Destabilization of the Northeast Greenland Ice Stream

N. J. Korsgaard; Shfaqat Abbas Khan; K. H. Kjaer; M. G. Bevis; J. L. Bamber; K. K. Kjeldsen; A. A. Bjork; J. M. Wahr; L. A. Sterns; M. R. van den Broeke; Ioana Stefania Muresan; N. K. Larsen

Destabilization of the Northeast Greenland Ice Stream

N. J. Korsgaard, Shfaqat Abbas Khan, K. H. Kjaer, M. G. Bevis, J. L. Bamber, K. K. Kjeldsen, A. A. Bjork, J. M. Wahr, L. A. Sterns, M. R. van den Broeke, Ioana Stefania Muresan, N. K. Larsen

National Space Institute

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

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Abstract

The Greenland Ice Sheet (GrIS) has been one of the largest contributors to global sea level rise over the last 20 years, accounting for c. 0.5 of a total of c. 3.2 mm yr-1. A significant portion of this contribution is associated with the speed up of glaciers in southeast and northwest Greenland.

Here, we reveal that the Northeast Greenland Ice Stream (NEGIS), which extends more than 600 km into the interior of the ice sheet, is now undergoing dynamic thinning after more than a quarter of a century of stability. This sector of the GrIS is of particular interest in sea level projections, because the glacier flows into a large submarine basin with a negative bed slope near the grounding line.

Our findings unfold the next step in mass loss of the GrIS as we show a heightened risk of rapid sustained loss from Northeast Greenland on top of the thinning in Southeast and Northwestern Greenland.

Original language	English
Publication date	2013
Number of pages	1
Publication status	Published - 2013
Event	AGU Fall Meeting 2013 - San Francisco, United States Duration: 9 Dec 2013 → 13 Dec 2013

Conference

Conference	AGU Fall Meeting 2013
Country	United States
City	San Francisco
Period	09/12/2013 → 13/12/2013

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@conference{7bc98bdb6b20446baf5aa8ddb4df25be,

title = "Destabilization of the Northeast Greenland Ice Stream",

abstract = "The Greenland Ice Sheet (GrIS) has been one of the largest contributors to global sea level rise over the last 20 years, accounting for c. 0.5 of a total of c. 3.2 mm yr-1. A significant portion of this contribution is associated with the speed up of glaciers in southeast and northwest Greenland. Here, we reveal that the Northeast Greenland Ice Stream (NEGIS), which extends more than 600 km into the interior of the ice sheet, is now undergoing dynamic thinning after more than a quarter of a century of stability. This sector of the GrIS is of particular interest in sea level projections, because the glacier flows into a large submarine basin with a negative bed slope near the grounding line.Our findings unfold the next step in mass loss of the GrIS as we show a heightened risk of rapid sustained loss from Northeast Greenland on top of the thinning in Southeast and Northwestern Greenland.",

author = "Korsgaard, {N. J.} and Khan, {Shfaqat Abbas} and Kjaer, {K. H.} and Bevis, {M. G.} and Bamber, {J. L.} and Kjeldsen, {K. K.} and Bjork, {A. A.} and Wahr, {J. M.} and Sterns, {L. A.} and {van den Broeke}, {M. R.} and Muresan, {Ioana Stefania} and Larsen, {N. K.}",

year = "2013",

language = "English",

note = "AGU Fall Meeting 2013 ; Conference date: 09-12-2013 Through 13-12-2013",

}

Destabilization of the Northeast Greenland Ice Stream. / Korsgaard, N. J.; Khan, Shfaqat Abbas; Kjaer, K. H.; Bevis, M. G.; Bamber, J. L.; Kjeldsen, K. K.; Bjork, A. A.; Wahr, J. M.; Sterns, L. A.; van den Broeke, M. R.; Muresan, Ioana Stefania; Larsen, N. K.

2013. Abstract from AGU Fall Meeting 2013, San Francisco, United States.

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

TY - ABST

T1 - Destabilization of the Northeast Greenland Ice Stream

AU - Korsgaard, N. J.

AU - Khan, Shfaqat Abbas

AU - Kjaer, K. H.

AU - Bevis, M. G.

AU - Bamber, J. L.

AU - Kjeldsen, K. K.

AU - Bjork, A. A.

AU - Wahr, J. M.

AU - Sterns, L. A.

AU - van den Broeke, M. R.

AU - Muresan, Ioana Stefania

AU - Larsen, N. K.

PY - 2013

Y1 - 2013

N2 - The Greenland Ice Sheet (GrIS) has been one of the largest contributors to global sea level rise over the last 20 years, accounting for c. 0.5 of a total of c. 3.2 mm yr-1. A significant portion of this contribution is associated with the speed up of glaciers in southeast and northwest Greenland. Here, we reveal that the Northeast Greenland Ice Stream (NEGIS), which extends more than 600 km into the interior of the ice sheet, is now undergoing dynamic thinning after more than a quarter of a century of stability. This sector of the GrIS is of particular interest in sea level projections, because the glacier flows into a large submarine basin with a negative bed slope near the grounding line.Our findings unfold the next step in mass loss of the GrIS as we show a heightened risk of rapid sustained loss from Northeast Greenland on top of the thinning in Southeast and Northwestern Greenland.

AB - The Greenland Ice Sheet (GrIS) has been one of the largest contributors to global sea level rise over the last 20 years, accounting for c. 0.5 of a total of c. 3.2 mm yr-1. A significant portion of this contribution is associated with the speed up of glaciers in southeast and northwest Greenland. Here, we reveal that the Northeast Greenland Ice Stream (NEGIS), which extends more than 600 km into the interior of the ice sheet, is now undergoing dynamic thinning after more than a quarter of a century of stability. This sector of the GrIS is of particular interest in sea level projections, because the glacier flows into a large submarine basin with a negative bed slope near the grounding line.Our findings unfold the next step in mass loss of the GrIS as we show a heightened risk of rapid sustained loss from Northeast Greenland on top of the thinning in Southeast and Northwestern Greenland.

M3 - Conference abstract for conference

T2 - AGU Fall Meeting 2013

Y2 - 9 December 2013 through 13 December 2013

ER -