Spectral roughness and glacial erosion of a land-terminating section of the Greenland Ice Sheet

Geomorphology

Volumn 238, Issue , 2015, Pages 149-159

  Lindback K ^a   Pettersson, R ^a  

^a UPPSALA UNIVERSITY   (Sweden)

Author keywords

Geological lineaments; Glacial erosion; Greenland; Spectral roughness

Indexed keywords

GLACIAL EROSION; GLACIAL LANDFORM; ICE FLOW; LANDSCAPE EVOLUTION; LINEAMENT; ROUGHNESS; TOPOGRAPHY;

ARCTIC; GREENLAND; GREENLAND ICE SHEET;

EID: 84925438867     PISSN: 0169555X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.geomorph.2015.02.027     Document Type: Article

References (45)

1. Alley R.B. In search of ice-stream sticky spots. J. Glaciol. 1993, 39:447-454.
2. Bamber J.L., Griggs J.A., Hurkmans R.T.W.L., Dowdeswell J.A., Gogineni S.P., Howat I., Mouginot J., Paden J., Palmer S., Rignot E., Steinhage D. A new bed elevation dataset for Greenland. Cryosphere 2013, 7:499-510. 10.5194/tc-7-499-2013.
3. Bamber J.L., Siegert M.J., Griggs J.A., Marshall S.J., Spada G. Paleofluvial Mega-Canyon beneath the central Greenland Ice Sheet. Science 2013, 341(80):997-999. 10.1126/science.1239794.
4. Bartholomew I.D., Nienow P., Sole A., Mair D., Cowton T., King M.A., Palmer S. Seasonal variations in Greenland Ice Sheet motion: Inland extent and behaviour at higher elevations. Earth Planet. Sci. Lett. 2011, 307:271-278. 10.1016/j.epsl.2011.04.014.
5. Bennett M.R. Ice streams as the arteries of an ice sheet: their mechanics, stability and significance. Earth Sci. Rev. 2003, 61:309-339. 10.1016/S0012-8252(02)00130-7.
6. Bingham R.G., Siegert M.J. Quantifying subglacial bed roughness in Antarctica: implications for ice-sheet dynamics and history. Quat. Sci. Rev. 2009, 28:223-236. 10.1016/j.quascirev.2008.10.014.
7. Bonow J.M., Lidmar-Bergström K., Japsen P. Palaeosurfaces in central West Greenland as reference for identification of tectonic movements and estimation of erosion. Glob. Planet. Chang. 2006, 50:161-183. 10.1016/j.gloplacha.2005.12.011.
8. Booth A.D., Clark R.A., Kulessa B., Murray T., Carter J., Doyle S., Hubbard A. Thin-layer effects in glaciological seismic amplitude-versus-angle (AVA) analysis: implications for characterising a subglacial till unit, Russell Glacier, West Greenland. Cryosphere 2012, 6:909-922. 10.5194/tc-6-909-2012.
9. Christensen E.L., Reeh N., Forsberg R., Jørgensen J.H., Skou N., Woelders K. Instruments and methods: a low-cost glacier-mapping system. J. Glaciol. 2000, 46:531-537.
10. Clarke T.S., Echelmeyer K. Seismic-reflection evidence for a deep subglacial trough beneath Jakobshavns Isbræ, West Greenland. J. Glaciol. 1996, 43:219-232.
11. Cressie N. Statistics for Spatial Data 1997, John Wiley and Sons, New York.
12. Dow C.F., Hubbard A., Booth A.D., Doyle S.H., Gusmeroli A. Seismic evidence of mechanically-weak sediments underlying Russell Glacier, West Greenland. Ann. Glaciol. 2013, 54:135-141.
13. Doyle S.H., Hubbard A., Fitzpatrick A.A.W., van As D., Mikkelsen A.B., Pettersson R., Hubbard B. Persistent flow acceleration within the interior of the Greenland Ice Sheet. Geophys. Res. Lett. 2014, 41:899-905. 10.1002/2013GL058933.
