Enthalpy balance theory unifies diverse glacier surge behaviour

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Summary: This study examines glacier surges in the Tuanjie Peak region of the Qilian Mountains using optical images and multi-source DEMs. The researchers identify several confirmed and likely surge-type glaciers and analyze changes in surface velocity, morphology, and elevation. The findings suggest a correlation between surge dynamics and glacial hydrology, with the possibility of increased glacier instability in the region due to regional warming trends.

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Summary: Despite the existence of various glacier surging models, the observed behavior of surging glaciers does not fit into distinct categories, suggesting the presence of a universal mechanism driving all surges. Two different approaches, one through basal drag and the other through enthalpy, although differing in perspective, are not mutually exclusive and may complement each other. A framework incorporating both approaches would involve mechanics of basal drag describing ice flow velocity and surge propagation as a function of forcing by conditions at the glacier bed, modulated through the unified measure of enthalpy.

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Surging glaciers in Scotland

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From high friction zone to frontal collapse: dynamics of an ongoing tidewater glacier surge, Negribreen, Svalbard

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Dilation of subglacial sediment governs incipient surge motion in glaciers with deformable beds

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Dynamic vulnerability revealed in the collapse of an Arctic tidewater glacier

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Mass and enthalpy budget evolution during the surge of a polythermal glacier: a test of theory

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Basal dynamics of Kronebreen, a fast-flowing tidewater glacier in Svalbard: non-local spatio-temporal response to water input

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Geometric evolution of the Horcones Inferior Glacier (Mount Aconcagua, Central Andes) during the 2002-2006 surge

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Climatic and geometric controls on the global distribution of surge-type glaciers: implications for a unifying model of surging

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Slow surge of Trapridge Glacier, Yukon territory, Canada

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Variegated Glacier, Alaska, USA: a century of surges

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Is there a single surge mechanism? Contrasts in dynamics between glacier surges in Svalbard and other regions

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Thermally controlled glacier surging

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Enthalpy balance theory unifies diverse glacier surge behaviour

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