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Characterizing the glaciological conditions at Halvfarryggen ice dome, Dronning Maud Land, Antarctica

  • Reinhard Drews (a1), Carlos Martín (a2), Daniel Steinhage (a1) and Olaf Eisen (a1)
Abstract
Abstract

We present a comprehensive approach (including field data, remote sensing and an anisotropic ice-flow model) to characterize Halvfarryggen ice dome in coastal Dronning Maud Land, Antarctica. This is a potential drill site for the International Partnerships in Ice Core Sciences, which has identified the need for ice cores covering atmospheric conditions during the last few millennia. We derive the surface topography, the ice stratigraphy from radar data, and accumulation rates which vary from 400 to 1670 kg m−2 a−1 due to preferred wind directions and changing surface slope. The stratigraphy shows anticlines and synclines beneath the divides. We transfer Dansgaard–Johnsen age–depth scales from the flanks along isochrones to the divide in the upper 20–50% of the ice thickness and show that they compare well with the results of a full-Stokes, anisotropic ice-flow model which predicts (1) 11 ka BP ice at 90% of the ice thickness, (2) a temporally stable divide for at least 2700–4500 years, (3) basal temperatures below the melting point (−12°C to −5°C) and (4) a highly developed crystal orientation fabric (COF). We suggest drilling into the apices of the deep anticlines, providing a good compromise between record length and temporal resolution and also facilitating studies of the interplay of anisotropic COF and ice flow.

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JL Bamber , JL Gomez-Dans and JA Griggs (2009) A new 1 km digital elevation model of the Antarctic derived from combined satellite radar and laser data – Part 1: data and methods. Cryosphere, 3(1), 101111

R Bindschadler and 17 others (2011) Getting around Antarctica: new high-resolution mappings of the grounded and freely-floating boundaries of the Antarctic ice sheet created for the International Polar Year. Cryosphere, 5(3), 569588 (doi: 10.5194/tc-5-569-2011)

VV Bogorodsky , CR Bentley and PE Gudmandsen (1985) Radio-glaciology. D. Reidel, Dordrecht

H Conway , BL Hall , GH Denton , AM Gades and ED Waddington (1999) Past and future grounding-line retreat of the West Antarctic ice sheet. Science, 286(5438), 280283 (doi: 10.1126/science.286.5438.280)

D Dahl-Jensen (1989) Steady thermomechanical flow along two-dimensional flow lines in large grounded ice sheets. J. Geophys. Res., 94(B8), 10 33510362 (doi: 10.1029/JB094iB08p10355)

W Dansgaard and SJ Johnsen (1969) A flow model and a time scale for the ice core from Camp Century, Greenland. J. Glaciol., 8(53), 215223

R Drews , W Rack , C Wesche and V Helm (2009a) A spatially adjusted elevation model in Dronning Maud Land, Antarctica, based on differential SAR interferometry. IEEE Trans. Geosci. Remote Sens., 47(8), 25012509 (doi: 10.1109/TGRS.2009.2016081)

R Drews and 7 others (2009b) Layer disturbances and the radio-echo free zone in ice sheets. Cryosphere, 3(2), 195203 (doi: 10.5194/tcd-3-307-2009)

O Eisen , U Nixdorf , F Wilhelms and H Miller (2004) Age estimates of isochronous reflection horizons by combining ice core, survey, and synthetic radar data. J. Geophys. Res., 109(B4), B04106 (doi: 10.1029/2003JB002858)

O Eisen and 15 others (2008) Ground-based measurements of spatial and temporal variability of snow accumulation in East Antarctica. Rev. Geophys., 46(RG2), RG2001 (doi: 10.1029/2006RG000218)

F Fernandoy , H Meyer , H Oerter , F Wilhelms , W Graf and J Schwander (2010) Temporal and spatial variation of stable-isotope ratios and accumulation rates in the hinterland of Neumayer station, East Antarctica. J. Glaciol., 56(198), 673687 (doi: 10.3189/002214310793146296)

F Gillet-Chaulet and RCA Hindmarsh (2011) Flow at ice-divide triple junctions: 1. Three-dimensional full-Stokes modeling. J. Geophys. Res., 116(F2), F02023 (doi: 10.1029/2009JF001611)

F Gillet-Chaulet , RCA Hindmarsh , HFJ Corr , EC King and A Jenkins (2011) In-situ quantification of ice rheology and direct measurement of the Raymond Effect at Summit, Greenland using a phase-sensitive radar. Geophys. Res. Lett., 38(24), L24503 (doi: 10.1029/2011GL049843)

AH Goodwin and DG Vaughan (1995) A topographic origin for double-ridge features in visible imagery of ice divides in Antarctica. J. Glaciol., 41(139), 483489

JA Griggs and JL Bamber (2009) A new 1 km digital elevation model of Antarctica derived from combined radar and laser data – Part 2: validation and error estimates. Cryosphere, 3(1), 113123 (doi: 10.5194/tc-3-113-2009)

