Initial results from geophysical surveys and shallow coring of the Northeast Greenland Ice Stream (NEGIS)

Cryosphere

Volumn 8, Issue 4, 2014, Pages 1275-1287

  Vallelonga, P ^a   Christianson, K ^b,c   Alley, R B ^d   Anandakrishnan, S ^d   Christian, J E M ^c   Dahl Jensen, D ^a   Gkinis, V ^a   Holme, C ^a   Jacobel, R W ^c   Karlsson, N B ^a   Keisling, B A ^c,e   Kipfstuhl, S ^f   Kjaer H A ^a   Kristensen, M E L ^a   Muto, A ^d   Peters, L E ^d   Popp, T ^a   Riverman, K L ^d   Svensson, A M ^a   Tibuleac, C ^a   Vinther, B M ^a   Weng, Y ^a   Winstrup, M ^a   more..

^a UNIVERSITY OF COPENHAGEN   (Denmark)

^b NEW YORK UNIVERSITY   (United States)

^c ST OLAF COLLEGE   (United States)

^d PENNSYLVANIA STATE UNIVERSITY   (United States)

^e UNIVERSITY OF MASSACHUSETTS   (United States)

^f ALFRED WEGENER INSTITUTE FOR POLAR AND MARINE RESEARCH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84902456983     PISSN: 19940416     EISSN: 19940424     Source Type: Journal    
DOI: 10.5194/tc-8-1275-2014     Document Type: Article

References (56)