14. Fitzpatrick A.A.W., Hubbard A.L., Box J.E., Quincey D.J., van As D., Mikkelsen A.P.B., Doyle S.H., Dow C.F., Hasholt B., Jones G.A. A decade (2002-2012) of supraglacial lake volume estimates across Russell Glacier, West Greenland. Cryosphere 2014, 8:107-121. 10.5194/tc-8-107-2014.
15. Forsberg R., Keller K., Jacobsen S.M. Laser monitoring of ice elevations and sea-ice thickness in Greenland. Int. Arch. Photogramm. Remote. Sens. 2001, XXXIV:163-168.
16. Garde A.A., Hollis J.A. A buried Palaeoproterozoic spreading ridge in the northern Nagssugtoqidian orogen, West Greenland. Geol. Soc. Lond. Spec. Publ. 2010, 338:213-234. 10.1144/SP338.11.
17. Howat I.M., Negrete A., Smith B.E. The Greenland Ice Mapping Project (GIMP) land classification and surface elevation data sets. Cryosphere 2014, 8:1509-1518. 10.5194/tc-8-1509-2014.
18. Irving J.D., Knoll M.D., Knight R.J. Improving crosshole radar velocity tomograms: a new approach to incorporating high-angle traveltime data. Geophysics 2007, 72:31-41. 10.1190/1.2742813.
19. Isaaks E.H., Srivastava R.M. An Introduction to Applied Geostatistics 1989, Oxford University Press, New York, New York.
20. Joughin I., Smith B.E., Howat I.M., Scambos T., Moon T. Greenland flow variability from ice-sheet-wide velocity mapping. J. Glaciol. 2010, 56:415-430. 10.3189/002214310792447734.
21. Klint K.E.S., Engström J., Parmenter A., Ruskeeniemi T., Liljedahl L.C., Lehtinen A. Lineament mapping and geological history of the Kangerlussuaq region, West Greenland. Geol. Surv. Den. Greenl. Bull. 2013, (28):57-60.
22. Layberry R.L., Bamber J.L. A new ice thickness and bed data set for the Greenland ice sheet 2. Relationship between ice dynamics and basal topography. J. Geophys. Res. 2001, 106:33,781-33,788.
23. Leuschen C., Allen C. IceBridge MCoRDS L2 Ice Thickness, 2010-2012 [WWW Document] 2010, NASA DAAC Natl. Snow Ice Data Cent., Boulder, Color. USA, (URL http://nsidc.org/data/irmcr2, accessed 1.10.13).
24. Lindbäck K., Pettersson R., Doyle S.H., Helanow C., Jansson P., Kristensen S.S., Stenseng L., Forsberg R., Hubbard A.L. High-resolution ice thickness and bed topography of a land-terminating section of the Greenland Ice Sheet. Earth Syst. Sci. Data 2014, 6:331-338. 10.5194/essd-6-331-2014.
25. Lythe M.B., Vaughan D.G., The BEDMAP Consortium BEDMAP: A new ice thickness and subglacial topographic model of Antarctica. J. Geophys. Res. 2001, 106:11,335-11,351.
26. Meierbachtol T., Harper J., Humphrey N. Basal drainage system response to increasing surface melt on the Greenland ice sheet. Science 2013, 341:777-779. 10.1126/science.1235905.
27. Natural Resources Canada CSRS-PPP: On-Line GNSS PPP Post-Processing Service [WWW Document] (accessed 1.10.13). http://URL%20http://webapp.geod.nrcan.gc.ca/geod/tools-outils/ppp.php.
28. Palmer S., Shepherd A., Nienow P., Joughin I. Seasonal speedup of the Greenland Ice Sheet linked to routing of surface water. Earth Planet. Sci. Lett. 2011, 302:423-428. 10.1016/j.epsl.2010.12.037.
29. Rippin D.M. Bed roughness beneath the Greenland ice sheet. J. Glaciol. 2013, 59:724-732. 10.3189/2013JoG12J212.
30. Rippin D.M., Vaughan D.G., Corr H.F.J. The basal roughness of Pine Island Glacier, West Antarctica. J. Glaciol. 2011, 57:67-76. 10.3189/002214311795306574.