V Helm and 6 others (2007) Winter accumulation in the percolation zone of Greenland measured by airborne radar altimeter. Geophys. Res. Lett., 34(6), L06501 (doi: 10.1029/2006GL029185)

RCA Hindmarsh (1996) Stochastic perturbation of divide position. Ann. Glaciol., 23, 94104

CS Hvidberg (1996) Steady-state thermomechanical modelling of ice flow near the centre of large ice sheets with the finite-element technique. Ann. Glaciol., 23, 116123

HP Jacobson and ED Waddington (2005) Recumbent folding of divide arches in response to unsteady ice-divide migration. J. Glaciol., 51(173), 301–209 (doi: 10.3189/172756505781829412)

A Kovacs , AJ Gow and RM Morey (1995) The in-situ dielectric constant of polar firn revisited. Cold Reg. Sci. Technol., 23(3), 245256 (doi: 10.1016/0165-232X(94)00016-Q)

C Martín and GH Gudmundsson (2012) Effects of nonlinear rheology, temperature and anisotropy on the relationship between age and depth at ice divides. Cryos. Discuss., 6(3), 22212245 (doi: 10.5194/tcd-6-2221-2012)

C Martín , RCA Hindmarsh and FJ Navarro (2006) Dating ice flow change near the flow divide at Roosevelt Island, Antarctica, by using a thermomechanical model to predict radar stratigraphy. J. Geophys. Res., 111(F1), F01011 (doi: 10.1029/2005JF000326)

C Martín , RCA Hindmarsh and FJ Navarro (2009a) On the effects of divide migration, along-ridge flow, and basal sliding on isochrones near an ice divide. J. Geophys. Res., 114(F2), F02006 (doi: 10.1029/2008JF001025)

C Martín , GH Gudmundsson , HD Pritchard and O Gagliardini (2009b) On the effects of anisotropic rheology on ice flow, internal structure, and the age–depth relationship at ice divides. J. Geophys. Res., 114(F4), F04001 (doi: 10.1029/2008JF001204)

CF Maule , ME Purucker , N Olsen and K Mosegaard (2005) Heat flux anomalies in Antarctica revealed by satellite magnetic data. Science, 309(5733), 464467 (doi: 10.1126/science.1106888)

NA Nereson and CF Raymond (2001) The elevation history of ice streams and the spatial accumulation pattern along the Siple Coast of West Antarctica inferred from ground-based radar data from three inter-ice-stream ridges. J. Glaciol., 47(157), 303313 (doi: 10.3189/172756501781832197)

NA Nereson and ED Waddington (2002) Isochrones and isotherms beneath migrating ice divides. J. Glaciol., 48(160), 95108 (doi: 10.3189/172756502781831647)

NA Nereson , CF Raymond , ED Waddington and RW Jacobel (1998) Migration of the Siple Dome ice divide, West Antarctica. J. Glaciol., 44(148), 643652

NA Nereson , CF Raymond , RW Jacobel and ED Waddington (2000) The accumulation pattern across Siple Dome, West Antarctica, inferred from radar-detected internal layers. J. Glaciol., 46(152), 7587 (doi: 10.3189/172756500781833449)

EC Pettit , HP Jacobson and ED Waddington (2003) Effects of basal sliding on isochrones and flow near an ice divide. Ann. Glaciol., 37, 370376 (doi: 10.3189/172756403781815997)

CF Raymond (1983) Deformation in the vicinity of ice divides. J. Glaciol., 29(103), 357373

E Schlosser , H Oerter , V Masson-Delmotte and C Reijmer (2008) Atmospheric influence on the deuterium excess signal in polar firn: implications for ice-core interpretation. J. Glaciol., 54(184), 117124 (doi: 10.3189/002214308784408991)

NM Shapiro and MH Ritzwoller (2004) Inferring surface heat flux distribution guided by a global seismic model: particular application to Antarctica. Earth Planet. Sci. Lett., 223(1–2), 213224 (doi: 10.1016/j.epsl.2004.04.011)

D Steinhage , U Nixdorf , U Meyer and H Miller (2001) Subglacial topography and internal structure of central, western Dronning Maud Land, Antarctica, determined from airborne radio echo sounding. J. Appl. Geophys., 47(3–4), 183189 (doi: 10.1016/S0926-9851(01)00063-5)

DG Vaughan , HFJ Corr , CSM Doake and ED Waddington (1999) Distortion of isochronous layers in ice revealed by ground-penetrating radar. Nature, 398(6725), 323326 (doi: 10.1038/18653)

C Wesche , S Riedel and D Steinhage (2009) Precise surface topography of the grounded ice ridges at the Ekströmisen, Antarctica, based on several geophysical data sets. ISPRS J. Photogramm. Remote Sens., 64(4), 381386 (doi: 10.1016/j.isprsjprs.2009.01.005)

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Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
  • URL: /core/journals/journal-of-glaciology
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