1. Aki, K. and Richards, P. G.: Quantitative Seismology, 2 Edn., University Science Books, Sausalito, 2002.
2. Alley, R. B .: Firn densification by grain-boundary sliding: a first model, J. Phys.-Paris, 48, 249-254, doi:10.1051/jphyscol:1987135, 1987.
3. Alley, R. B. and Bentley, C. R.: Ice-core analysis on the Siple Coast o f West Antarctica, Ann. Glaciol., 11, 1-7, 1988.
4. Alley R.B.,Whillans I.M.: Changes in the West Antarctic ice sheet, Science, 254, 959-963, doi:10.1126/science.254.5034.959, 1991. (Pubitemid 21917417)
5. Alley, R. B. and Whillans, I. M.: Changes in the West Antarctic ice sheet, Science, 254, 959-963, doi:10.1126/science.254.5034.959, 1991. Alley, R. B., Blankenship, D. D., Bentley, C. R., and Rooney, S. T.: Deformation of till beneath Ice Stream B, West Antarctica, Nature, 322, 57-59, doi:10.1038/322057a0, 1986. (Pubitemid 17264804)
6. Anandakrishnan, S., Blankenship, D. D., Alley, R. B., and Stoffa, P. L.: Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations, Nature, 394, 62-65, doi:10.1038/27889, 1998. (Pubitemid 28321800)
7. Andersen, K. K., Svensson, A., Rasmussen, S. O., Steffensen, J. P., Johnsen, S. J., Bigler, M., Röthlisberger, R., Ruth, U., Siggaard-Andersen, M.-L., Dahl-Jensen, D., Vinther, B. M., and Clausen, H. B.: The Greenland Ice Core Chronology 2005, 15-42 ka, Part 1: constructing the time scale, Quaternary Sci. Rev., 25, 3246- 3257, doi:10.1016/j.quascirev.2006.08.002, 2006. (Pubitemid 46209388)
8. 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., and Steinhage, D.: A new bed elevation dataset for Greenland, The Cryosphere, 7, 499- 510, doi:10.5194/tc-7-499-2013, 2013.
9. Bell, R. E., Blankenship, D. D., Finn, C. A., Morse, D. L., Scambos, T. A., Brozena, J. M., and Hodge, S. M.: Influence of subglacial geology on t he onset of a West Antarctic ice stream from aerogeophysical observations, Nature, 394, 58-61, doi:10.1038/27883, 1998. (Pubitemid 28321799)
10. Bigler, M., Wagenbach, D., Fischer, H., Kipfstuhl, J., Miller, H., Sommer, S., and St auffer, B.: Sulphate record from a northeast Greenland ice core over the last 1200 years based on continuous flow analysis, Ann. Glaciol., 35, 250-256, doi:10.3189/172756402781817158, 2002. (Pubitemid 36386601)
11. Bigler, M., Svensson, A., Kettner, E., Vallelonga, P., Nielsen, M., and Steffensen, J. P.: Optimization of high-resolution continuous flow analysis for transient climate signals in ice cores, Environ. Sci. Technol., 45, 4483 -4489, doi:10.1021/es200118j, 2011.
12. Bingham, R. G., Ferraccioli, F., King, E. C., Larter, R. D., Pritchard, H. D., Smith, A. M., and Vaughan, D. G.: Inland thinning ofWest Antarctic Ice Sheet steered along subglacial rifts, Nature, 487, 468 -471, doi:10.1038/nature11292, 2012.
13. Blankenship, D. D., Bentley, C. R., Rooney, S. T., and Alley, R. B.: Seismic measurements reveal a saturated porous till layer beneath an active Antarctic ice stream, Nature, 322, 54-57, doi:10.1038/322054a0, 1986. (Pubitemid 17264879)
14. Bory, A. J.-M., Biscaye, P. E., Piotrowski, A. M., and Steffensen, J. P.: Regional variability of ice core dust composition and provenance in Greenland, Geochem. Geophy. Geosy., 4, 1107, doi:10.1029/2003GC000627, 2003.
15. Chen, G.: GPS kinematic positioning for airborne laser altimetry at Long Valley, Ph.D. thesis, Massachussetts Institute of Technology, Cambridge, MA, USA, 1998.
16. Christianson, K., Jacobel, R. W., Horgan, H. J., Anandakrishnan, S., and Alley, R. B.: Subglacial Lake Whillans-Ice-penetr ating radar and GPS observations of a shallow active reservoir beneath a West Antarctic ice stream, Earth Planet. Sc. Lett., 331- 332, 237- 245, doi:10.1016/j.epsl.2012.03.013, 2012.
17. Christianson, K., Peters, L. E., Alley, R. B., Anandakrishnan, S., Jacobel, R.W., Riverman, K. L., Muto, A., and Keisling, B. A.: Dilatant till facilitates ice-stream flow in northeast Greenland, Earth Planet. Sci. Lett., 401, 5 7- 69, doi:10.1016/j.epsl.2014.05.060, 2014.
18. Fahnestock, M. A., Bindschadler, R., Kwok, R., and Jezek, K.: Greenland ice sheet surface properties and ice dynamics from ERS-1 SAR imagery, Science, 262, 1530-1534, doi:10.1126/science.262.5139.1530, 1993.