31. Roberts D.H., Long A.J., Schnabel C., Davies B.J., Xu S., Simpson M.J.R., Huybrechts P. Ice sheet extent and early deglacial history of the southwestern sector of the Greenland Ice Sheet. Quat. Sci. Rev. 2009, 28:2760-2773. 10.1016/j.quascirev.2009.07.002.
32. Ross N., Bingham R.G., Corr H.F.J., Ferraccioli F., Jordan T.A., Le Brocq A., Rippin D.M., Young D., Blankenship D.D., Siegert M.J. Steep reverse bed slope at the grounding line of the Weddell Sea sector in West Antarctica. Nat. Geosci. 2012, 5:393-396. 10.1038/ngeo1468.
33. Shepherd A., Hubbard A., Nienow P., King M., McMillan M., Joughin I. Greenland ice sheet motion coupled with daily melting in late summer. Geophys. Res. Lett. 2009, 36:L01501. 10.1029/2008GL035758.
34. Siegert M.J., Taylor J., Payne A.J. Spectral roughness of subglacial topography and implications for former ice-sheet dynamics in East Antarctica. Glob. Planet. Chang. 2005, 45:249-263. 10.1016/j.gloplacha.2004.09.008.
35. Sole A., Nienow P., Bartholomew I., Mair D., Cowton T., Tedstone A., King M.A. Winter motion mediates dynamic response of the Greenland Ice Sheet to warmer summers. Geophys. Res. Lett. 2013, 40:3940-3944. 10.1002/grl.50764.
36. Steffen K., Box J. Surface climatology of the Greenland ice sheet: Greenland Climate Network 1995-1999. J. Geophys. Res. 2001, 106:33951-33964.
37. Stolt R.H. Migration by Fourier transform. Geophysics 1978, 43:23-48.
38. Storms J.E.A., de Winter I.L., Overeem I., Drijkoningen G.G., Lykke-Andersen H. The Holocene sedimentary history of the Kangerlussuaq Fjord-valley fill, West Greenland. Quat. Sci. Rev. 2012, 35:29-50. 10.1016/j.quascirev.2011.12.014.
39. Taylor J., Siegert M.J., Payne A.J., Hubbard B. Regional-scale bed roughness beneath ice masses: measurement and analysis. Comput. Geosci. 2004, 30:899-908. 10.1016/j.cageo.2004.06.007.
40. van de Wal R.S.W., Boot W., van den Broeke M.R., Smeets C.J.P.P., Reijmer C.H., Donker J.J.A., Oerlemans J. Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet. Science 2008, 321:111-113. 10.1126/science.1158540.
41. van de Wal R.S.W., Boot W., Smeets C.J.P.P., Snellen H., van den Broeke M.R., Oerlemans J. Twenty-one years of mass balance observations along the K-transect, West Greenland. Earth Syst. Sci. Data 2012, 4:31-35. 10.5194/essd-4-31-2012.
42. van Gool, J.A.M., Marker, M., 2007. Explanatory notes to the Geological map of Greenland, 1:100 000, Ussuit 67V. 2 Nord, in: Geol. Surv. Den. Green. Map Series 3. p. 40.
43. van Gool J.A.M., Connelly L.N., Marker M., Mengel F.C. The Nagssugtoqidian orogen of West Greenland: tectonic evolution and regional correlation from a West Greenland perspective. Can. J. Earth Sci. 2002, 39:665-686.
44. van Tatenhove F.G.M., van der Meer J.J.M., Koster E.A. Implications for deglaciation chronology from new AMS age determinations in central West Greenland. Quat. Res. 1996, 45:245-253. 10.1006/qres.1996.0025.
45. Wilson R.W., Klint K.E.S., Gool J.A.M.Van, McCaffrey K.J.W., Holdsworth R.E., Chalmers J.A. Faults and fractures in central West Greenland: onshore expression of continental break-up and sea-floor spreading in the Labrador-Baffin Bay Sea. Geol. Surv. Den. Greenl. Bull. 2006, 11:185-204.