IceFlow

Map of the surface velocities in part of the North East Greenland ice stream

Map of the surface velocities in part of the North East Greenland ice stream (NEGIS) close to the EGRIP drill site (marked by a black line). A radio-echo-sounding (RES) image shows the internal structure of the ice in and around the ice stream.

The overall aim of IceFlow is to investigate how ice flows and ice streams influence the evolution of the Greenland ice sheet. 

We are developing new methods to measure ice-crystal-related parameters from the EGRIP ice core in the North East Greenland ice stream. In addition, borehole data, ice-core deformation, and basal observations are planned. We will combine these EGRIP measurements with large-scale observations of the ice stream from radars and drones to model the evolution of the ice stream and its flow pattern. To further investigate the impact of the ice fabric on flow, we will drill through one of the strange and large basal structures on the side of the ice stream with a rapid access drill. These observations will increase our understanding of how ice streams form and develop, and will feed into ice-stream models. The aim is to model the full ice-stream system including ocean interaction and grounding line processes.

The goals to be reached by IceFlow will lead to a much stronger scientific understanding, and possibly a breakthrough, in understanding the flow of ice in and around an ice stream. 

IceFlow is supported by the Villum Foundation.

Publications from the IceFlow team

 

Abbott, PM, Niemeier, U, Timmreck, C, Riede, F, McConnell, JR, Severi, M, Fischer, H, Svensson, A, Toohey, M, Reinig, F, Sigl, M (2021)
Volcanic climate forcing preceding the inception of the Younger Dryas: Implications for tracing the Laacher See eruption
Quaternary Science Reviews, 274, 107260.
Look up abstract/reprint using doi: 10.1016/j.quascirev.2021.107260

Bons, PD, de Riese, T, Franke, S, Llorens, M-G, Sachau, T, Stoll, N, Weikusat, I, Westhoff, J & Zhang, Y (2021)
Comment on “Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream” by Smith-Johnsen et al. (2020)
The Cryosphere, 15 (2251–2254).
Look up abstract/reprint using doi: 10.5194/tc-15-2251-2021

Buizert, C, Fudge, TJ, Roberts, WHG, Steig, EJ, Sherriff-Tadano, S, Ritz, C, Lefebvre, E, Edwards, J, Kawamura, K, Oyabu, I, Motoyama, H, Kahle, EC, Jones, TR, Abe-Ouchi, A, Obase, T, Martin, C, Corr, H, Severinghaus, JP, Beaudette, R, Epifanio, JA, Brook, EJ, Martin, K, Chappellaz, J, Aoki, S, Nakazawa, T, Sowers, TA, Alley, RB, Ahn, J, Sigl, M, Severi, M, Dunbar, NW, Svensson, A, Fegyveresi, JM, He, C, Liu, Z, Zhu, J, Otto-Bliesner, BL, Lipenkov, VY, Kageyama, M, Schwander, J  (2021)
Antarctic surface temperature and elevation during the Last Glacial Maximum
Science, 372(6546), 1097–1101
Look up abstract/reprint using doi: 10.1126/science.abd2897

Capron, E, Rasmussen, SO, Popp, TJ, Erhardt, T, Fischer, H, Landais, A, Pedro, JB, Vettoretti, G, Grinsted, A, Gkinis, V, Vaughn, B, Svensson, A, Vinther, BM, White, JWC (2021)
The anatomy of past abrupt warmings recorded in Greenland ice
Nature Communications, 12(1), 2106.
Look up abstract/reprint using doi: 10.1038/s41467-021-22241-w

Christ, AJ, Bierman, PR, Schaefer, JM, Dahl-Jensen, D, Steffensen, JP, Corbett, LB, Peteet, DM, Thomas, EK, Steig, EJ, Rittenour, TM, Tison, JL, Blard, PH, Perdrial, N, Dethier, DP, Lini, A, Hidy, AJ, Caffee, MW & Southon, J (2021)
A multimillion-year-old record of Greenland vegetation and glacial history preserved in sediment beneath 1.4 km of ice at Camp Century
Proceedings of the National Academy of Sciences, 118 (13).
Look up abstract/reprint using doi: 10.1073/pnas.2021442118

Crick, L, Burke, A, Hutchison, W, Kohno, M, Moore, KA, Savarino, J, Doyle, EA, Mahony, S, Kipfstuhl, S, Rae, JWB., Steele, RCJ, Sparks, RSJ., Wolff, EW (2021)
New insights into the ∼ 74 ka Toba eruption from sulfur isotopes of polar ice cores
Climate of the Past, 17(5), 2119–2137
Look up abstract/reprint using doi:  10.5194/cp-17-2119-2021

Enrichi, F, Dahl-Jensen, D, Steffensen, JP, & Barbante, C (2021).
Theoretical and Experimental Analysis for Cleaning Ice Cores from EstisolTM 140 Drill Liquid. 
Applied Sciences, 11(9), 3830.
Look up abstract/reprint using doi: 10.3390/app11093830

