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Canadian Journal of Earth Sciences, 1969
Propagation of glacier surges has been discussed in terms of stresses acting in the three major zones of the surge. The steeply sloping front of a surge appears sufficient to explain the thickening of a glacier and the rise in velocity of ice motion which takes place across this zone in terms of accepted stress–strain rate data for ice. Explanation of
G. de Q. Robin, P. Barnes
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Propagation of glacier surges has been discussed in terms of stresses acting in the three major zones of the surge. The steeply sloping front of a surge appears sufficient to explain the thickening of a glacier and the rise in velocity of ice motion which takes place across this zone in terms of accepted stress–strain rate data for ice. Explanation of
G. de Q. Robin, P. Barnes
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Canadian Journal of Earth Sciences, 1969
Three types of instability leading to glacier surges have been suggested, namely stress instabilities, temperature instabilities, and water-film instabilities. Evidence of approximately equal volumes of ice being involved in repeated surges of the same glacier favors stress instabilities as the most likely cause. Since for a steady rate of discharge a
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Three types of instability leading to glacier surges have been suggested, namely stress instabilities, temperature instabilities, and water-film instabilities. Evidence of approximately equal volumes of ice being involved in repeated surges of the same glacier favors stress instabilities as the most likely cause. Since for a steady rate of discharge a
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Glacier surges and glacial disasters
Doklady Earth Sciences, 2017Based on complex analysis of the latest data, new conclusions have been reached about the features and causes of glacial disasters.
V. M. Kotlyakov +3 more
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Journal of Geophysical Research: Solid Earth, 1987
We propose a model of glacier flow that is capable of explaining temperate glacier surges. The laws of conservation of mass and momentum are supplemented by the prescription of a sliding law that gives the basal shear stress τ as a function of the basal velocity u and the effective pressure N. The effective drainage pressure N is determined by a simple
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We propose a model of glacier flow that is capable of explaining temperate glacier surges. The laws of conservation of mass and momentum are supplemented by the prescription of a sliding law that gives the basal shear stress τ as a function of the basal velocity u and the effective pressure N. The effective drainage pressure N is determined by a simple
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Characteristics of surge‐type glaciers
Journal of Geophysical Research: Solid Earth, 1986Glaciers can be divided into two classes according to their flow behavior: normal (relatively steady annually averaged flow rate) and surge‐type (pronounced cyclic flow variations having a typical periodicity of 10–100 years). We have examined the population statistics of 2356 glaciers in the St.
Garry K. C. Clarke +3 more
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2013
The Karakoram is one of a relatively few mountain regions with high numbers of surge-type glaciers, subject to sudden, short-lived accelerations that transfer large volumes of ice down glacier. Some 55 surges have been identified since the 1860s involving 46 glaciers.
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The Karakoram is one of a relatively few mountain regions with high numbers of surge-type glaciers, subject to sudden, short-lived accelerations that transfer large volumes of ice down glacier. Some 55 surges have been identified since the 1860s involving 46 glaciers.
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Global warming and surging glaciers
UN Chronicle, 2012The Earth’s climate undergoes fluctuations and for the past thousand years has experienced periods of warming and cooling. In the seventeenth century, severe and long-standing winters, known as the Little Ice Age, recurred in the south of Europe. One can see frozen channels and snow-covered Holland in the paintings of famous Flemish artists.
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Glacier surges in West Spitsbergen
Canadian Journal of Earth Sciences, 1969Surges constitute a common form of glacier advance in Spitsbergen. The fastest movement observed is that of the Negri Glacier, with an advance of ~ 12 km in less than a year. Observations on the Finster-walder Glacier indicate that the ice flow is too small to maintain a steady-state slope.
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Some Hypotheses on Surging Glaciers
Geological Society of America Bulletin, 1968Glacier surges can result when an ice dam, which is above the equilibrium length of the glacier, breaks from the forces of the excess ice that builds up behind the dam. It is shown that the high velocities of flow of surging glaciers cannot be due to the normal pseudo-plastic flow of glacier ice.
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