd Association for Computing Machinery National Conference, 27–29 August 1968 (ACM Publication P-68). Association for Computing Machinery Press, New York, 517524
Van den Broeke, M and 8 others (2009) Partitioning recent Greenland mass loss. Science, 326(5955), 984986 (doi: 10.1126/science.1178176)
VanLooy, JA and Forster, RR (2008) Glacial changes of five southwest British Columbia icefields, Canada, mid-1980s to 1999. J. Glaciol., 54(186), 469478 (doi: 10.3189/002214308785836931)
Walsh, KM, Howat, IM, Ahn Yand Enderlin, EM (2012) Changes in the marine-terminating glaciers of central east Greenland, 2000– 2010. Cryosphere, 6(1), 211220 (doi: 10.5194/tc-6–211–2012)
Weidick, A, Benneke, O, Nørgaard-Pedersen, N and Citterio, M (2012) Neoglacial and historical glacier changes around Kangersuneq Fjord in southern West Greenland. Geol. Surv. Den. Greenl. Bull. 27
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
  • URL: /core/journals/journal-of-glaciology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 12
Total number of PDF views: 190 *
Loading metrics...

Abstract views

Total abstract views: 262 *
Loading metrics...

* Views captured on Cambridge Core between 10th July 2017 - 23rd July 2018. This data will be updated every 24 hours.