Gerber, TA, Hvidberg, CS, Rasmussen, SO, Frank, S, Sinnl, G, Grinsted, A, Jensen, D & Dahl-Jensen, D (2021)
Upstream flow effects revealed in the EastGRIP ice core using Monte Carlo inversion of a two-dimensional ice-flow model
The Cryosphere, vol. 15, pp. 3655-3679
Look up abstract/reprint using doi: 10.5194/tc-15-3655-2021

Gkinis, V, Vinther, BM, Popp, T J, Quistgaard, T, Faber, A-K, Holme, CT, Jensen, C-M, Lanzky, M, Lütt, A-M, Mandrakis, V, Ørum, N-O, Pedersen, A-S, Vaxevani, N, Weng, Y, Capron, E, Dahl-Jensen, D, Hörhold, M, Jones, TR, Jouzel, J, Landais, A, Masson-Delmotte, V, Oerter, H, Rasmussen, SO, Steen-Larsen, HC, Steffensen, JP, Sveinbjörnsdóttir, ÁE, Svensson, A, Vaughn, B, White, JWC (2021)
A 120,000-year long climate record from a NW-Greenland deep ice core at ultra-high resolution
Scientific Data, 8(1), 141.
Look up abstract/reprint using doi: 10.1038/s41597-021-00916-9

Gkinis, V, Holme, C, Kahle, EC, Steven, MC, Steig, EJ & Vinther, BM (2021)
Numerical experimets on firn isotope diffusion with Community Firn Model
Journal of Glaciology, pp. 1-29.
Look up abstract/reprint using doi: 10.1017/jog.2021.1

Grinsted, A & Christensen, JH (2021)
The transient sensitivity of sea level rise
Ocean Science, vol. 17, pp. 181-186.
Look up abstract/reprint using doi: 10.5194/os-17-181-2021

Harlan, M, Kjær, HA, Vance, T, Vallelonga, P, Gkinis, V, Blunier, T, Svensson, A, Moy, A, Plummer, C, Jackson, S, Peensoo, K, de Campo, A (2021)
Continuous flow analysis of the Mount Brown South ice core
Other.
Look up abstract/reprint using doi:  10.5194/egusphere-egu21-15782

Kjær, HA, Harlan, M, Vallelonga, P, Svensson, A, Blunier, T, Sowers, T, Menking, JA, de Campo, A, Venkatesh, J, Liisberg, J, Soestmeyer, D, Morris, V, Vaughn, B, Vinther, B, (2021)
Forty years later: High resolution continuous flow analysis of the Dye3 ice core
Other. pico.
Look up abstract/reprint using doi:  10.5194/tc-2021-51

Kjær, HA, Lolk Hauge, L, Simonsen, M, Yoldi, Z, Koldtoft, I, Hörholdt, M, Freitag, J, Kipfstuhl, S, Svensson, A, Vallelonga, P (2021)
Supplementary material to “A portable Lightweight In Situ Analysis (LISA) box for ice and snow analysis”
(other). Glaciers/Field Studies/tc-2021-51.
Look up abstract/reprint using doi:  10.5194/egusphere-egu21-11820

Kjær, HA, Lolk Hauge, L, Simonsen, M, Yoldi, Z, Koldtoft, I, Hörholdt, M, Freitag, J, Kipfstuhl, S, Svensson, A, Vallelonga, P (2021)
A portable Lightweight In Situ Analysis (LISA) box for ice and snow analysis (preprint). The Cryosphere Discussions
Look up abstract/reprint using doi:  10.5194/tc-2021-51-supplement

Koldtoft, I, Grinsted, A, Vinther, B & Hvidberg, C (2021)
Ice thickness and volume of the Renland Ice Cap, East Greenland
Journal of Glaciology, pp. 1-13.
Look up abstract/reprint using doi: 10.1017/jog.2021.11

Komuro, Y, Nakazawa, F, Hirabayashi, M, Goto-Azuma, K, Nagatsuka, N, Shigeyama, W, Matoba, S, Homma, T, Steffensen, JP, Dahl-Jensen, D (2021)
Temporal and spatial variabilities in surface mass balance at the EGRIP site, Greenland from 2009 to 2017
Polar Science, 27, 100568.
Look up abstract/reprint using doi:  10.1016/j.polar.2020.100568

Lilien, DA, Steinhage, D, Taylor, D, Parrenin, F, Ritz, C, Mulvaney, R, Martín, C, Yan, JB, O’Neill, C, Frezzotti, M, Miller, H, Gogineni, P, Dahl-Jensen, D, Eisen, O (2021).
Brief communication: New radar constraints support presence of ice older than 1.5 Myr at Little Dome C
The Cryosphere, 15(4), 1881–1888
Look up abstract/reprint using doi:  10.5194/tc-15-1881-2021

Lilien, DA, Rathmann, NM, Hvidberg, CS, & Dahl‐Jensen, D (2021).
Modeling IceCrystal Fabric as a Proxy for IceStream Stability
Journal of Geophysical Research: Earth Surface, 126(9)
Look up abstract/reprint using doi:  10.1029/2021JF006306