19. Fahnestock, M. A., Joughin, I., Scambos, T. A., Kwok, R., Karbill, W. B., and Gogineni, S.: Ice-stream-related patterns of ice flow in the interior of northeast Greenland, J. Geophys. Res., 106, 34035-34045, doi:10.1029/ 2001JD900194, 2001.
20. Fischer, H., Wagenbach, D., and Kipfstuhl, J.: Sulfate and nitrate firn concentrations on the Greenland ice sheet 2. Temporal anthropogenic deposition changes, J. Geophys. Res., 103, 21935-21942, doi:10.1029/98JD01886, 1998a . (Pubitemid 29128574)
21. Fischer, H., Wagenbach, D., and Kipfstuhl, J.: Sulfate and nitrate firn concentrations on the Greenland ice sheet 1. Large-scale geographical deposition changes, J. Geophys. Res., 103, 21927-21934, doi:10.1029/98JD01885, 1998 b. (Pubitemid 29123178)
22. Gkinis, V., Popp, T. J., Blunier, T., Bigler, M., Schüpbach, S., Kettner, E., and Johnsen, S. J.: Water isotopic ratios from a continuously melted ice core sample, Atmos. Meas. Tech., 4, 2531 -2542, doi:10.5194/amt-4- 2531-2011, 2011.
23. Gogineni, P.: CReSIS MCOR DS19990525-01-010 Data, Lawrence, Kansas, USA, Digital Media, http://data.cresis. ku.edu/(last access: May 2014), 2012.
24. Gow, A. J.: On the accumulation and seasonal stratification of snow at the South Pole, J. Glaciol., 5, 467-477, 1965.
25. Holland, D. M., Thomas, R. H., De Young, B., Ribergaard, M. H., and Lyberth, B.: Acceleration of Jakobshavn Isbrae triggered by warm subsurface ocean waters, Nat. Geosci., 1, 659-664, doi:10.1038/ngeo316, 2008.
26. Joughin I.,Fahnestock M.,Mac Ayeal D.,Bamber J.L.,Gogineni P.: Observation and analysis of ice flow in the largest Greenland ice stream, J. Geophys. Res., 106, 34021-34034, doi:10.1029/2001jd900087, 2001.
27. Joughin, I., Smith, B. E., and Holland, D. M.: Sensitivity of 21st century sea level to ocean-induced thinning of Pine Island Glacier, Antarctica, Geophys. Res. Lett., 37, L20502, doi:10.1029/2010gl044819, 2010.
28. Joughin, I., Alley, R. B., and Holland, D. M.: Ice-Sheet Response to Oceanic Forcing, Science, 338, 1172-1176, doi:10.1126/science.1226481, 2012a.
29. Joughin, I., Smith, B. E., Howat, I. M., Floricioiu, D., Alley, R. B., Truffer, M., and Fahnestock, M.: Seasonal to decadal scale variations in the surface velocity of Jakobshavn Isbrae, Greenland: observation and model-based analysis, J. Geophys. Res., 117, F02030, doi:10.1029/2011jf002110, 2012b.
30. Kamb, B.: Basal Zone of the West Antarctic ice streams and its role in lubrication of their rapid motion, in: The West Antarctic Ice Sheet: Behavior and Environment, edited by: Alley, R. B. and Bindschadler, R. A., Antarctic Research Ser ies, American Geophysical Union, Washington DC, 157-159, 2001.
31. Keisling, B. A., Christianson, K., Alley, R. B., Peters, L. E., Christian, J. E. M., Anandakrishnan, S., Riverman, K. L., Muto, A., and Jacobel, R. W.: Basal conditions and ice dynamics inferred from radar-derived internal stratigraphy of the Northeast Greenland Ice Stream, Ann. Glaciol., 55, 127 -137, doi:10.3189/2014AoG67A090, 2014.
32. Kirchner, J. F. and Bentley, C. R.: RIGGS III: Seismic shortrefraction studies using an analytical curve-fitting technique, in: The Ross Ice Shelf: Glaciology and Geophysics, edited by: Bentley, C. R., and Hayes, D. E., Antarctic Research Series, American Geophysical Union, Washington DC, 1990.
33. Kjæ r, H. A., Vallelonga, P., Svensson, A., Kristensen, M. E. L., Tibuleac, C., and Bigler, M.: Continuous flow analysis method for determination of dissolved reactive phosphorus in ice cores, Environ. Sci. Technol., 47, 12325- 12332, doi:10.1021/es402274z, 2013.
34. Kohnen, H.: On the relation between seismic velocities and density in firn and ice, Zeitschrift für Geophysik, 38, 925-935, 1972.
35. Legrand, M. and Mayewski, P.: Glaciochemistry of Polar ice cores: a review, Rev. Geophys., 35, 219-243, doi:10.1029/96RG03527, 1997. (Pubitemid 127667418)
36. Legrand, M., De Angelis, M., Staffelbach, T., Neftel, A., and Stauffer, B.: Large perturbations of ammonium and organic acids content in the Summit-Greenland ice core. Fingerprint from forest fires?, Geophys. Res. L ett., 19, 473-475, doi:10.1029/91GL03121, 1992.
37. Marlon, J. R., Bartlein, P. J., Carcaillet, C., Gavin, D. G., Harrison, S. P., Higuera, P. E., Joos, F., Power, M. J., and Prentice, I. C.: Climate and human influences on global biomass burning over the past two millennia, Nat. Geosci., 1, 697-702, doi:10.1038/ngeo313, 2008.
