Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream

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Standard

Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream. / Andersen, J. K.; Rathmann, N.; Hvidberg, C. S.; Grinsted, A.; Kusk, A.; Boncori, J. P. Merryman; Mouginot, J.

In: Geophysical Research Letters, Vol. 50, No. 12, e2023GL103240, 2023.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Andersen, JK, Rathmann, N, Hvidberg, CS, Grinsted, A, Kusk, A, Boncori, JPM & Mouginot, J 2023, 'Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream', Geophysical Research Letters, vol. 50, no. 12, e2023GL103240. https://doi.org/10.1029/2023GL103240

APA

Andersen, J. K., Rathmann, N., Hvidberg, C. S., Grinsted, A., Kusk, A., Boncori, J. P. M., & Mouginot, J. (2023). Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream. Geophysical Research Letters, 50(12), [e2023GL103240]. https://doi.org/10.1029/2023GL103240

Vancouver

Andersen JK, Rathmann N, Hvidberg CS, Grinsted A, Kusk A, Boncori JPM et al. Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream. Geophysical Research Letters. 2023;50(12). e2023GL103240. https://doi.org/10.1029/2023GL103240

Author

Andersen, J. K. ; Rathmann, N. ; Hvidberg, C. S. ; Grinsted, A. ; Kusk, A. ; Boncori, J. P. Merryman ; Mouginot, J. / Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream. In: Geophysical Research Letters. 2023 ; Vol. 50, No. 12.

Bibtex

@article{6d90f02e75834fc39f72919d71c08552,
title = "Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream",
abstract = "Subglacial hydrology can exert an important control on ice flow by affecting friction at the ice-bedrock interface. Here, we report on a series of subglacial drainage events along the Northeast Greenland Ice Stream (NEGIS), initiating as far inland as 500 km from the margin of Zachariae Isstr{\o}m. The drainage events exhibit local transient uplift, followed by prolonged subsidence, measured by differential satellite synthetic aperture radar interferometry (DInSAR). In downstream regions, drainage events are associated with temporary acceleration in ice flow. The high spatiotemporal resolution of the DInSAR measurements allows for a detailed mapping of the drainage propagation pathway. We show that multiple drainage cascades have occurred along the same pathway over the years 2020–2022. Finally, the propagation speed of subglacial water flow is found to vary greatly along NEGIS, suggesting that fundamental differences could exist in the subglacial environment.",
author = "Andersen, {J. K.} and N. Rathmann and Hvidberg, {C. S.} and A. Grinsted and A. Kusk and Boncori, {J. P. Merryman} and J. Mouginot",
year = "2023",
doi = "10.1029/2023GL103240",
language = "English",
volume = "50",
journal = "Geophysical Research Letters (Online)",
issn = "1944-8007",
publisher = "Wiley-Blackwell",
number = "12",

}

RIS

TY - JOUR

T1 - Episodic Subglacial Drainage Cascades Below the Northeast Greenland Ice Stream

AU - Andersen, J. K.

AU - Rathmann, N.

AU - Hvidberg, C. S.

AU - Grinsted, A.

AU - Kusk, A.

AU - Boncori, J. P. Merryman

AU - Mouginot, J.

PY - 2023

Y1 - 2023

N2 - Subglacial hydrology can exert an important control on ice flow by affecting friction at the ice-bedrock interface. Here, we report on a series of subglacial drainage events along the Northeast Greenland Ice Stream (NEGIS), initiating as far inland as 500 km from the margin of Zachariae Isstrøm. The drainage events exhibit local transient uplift, followed by prolonged subsidence, measured by differential satellite synthetic aperture radar interferometry (DInSAR). In downstream regions, drainage events are associated with temporary acceleration in ice flow. The high spatiotemporal resolution of the DInSAR measurements allows for a detailed mapping of the drainage propagation pathway. We show that multiple drainage cascades have occurred along the same pathway over the years 2020–2022. Finally, the propagation speed of subglacial water flow is found to vary greatly along NEGIS, suggesting that fundamental differences could exist in the subglacial environment.

AB - Subglacial hydrology can exert an important control on ice flow by affecting friction at the ice-bedrock interface. Here, we report on a series of subglacial drainage events along the Northeast Greenland Ice Stream (NEGIS), initiating as far inland as 500 km from the margin of Zachariae Isstrøm. The drainage events exhibit local transient uplift, followed by prolonged subsidence, measured by differential satellite synthetic aperture radar interferometry (DInSAR). In downstream regions, drainage events are associated with temporary acceleration in ice flow. The high spatiotemporal resolution of the DInSAR measurements allows for a detailed mapping of the drainage propagation pathway. We show that multiple drainage cascades have occurred along the same pathway over the years 2020–2022. Finally, the propagation speed of subglacial water flow is found to vary greatly along NEGIS, suggesting that fundamental differences could exist in the subglacial environment.

U2 - 10.1029/2023GL103240

DO - 10.1029/2023GL103240

M3 - Journal article

VL - 50

JO - Geophysical Research Letters (Online)

JF - Geophysical Research Letters (Online)

SN - 1944-8007

IS - 12

M1 - e2023GL103240

ER -

ID: 356885054