Lilien, DA, Steinhage, D, Taylor, D, Parrenin, F, Ritz, C, Mulvaney, R, Martín, C, Yan, JB, O'Neill, C, Frezzotti, M, Miller, H, Gogineni, P, Dahl-Jensen, D & Eisen, O (2021)
New radar constraints support presence of ice older than 1.5 Myr at Little Dome C
The Cryosphere: Brief communication, 15 (1881-1888).
Look up abstract/reprint using doi: 10.5194/tc-15-1881-2021

Lin, J, Svensson, A, Hvidberg, CS, Lohmann, J, Kristiansen, S, Dahl-Jensen, D, Steffensen, JP, Rasmussen, SO, Cook, E, Kjær, HA, Vinther, BM, Fischer, H, Stocker, T, Sigl, M, Bigler, M, Severi, M, Traversi, R, Mulvaney, R (2021)
Magnitude, frequency and climate forcing of global volcanism during the last glacial period as seen in Greenland and Antarctic ice cores (60–9 ka) (preprint)
Atmospheric Dynamics/Ice Cores/Millenial/D-O.
Look up abstract/reprint using doi:  10.5194/cp-2021-100

Maffezzoli, N, Risebrobakken, B, Miles, MW, Vallelonga, P, Berben, SMP, Scoto, F, Edwards, R, Kjær, HA, Sadatzki, H, Saiz-Lopez, A, Turetta, C, Barbante, C, Vinther, B, Spolaor, A (2021)
Sea ice in the northern North Atlantic through the Holocene: Evidence from ice cores and marine sediment records
Quaternary Science Reviews, 273, 107249. H
Look up abstract/reprint using doi:  10.1016/j.quascirev.2021.107249

Nakazawa, F, Nagatsuka, N, Hirabayashi, M, Goto-Azuma, K, Steffensen, JP, & Dahl-Jensen, D (2021)
Variation in recent annual snow deposition and seasonality of snow chemistry at the east Greenland ice core project (EGRIP) camp, Greenland
Polar Science, 27, 100597
Look up abstract/reprint using doi:  10.1016/j.polar.2020.100597

Prior-Jones, MR, Bagshaw, EA, Lees, J, Clare, L, Burrow, S, Werder, MA, Karlsson, NB, Dahl-Jensen, D, Chundley, TR, Christoffersen, P, Wadham, JL, Doyle, SH & Hubbard, B (2021)
Cryoegg: development and field trials of a wireless subglacial probe for deep, fast-moving ice
Journal of Glaciology, pp. 1-14.
Look up abstract/reprint using doi: 10.1017/jog.2021.16

Rathmann, N, Hvidberg, CS, Grinsted, A, Lilien, DA & Dahl-Jensen, D (2021)
Effect of an orientation-dependent non-linear grain fluidity on bulk directional enhancement factors
Journal of Glaciology, pp. 1-7.
Look up abstract/reprint using doi: 10.1017/jog.2020.117

Segato, D, Villoslada, H, MDC, Edwards, R, Barbaro, E, Vallelonga, P, Kjær, HA, Simonsen, M, Vinther, B, Maffezzoli, N, Zangrando, R, Turetta, C, Battistel, D, Vesteinsson, O, Barbante, C & Spolaor, A (2021)
A Five thousand years of fire history in the high North Atlantic region: natural variability and ancient human forcing
Climate of the Past, vol. 17, no. 4, pp. 1533-1545
Look up abstract/reprint using doi: 10.5194/cp-17-1533-2021

Vandecrux, B, Colgan, W, Solgaard, AM, Steffensen, JP & Karlsson, NB (2021)
Firn Evolution at Camp Century, Greenland: 1966-2100
Frontiers in Earth Science, vol. 9
Look up abstract/reprint using doi: 10.3389/feart.2021.578978

Weinhart, AH., Kipfstuhl, S, Hörhold, M, Eisen, O, & Freitag, J (2021)
Spatial Distribution of Crusts in Antarctic and Greenland Snowpacks and Implications for Snow and Firn Studies
Frontiers in Earth Science, 9, 630070
Look up abstract/reprint using doi:  10.3389/feart.2021.630070

Westhoff, J, Sinnl, G, Svensson, A,  Freitag, J, Kjær, HA, Vallelonga, PT, Vinther, BM, Kipfstuhl, S, Dahl-Jensen, D, Weikusat, I (2021) 
Melt in the Greenland EastGRIP ice core reveals Holocene warming events
Copernicus/EGU
Look up abstract/reprint using doi: 10.5194/cp-2021-89

Zheng, P, Pedro, J, Jochum, M, Rasmussen, SO & Lai, Z (2021)
Different Trends in Antarctic Temperature and Atmospheric CO2 During the Last Glacial
Geophysical Research Letters, vol. 48, no. 14
Look up abstract/reprint using doi: 10.1029/2021GL093868