38. Moon, T., Joughin, I., Smith, B., and Howat, I.: 21st-centu ry evolution of greenland outlet glacier velocities, Science, 336, 576- 578, doi:10.1126/science.1219985, 2012.
39. Moore, J. C., Mulvaney, R., and Paren, J. G.: Dielectric stratigraphy of ice: a new technique for determining total ionic concentrations trations in polar ice cores, Geophys. Res. Lett., 16, 1177-1180, doi:10.1029/ GL016i010p01177, 1989.
40. NEEM Community members: Eemian interglacial reconstructed from a Greenland folded ice core, Nature, 493, 489- 494, doi:10.1038/nature11789, 2013.
41. NGRIP members: High-resolution record of Northern Hemisphere climate extending into the last interglacial period, Nature, 431, 147-151, doi:10.1038/nature02805, 2004. (Pubitemid 39243460)
42. Peters, L. E.: A seismic investigation of basal conditions in glaciated regions, Ph.D. thesis, The Pennsylvania State University, Pennsylvania, USA, 2009.
43. Peters, L. E., Anandakrishnan, S., Alley, R. B., and Smith, A. M.: Extensive storage of basal meltwater in the onset region of a major West Antarctic ice stream, Geology, 35, 251-254, doi:10.1130/G23222A.1, 2007. (Pubitemid 46437833)
44. Peters, L. E., Anandakrishnan, S., Holland, C. W., Horgan, H. J., Blankenship, D. D., and Voigt, D. E.: Seismic detection of a subglacial lake near the South Pole, Antarctica, Geophys. Res. Lett., 35, L23501, doi:10.1029/2008GL035704, 2008.
45. Petr unin, A. G., Rogozhina, I., Vaughan, A. P. M., Kukkonen, I. T., Kaban, M. K., Koulakov, I., and Thomas, M.: Heat flux variations beneath central Greenland's ice due to anomalously thin lithosphere, Nat. Geosci., 6, 746 -750, doi:10.1038/ngeo1898, 2013.
46. Pfeffer, W. T., Harper, J. T., and O'Neel, S.: Kinematic constraints on glacier contributions to 21st-century sea-level rise, Science, 321, 1340-1343, doi:10.1126/science.1159099, 2008.
47. Reeh N.,Johnsen S.J.,Dahl-Jensen D.: Dating the Dye 3 deep ice core by flow model calculations, in: Greenland Ice Cores: Geophysics, Geochemistry and the Environment, Geophy. Monog. Series, 33, American Geophysical Union, Washington DC, USA, 1985.
48. Rignot, E., Velicogna, I., van den Broeke, M. R., Monaghan, A., and Lenaerts, J. T. M.: Acceleration of the contribution of the Gre enland and Antarctic ice sheets to sea level rise, Geophys. Res. Lett., 38, L05503, doi:10.1029/2011gl046583, 2011.
49. Straneo, F., Sutherland, D. A., Holland, D., Gladish, C., Hamilton, G., Johnson, H., Rignot, E., Xu, Y., and Koppes, M.: Characteristics of ocean waters reaching Greenland's glaciers, Ann. Glaciol., 53, 202 -210, doi:10.3189/2012AoG60A059, 2012.
50. van den Broeke, M., Bamber, J., Et tema, J., Rignot, E., Schrama, E., van de Berg,W. J., van Meijgaard, E., Velicogna, I., andWouters, B.: Partitioning recent greenland mass loss, Science, 326, 984-986, doi:10.1126/science.1178176, 2009.
51. Welch, B. C. and Jacobel, R.W.: Analysis of deep-penetrating radar surveys of West Antarctica, US-ITASE 2001, Geophys. Res. Lett., 30, 1444, doi:10.1029/2003GL017210, 2003.
52. Welch, B. C., Jacobel, R. W., and Arcone, S.: First results from radar profiles collected along the US-ITASE traverse from Taylor Dome to South Pole (2006- 2008), Ann. Glaciol., 50, 35- 41, doi:10.3189/172756409789097496, 2009.
53. Winstrup, M., Svensson, A. M., Rasmussen, S. O., Winther, O., Steig, E. J., and Axelrod, A. E.: An automated approach for annual layer counting in ice cores, Clim. Past, 8, 1881- 1895, doi:10.5194/cp-8-1881-2012, 2012.
54. Wolff, E. W., Chappellaz, J., Blunier, T., Rasmussen, S. O., and Svensson, A.: Millennialscale variability during the last glacial: the ice core record, Quaternary Sci. Rev., 29, 2828 -2838, doi:10.1016/j.quascirev.2009.10. 013, 2010.
55. Wouters, B., Bamber, J. L., van den Broeke, M. R., Lenaerts, J. T. M., and Sasgen, I.: Limits in detecting acceleration of ice sheet mass loss due to climate variability, Nat. Geosci., 6, 613 -616, doi:10.1038/ngeo1874, 2013.
56. Yin, J.: Century to multi-century sea level rise projections from CMIP5 models, Geophys. Res. Lett., 39, L17709, doi:10.1029/2012gl052947, 2012.