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Carotenoid diversity in novel Hymenobacter strains isolated from Victoria Upper Glacier, Antarctica, and implications for the evolution of microbial carotenoid biosynthesisKlassen, Jonathan Lee. January 2009 (has links)
Thesis (Ph. D.)--University of Alberta, 2009. / Title from pdf file main screen (viewed on Dec. 24, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Microbiology and Cell Biotechnology, Department of Biological Sciences, University of Alberta." Includes bibliographical references.
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Late Holocene climate change and calving glacier fluctuations along the southwestern margin of the Stikine Icefield, Alaska /Viens, Robert J. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 121-129).
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Distribution of patterned ground and surficial deposits on a debris-covered glacier surface in Mullins Valley and Upper Beacon Valley, Antarctica /Lorrey, Andrew M., January 2002 (has links)
Thesis (M.S.) in Geological Sciences--University of Maine, 2002. / Includes vita. Includes bibliographical references (leaves 114-119).
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Can a Little Ice Age climate signal be detected in the southern Alps of New Zealand? /Black, Jessica L., January 2001 (has links)
Thesis (M.S.) in Quaternary and Climate Studies--University of Maine, 2001. / Includes vita. Includes bibliographical references (leaves 154-160).
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Offshore records of ice extent and deglaciation, Loch Linnhe, western ScotlandMcIntyre, Kate Louise January 2012 (has links)
No description available.
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Glacial limits, sea-level changes and vegetational development in part of Wester RossRobinson, Mary January 1977 (has links)
The area studied is part of Wester Ross, north-west Scotland, and includes the Applecross Peninsula and the land to the east between Strathcarron and Glen Torridon. Mapping of glacial landforms involved study of aerial photographs and subsequent field work. Evidence was found for the existence of two ice caps and five separate coire glaciers during the Loch Lomond Readvance, their various termini being represented today by clear lateral and end moraines at fourteen out of twenty-five locations. In nine cases, multiple lateral and/or end moraines suggest fluctuation of these ice margins during the Stadial maximum. An earlier stage of glaciation not related to the Late-Devensian ice-sheet maximum is represented by a single moraine and glacial striae. It is believed that this substage probably occurred between 18,000 and 14,000 years ago. Former sea-level changes were investigated by accurate mapping and instrumental levelling of raised coastal features. Three major periods of formation were identified :- 1. A pre-glacial or interglacial stage, evidenced by a highlevel rock platform at 32 to 37 m O.D.; 2. Raised beaches and deltas lying between 21 and 28 m O.D. relating to a period of very early Lateglacial deglaciation; 3. Postglacial features lying below about 10 m O.D. Pollen analysis of core sequences from two sites helped confirm the Loch Lomond Readvance age of the end moraines in Strath a' Bhathaich and to elucidate the history of vegetational development in the area between ca. 13,000 and 9,000 B.P. The Lateglacial pollen diagram indicates early development of a treeless Empetrum- dominated landscape that reverted during the Stadial to tundra-like conditions with a floristically-poor, open vegetation. Both Postglacial diagrams indicate a rapid recovery in early Postglacial times, with the return of pioneer species shortly superceded by a closed vegetation, and then by immigration of birch trees, and the establishment of a mixed birch-hazel woodland.
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Frontal processes on tidewater glaciersO'Leary, Martin Eugene William January 2012 (has links)
No description available.
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The Inugsuin glacier : a mass budget study.Bridge, Christopher William. January 1966 (has links)
The year 1965 marked the beginning of the International Hydrological Decade. This project, covering the next tan years, has as its major conoern an assessment of the water resource of the earth. At present, it is estimated that some 21.4 million km.^3 of the world's water resouree is locked in ice or permanent snow. This represents approximately 9% of all fresh water on the earth or in the ataosphere. The estimates, of course, vary widely from author to author, but in any case the position of snow and ice in the fresh water balance of the globe is anything but negligible. Clearly the International Hydrological Decade must assess this quantity in some detail. To this end, many nations have undertaken the study of the mass budgets of selected glaciers and ice sheets vithin their boundaries. [...]
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The response of Ka Roimata o Hine Hukatere Franz Josef Glacier to climate changeAnderson, Brian Michael January 2003 (has links)
In the past century global climate warming has led to widespread glacier recession, which in turn has made
a significant contribution to eustatic sea level rise. In the coming century, warming is projected to continue
and small glacier melt will make a further contribution to sea level rise. In the monitoring of global glacier
change and prediction of the response of glacier to climate change, the few well-studied Southern
Hemisphere glaciers have an important role to play in elucidating global climate linkages, both in the
information that they have left on past climate and glacier change, and the information the provide on
future changes to the cryosphere.
Franz Josef Glacier, with the best record of terminus position in the Southern Hemisphere, has an important
place in assessing global climate and glacier change. The aim of this thesis is examine the response of
Franz Josef Glacier to climate change. This goal is achieved through the application of coupled mass
balance and ice-flow models, verified with an extensive set of field measurements.
A range of previous studies have attempted to understand the linkages between climate and the advance
and retreat of the glacier. Methods of examining the response of the glacier have progressed from simple
correlations of climate variables and terminus position, to coupled mass balance - ice-flow models. Despite
the large amount written about the glacier, there have been few direct measurements of ice velocity, almost
a complete lack of mass balance measurements and no measurements of ice thickness. Without these
measurements it is difficult to have confidence in the output of the models. A comparison of the output of
these models indicates a wide range of predicted mass balance and ice velocity, the two essential
components of glacier response to climate change.
The programme of field measurement indicates that Franz Josef Glacier has an extremely high mass
turnover. Ablation at the terminus is more than 20 m/a w.e. and accumulation in the névé up to 7 m/a w.e.
A degree-day mass balance model is able to simulate these measurements, but measured mass balance at
the same elevation varies significantly, indicating that the assumption that the only spatial variation of mass
balance is with elevation may not be valid here. Ice velocity reaches 2.5 m/day, which is high for a midlatitude
glacier. Temporal variations in velocity measurements indicate that basal sliding occurs year round
with little seasonal variation, and a greater sliding velocity on the glacier tongue than in the accumulation
area. An ice velocity model tuned to the ice velocity measurements confirms this pattern of sliding velocity.
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The coupled mass balance and ice-flow simulates the overall 20th century glacier retreat, but does not
simulate the terminus response well, a result of the mass balance model not producing accurate results for
the period 1894-1940. The model, when run for a short period of time into the future, indicates that glacier
response is independent of climate for a period of 5 years, and that Franz Josef Glacier will almost certainly
retreat a further 1 km in the next 5 years. Longer term predictions are dependent on climate change
scenarios, such that by 2100 the Franz Josef Glacier could be anywhere from a size similar to the present to
two small glaciers perched on the highest peaks. The mean scenario indicates that by 2100 the glacier will
have lost 20% of its volume and retreated 4 km to terminate near the present day Almer Glacier.
The possibly significant recession of the Franz Josef Glacier will have an impact on the local community
and economy with recreation and tourism on the glacier becoming much more difficult. While the results of
this study are particular to Franz Josef Glacier, they provide information on how other small glaciers
respond to climate change.
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A comparison of the landforms and sedimentary sequences produced by surging and non-surging glaciers in IcelandSharp, Martin January 1982 (has links)
No description available.
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