Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Tidewater glaciers"”.
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Numerical Modelling of Sediment Delivery from Tidewater Glaciers to the Marine Environment
… developed to simulate marine sedimentation from tidewater glaciers for the dominant transport processes of icebergrafting and glacial meltwater plumes. Icebergs calved from tidewater glaciers contain sediment, which is released as the icebergs melt. The SedBerg Model utilises Monte Carlo based …
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Inferring subglacial hydrology from investigations of supraglacial lake drainages and meltwater plumes at Store Glacier, West Greenland
… ice loss comes from dynamic ice loss from tidewater glaciers. Tidewater glaciers each have unique subglacial drainage systems and discharge meltwater into adjacent fjords differently. However, studies of the subglacial hydrology of individual tidewater glaciers have been limited, largely …
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Flow Characteristics, Setting, and Basal Boundary Condition of North Greenland Outlet Glaciers
… change. The contribution to sea level rise from tidewater glaciers is also spatially variable across the ice sheet, and observations reveal their contrasting behaviour at a regional scale. Whilst ice-ocean interaction may explain their dynamics in the south of Greenland, the warm subtropical …
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Characterising Sikussak and Other Forms of Ice Melange in Greenland Fjords
… greater impact on the sensitive terminal zone of tidewater glaciers than previously considered. This study aims to characterise pro-glacial sikussak and melange structures and their importance at the calving front of tidewater terminating glaciers using a dataset of 13 glaciers around the …
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South-east Greenland Ice Sheet short term response to environmental conditions
… for tracking the calving margin positions of tidewater glaciers from MODIS imagery was developed, allowing for the recording of high temporal resolution change over 24 glaciers. Results compared well to those of other studies which have been limited in either temporal or spatial resolution by …
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Glaciological investigations in east greenland using digital landsat imagery
… and snowline elevations were determined for 74 tidewater glaciers in the study area, and turbid meltwater plumes were identified. A method of correcting digital Landsat MSS data for the effects of atmospheric haze has been developed and tested. The method consists of subtracting the radiance …
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The future of Narsap Sermia: Documenting the retreat of a tidewater glacier in Southwest Greenland
The behaviour of Greenland’s tidewater glaciers is crucial for the understanding of the Greenland Ice Sheet. The retreat of those marine-terminating glaciers has far-reaching implications, impacting not only the regional hydrography but also the diverse fjord ecosystems. Here, this study …
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Late Quaternary ice-ocean interactions in central West Greenland
… acceleration, thinning and retreat of major tidewater glaciers in Greenland and Antarctica during the past two decades demonstrate the potential for ice sheets to respond to climate change much faster than previously assumed. One approach to understanding the role of atmospheric and oceanic …
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The Winds of Change: The effects of katabatic winds on fjord circulation, sea-ice export and glacier stability at Sermilik Fjord and Helheim Glacier
… implications. In period of rapidly retreating tidewater glaciers, katabatic winds are known to aid retreat indirectly, through inducing warm Atlantic origin water influx into the fjord, and directly via the removal of the ice melange in front of the glacier terminus. Using ERA5 reanalysis data, …
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Late Devensian ice sheet dynamics and the deglaciation of the Hebridean shelf, western Scotland, UK
… from a coherent ice-sheet to separate fjord tidewater glaciers, and iii) stabilisation at the transition from tidewater to land-based ice margins. Between 21 and 15 ka, fine sediments transported by meltwater plumes were the product of erosion of Neoproterozoic basement, while the coarse …
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Submarine landforms and past ice flow in the Krossfjorden system, northwest Svalbard
… about 100 years ago. These advances of the five tidewater glaciers in the Krossfjorden system varied from 2.3 to 5 km, with retreat rates of about 30 to 40 m a-1 from 1910 to 1966 and 10 to 45 m a-1 from 1966 to the present. This variation in retreat rate is attributed to local differences in …
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Investigating North Greenland ice shelves and their response to warming climate
… to the ocean through exerting a back stress on glaciers which would otherwise be free to accelerate, thin, and increase output of mass to the ocean in response to a warming climate. This study quantified changes to ice shelf areas in North Greenland between 1995 and 2016 with the aim of …
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Palaeoceanographic conditions and palaeoproductivity changes from the sub-Antarctic island South Georgia since the late deglacial, using marine micropalaeontology and geochemistry
… when sea-ice associated diatoms increased and tidewater glaciers expanded. The Holocene climate evolution seems to show three phases. Early Holocene SST cooling between 10 and 8.2 cal. kyr BP is attributed to Antarctic meltwater input and the poleward migration of the SWW. This was followed by …
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A Glacial Sedimentary System in Northwest Spitzbergen
… lakes in Signedalen, fed by three small cirque glaciers. Six further cores were taken from the fjord inlet, Signehamna, into which meltwater from the linked glacier-fed lakes and a further two glaciers drain. Signehamna drains into Lilliehookfjorden, which with Mollerfjorden, combines to form …