Tasman Glacier, New Zealand: 20th-century thinning and predicted calving retreat

Kirkbride, Martin P.; Warren, Charles R.

doi:10.1016/s0921-8181(99)00021-1

Cited by 132 publications

(155 citation statements)

References 26 publications

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“…A glacier with debris cover evolves differently from bare ice due to the fact that thick debris cover reduces ablation (Kirkbride and Warren, 1999). For this reason, elevation differences between t 1 and t 2 are significantly smaller at the debris-covered parts and show instant increase at the place where debris cover meets bare ice.…”

Section: Methodsmentioning

confidence: 99%

On the potential of very high-resolution repeat DEMs in glacial and periglacial environments

et al. 2010

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Abstract. The potential of high-resolution repeat DEMs was investigated for glaciological applications including periglacial features (e.g. rock glaciers). It was shown that glacier boundaries can be delineated using airborne LIDARDEMs as a primary data source and that information on debris cover extent could be extracted using multi-temporal DEMs. Problems and limitations are discussed, and accuracies quantified. Absolute deviations of airborne laser scanning (ALS) derived glacier boundaries from ground-truthed ones were below 4 m for 80% of the ground-truthed values. Overall, we estimated an accuracy of +/−1.5% of the glacier area for glaciers larger than 1 km 2 . The errors in the case of smaller glaciers did not exceed +/−5% of the glacier area. The use of repeat DEMs in order to obtain information on the extent, characteristics and activity of rock glaciers was investigated and discussed based on examples.

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Section: Methodsmentioning

confidence: 99%

On the potential of very high-resolution repeat DEMs in glacial and periglacial environments

et al. 2010

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“…We expected an increase in debris cover through a redistribution of debris from higher areas of thick debris (i.e. medial moraines) to lower areas of bare ice that rapidly melt ( Kirkbride and Warren, 1999). However, the up-glacier extent of the debris cover changed little while debriscovered termini retreated between 1993 and 2009, thus reducing the debris-covered area.…”

Section: Glacier Change By Typementioning

confidence: 99%

Glacier change of the Columbia Icefield, Canadian Rocky Mountains, 1919–2009

Tennant

Menounos

2013

J. Glaciol.

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“…They can thus have a positive mass balance with a restricted accumulation area, reach lower elevation and advance when neighboring bare-ice glaciers are retreating (Scherler et al, 2011;Deline et al, 2012;Carturan et al, 2013). The increase of debris thickness toward the glacier front can also reverse the ablation gradient, which usually induces a glacier surface flattening and limits the driving stress (Kirkbride and Warren, 1999;Benn et al, 2012). Thickness variations then become more pronounced than length variations for debris-covered tongues (Benn et al, 2003;Mayer et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Internal Structure and Current Evolution of Very Small Debris-Covered Glacier Systems Located in Alpine Permafrost Environments

Bosson

Lambiel

2016

Front. Earth Sci.

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This contribution explores the internal structure of very small debris-covered glacier systems located in permafrost environments and their current dynamical responses to short-term climatic variations. Three systems were investigated with electrical resistivity tomography and dGPS monitoring over a 3-year period. Five distinct sectors are highlighted in each system: firn and bare-ice glacier, debris-covered glacier, heavily debris-covered glacier of low activity, rock glacier and ice-free debris. Decimetric to metric movements, related to ice ablation, internal deformation and basal sliding affect the glacial zones, which are mainly active in summer. Conversely, surface lowering is close to zero (−0.04 m yr −1 ) in the rock glaciers. Here, a constant and slow internal deformation was observed (c. 0.2 m yr −1 ). Thus, these systems are affected by both direct and high magnitude responses and delayed and attenuated responses to climatic variations. This differential evolution appears mainly controlled by (1) the proportion of ice, debris and the presence of water in the ground, and (2) the thickness of the superficial debris layer.

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Tasman Glacier, New Zealand: 20th-century thinning and predicted calving retreat

Cited by 132 publications

References 26 publications

On the potential of very high-resolution repeat DEMs in glacial and periglacial environments

On the potential of very high-resolution repeat DEMs in glacial and periglacial environments

Glacier change of the Columbia Icefield, Canadian Rocky Mountains, 1919–2009

Internal Structure and Current Evolution of Very Small Debris-Covered Glacier Systems Located in Alpine Permafrost Environments

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