Recent ice-surface-elevation changes of Fleming Glacier in response to the removal of the Wordie Ice Shelf, Antarctic Peninsula

Wendt, Jens; Rivera, Andrés; Wendt, Anja; Bown, Francisca; Zamora, Rodrigo; Casassa, Gino; Bravo, Claudio

doi:10.3189/172756410791392727

Cited by 24 publications

(47 citation statements)

References 36 publications

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“…Numerous ice shelves along the AP have retreated widely (e.g., Müller, Wilkins, Wordie) or disintegrated in recent decades (e.g., Larsen A in 1995, Larsen B in 2002 (Braun and Humbert, 2009;Cook and Vaughan, 2010;Doake and Vaughan, 1991;Rack and Rott, 2003;Wendt et al, 2010). As a consequence of the reduced buttressing, former tributary glaciers showed increased ice discharge and frontal retreat (e.g., De Angelis and Rack and Rott, 2004;Rignot et al, 2004;Seehaus et al, 2015;Wendt et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence of the reduced buttressing, former tributary glaciers showed increased ice discharge and frontal retreat (e.g., De Angelis and Rack and Rott, 2004;Rignot et al, 2004;Seehaus et al, 2015;Wendt et al, 2010). For the northern AP (< 66 • S), a mass loss rate of −24.9 ± 7.8 Gt a −1 was reported by Scambos et al (2014) for the period 2003-2008, indicating that major ice mass depletion happened at the northern AP, especially along the eastern side, where numerous glaciers have been affected by ice shelf collapses.…”

Section: Introductionmentioning

confidence: 99%

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Changes in glacier dynamics in the northern Antarctic Peninsula since 1985

Seehaus

Cook

Silva³

et al. 2018

The Cryosphere

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Abstract. The climatic conditions along the northern Antarctic Peninsula have shown significant changes within the last 50 years. Here we present a comprehensive analysis of temporally and spatially detailed observations of the changes in ice dynamics along both the east and west coastlines of the northern Antarctic Peninsula. Temporal evolutions of glacier area and ice surface velocity are derived from a broad multi-mission remote sensing database for 74 glacier basins on the northern Antarctic Peninsula ( < 65 • S along the west coast and north of the Seal Nunataks on the east coast). A recession of the glaciers by 238.81 km 2 is found for the period 1985-2015, of which the glaciers affected by ice shelf disintegration showed the largest retreat by 208.59 km 2 . Glaciers on the east coast north of the former Prince Gustav Ice Shelf extent in 1986 receded by only 21.07 km 2 (1985-2015) and decelerated by about 58 % on average . A dramatic acceleration after ice shelf disintegration with a subsequent deceleration is observed at most former ice shelf tributaries on the east coast, combined with a significant frontal retreat. In 2014, the flow speed of the former ice shelf tributaries was 26 % higher than before 1996. Along the west coast the average flow speeds of the glaciers increased by 41 %. However, the glaciers on the western Antarctic Peninsula revealed a strong spatial variability of the changes in ice dynamics. By applying a hierarchical cluster analysis, we show that this is associated with the geometric parameters of the individual glacier basins (hypsometric indexes, maximum surface elevation of the basin, flux gate to catchment size ratio). The heterogeneous spatial pattern of ice dynamic evolutions at the northern Antarctic Peninsula shows that temporally and spatially detailed observations as well as further monitoring are necessary to fully understand glacier change in regions with such strong topographic and climatic variances.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in glacier dynamics in the northern Antarctic Peninsula since 1985

Seehaus

Cook

Silva³

et al. 2018

The Cryosphere

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show abstract

“…Glaciers flowing into these retreating ice shelves have primarily responded with ice-flow acceleration and thinning. Wordie Ice Shelf on the west coast of the AP, has experienced a major area reduction from 1926 km 2 in 1966 (Wendt et al 2010) to less than 55 km 2 in year 2012 (Fig. 2).…”

Section: Introductionmentioning

confidence: 99%

Recent glacier changes in southern Chile and in the Antartic Peninsula

Rivera¹,

Bown²,

Wendt³

et al. 2012

Anales Instituto Patagonia (Chile)

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“…1c), and hence potentially vulnerable to marine ice sheet instability, the acceleration and dynamic thinning of the FGL may indicate the onset of unstable rapid grounding line retreat Walker and Gardner, 2017;Zhao et al, 2017). The speedup of the FGL before 2008 was originally assumed to be a direct response to the loss of 70 buttressing due to the ice shelf collapse (Rignot et al, 2005;Wendt et al, 2010). Recent studies have suggested that the recent speedup and retreat could be a direct response to oceanic forcing Walker and Gardner, 2017).…”

mentioning

confidence: 99%