Transactions of the Institute of British Geographers

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Remote Sensing And Image Interpretation

Glacial melting in the Tibetan Plateau affects the water resources of millions of people. This study finds that—partly owing to changes in atmospheric circulations and precipitation patterns—the most intensive glacier shrinkage is in the Himalayan region, whereas glacial retreat in the Pamir Plateau region is less apparent.

Different glacier status with atmospheric circulations in Tibetan Plateau and surroundings

http://ruby.fgcu.edu/courses/twimberley/envirophilo/wanner.pdf

Mid- to Late Holocene climate change: an overview

Data Reduction And Error Analysis For The Physical Sciences

Nature provide deposits with a structure and properties resembling those of man-made concrete. A tillite at Mt. Feather, McMurdo Dry Valleys, Transantarctic Mountains, Antarctica, is such a deposit. This ancient glacial deposit is of considerable importance to the early glacial history of the Antarctic Ice Sheet. The power of stereological analysis for an objective determination of the preferred direction of small clasts (⩽5 mm) was investigated in sediment samples from this deposit. Orthogonal sets of vertical thin sections were therefore subjected to a directed secants analysis. The operations were executed in an automated set-up and manually. The roses of intersections were analysed for preferred orientation, the results of which were combined to yield the tilt angle of the clasts. The preferred orientation signal is weak. As a result, in the automated set-up this signal is camouflaged by the effect of digitisation, hampering the assessment of a reliable estimate for the preferred orientation. The manual procedure, although basically more time-consuming, is more accurate and should be preferred, especially in the case of weak signal characterisation, as met in the present situation.

Image analysis of `natural' concrete samples by automated and manual procedures

The robustness of a simple flow-line model has been tested against new data from Storglaciaren. The model appears robust for given subglacial geometry. A realistic longitudinal profile and acceptab...

The Robustness of One-Dimensional, Time-Dependent, Ice-Flow Models: A Case Study from Storglaciären, Northern Sweden

In low relief Precambrian gneiss terrain in eastern Sweden, abraded bedrock surfaces were ripped apart by the Fennoscandian Ice Sheet. The resultant boulder spreads are covers of large, angular bou...

https://www.tandfonline.com/doi/pdf/10.1080/04353676.2020.1774244

Glacial ripping: geomorphological evidence from Sweden for a new process of glacial erosion

Glacial erosional features were studied in detail at three locations in the southcentral Queen Elizabeth Islands, Canada. Numerous striated bedrock outcrops, indicating ice flowing from the sea onto the coast, were discovered on BaillieHamilton Island, off the west coast of northern Devon Island. The consistency of obtained ice-flow directions indicates that thick, wet-based ice overrode the >200m-high island from northwest, west-northwest, and northeast, without topographic deflection. We conclude that this ice also flowed across the >300 m deep Queens and Wellington channels bordering Baillie-Hamilton Island. A similar conclusion was derived from striated bedrock outcrops on the northeast coast of North Kent Island, positioned between Devon and Ellesmere islands. Ice flowing from the northwest obliquely across Baillie-Hamilton and North Kent Islands, and from the northeast across Baillie-Hamilton Island, could not have emanated from local ice domes. Instead, these results are consistent with a large ice sheet covering the central and southern Queen Elizabeth Islands with an ice spreading center in the Norwegian Bay region. The timing of these events remains uncertain, but the degree of weathering of the striated outcrops indicates that both northwest and northeast ice-flow directions could be of late Wisconsinan age.

Field Evidence for Wet-based Ice Sheet Erosion from the South-central Queen Elizabeth Islands, Northwest Territories, Canada

The Liard Lobe formed a part of the northeastern sector of the Cordilleran Ice Sheet and drained ice from accumulation areas in the Selwyn, Pelly, Cassiar and Skeena mountains. This study reconstru ...

Lateglacial ice dynamics of the Cordilleran Ice Sheet in northern British Columbia and southern Yukon Territory : retreat pattern of the Liard Lobe reconstructed from the glacial landform record

Arjen P. Stroeven

Papers

Image analysis of `natural' concrete samples by automated and manual procedures

The Robustness of One-Dimensional, Time-Dependent, Ice-Flow Models: A Case Study from Storglaciären, Northern Sweden

Glacial ripping: geomorphological evidence from Sweden for a new process of glacial erosion

Field Evidence for Wet-based Ice Sheet Erosion from the South-central Queen Elizabeth Islands, Northwest Territories, Canada

Lateglacial ice dynamics of the Cordilleran Ice Sheet in northern British Columbia and southern Yukon Territory : retreat pattern of the Liard Lobe reconstructed from the glacial landform record