Results 91 to 100 of about 426,465 (213)

Glaciers and why they surge

open access: yesEos, Transactions American Geophysical Union, 1984
Researchers studying southern Alaska's Variegated Glacier believe they have found an explanation for why the 24‐km‐long ice mass, like other "surging" glaciers, periodically speeds up in its movement down valley. The surges, they propose, have to do with increases in water pressure beneath the glacier— the result of inhibited drainage at the base of ...
openaire   +1 more source

WAVES OF ACCELERATED MOTION IN A GLACIER APPROACHING SURGE: THE MINI-SURGES OF

open access: yes, 2014
. Periods of dramatically accelerated motion, in which the flow velocity increases suddenly from about 55 cm/d to a peak of 100-300 cm/d and then decreases gradually over the course of a day, occurred repeatedly during June and July 1978-81 in Variegated
Variegated Glacier, Hermann Engelhardt
core  

Critical constraints to ecological buffering in a rapidly changing Arctic: A long‐term seabird study

open access: yesJournal of Animal Ecology, EarlyView.
Drawing on two decades of research in East Greenland, this study shows that little auks, key seabird indicators of Arctic ecosystem health, can adapt to rapid environmental change through behavioural flexibility. However, increasing storms and mercury pollution are pushing resilience to its limits, providing an early warning of broader Arctic ...
David Grémillet   +3 more
wiley   +1 more source

A surge of North Gasherbrum Glacier, Karakoram, China

open access: yes, 2011
Between 2003 and 2007, North Gasherbrum Glacier on the northeastern slope of the Karakoram mountains in Asia underwent a dramatic acceleration, during which a velocity wave propagated down the glacier.
Andrew C. Fowler   +3 more
core   +1 more source

The character, structure and origin of the basal ice layer of a surge-type glacier

open access: yes, 1994
The basal ice layer of surge-type Variegated Glacier, Alaska, appears to have formed by a combination of (i) open-system freezing of subglacial meltwaters over both rigid and unconsolidated substrates; (ii) apron over-riding during surge-induced glacier ...
Wendy Lawson   +3 more
core   +2 more sources

Topographic and hydrological controls on partial and full surges of Little Kluane Glacier, Yukon

open access: yesJournal of Glaciology
We demonstrate that a ~20 km long valley glacier in the St. Elias Mountains, Yukon, can experience both partial and full surges, likely controlled by the presence of a topographic constriction and the formation and drainage of supraglacial lakes.
Brittany Main   +6 more
doaj   +1 more source

125 years of exploration and research at Gough's Cave (Somerset, UK) 125 ans d'exploration et de recherches à Gough's Cave (Somerset, Royaume‐Uni)

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Our understanding of the recolonization of northwest Europe in the period leading up to the Lateglacial Interstadial relies heavily on discoveries from Gough's Cave (Somerset, UK). Gough's Cave is the richest Late Upper Palaeolithic site in the British Isles, yielding an exceptional array of human remains, stone and organic artefacts, and butchered ...
Silvia M. Bello   +2 more
wiley   +1 more source

Global detection of glacier surges from surface velocities, elevation change and SAR backscatter data between 2000 and 2024: a test of surge mechanism theories

open access: yesJournal of Glaciology
The systematic investigation of individual glacier surges across a large statistical sample is key to a better understanding of surge mechanisms. This study introduces a consistent framework for identifying glacier surges from diverse remotely sensed ...
Gregoire Guillet   +5 more
doaj   +1 more source

THE URBANOLOGISTS COME TO TOWN: Professional Life and Work in the Urban Solutions Industry

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
Abstract This article charts the upsurge of an eclectic global community of professionals new to the field of urban policy and governance, animated by playful and celebratory attitudes towards cities and urbanization: the urbanologists. It contributes to debates in critical urban theory and critical ethnographies of technology to problematize ...
Rachel Bok
wiley   +1 more source

Downwasting and supraglacial lake evolution on the debris-covered Ngozumpa Glacier, Khumbu Himal, Nepal [PDF]

open access: yes, 2015
In recent decades, the downwasting of several debris-covered glaciers in the Himalaya has led to the formation of large and potentially hazardous moraine- dammed lakes.
Hands, Kathryn Ann
core   +1 more source

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