A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog
This original research of seasonal thermodynamic and dynamic geomorphologic processes at the Boundary Ridge palsa bog near Schefferville, Quebec reports characteristic differences in heat flow (Q,), and resulting permafrost mass aggradation/degradation behavior, between a mature-phase palsa (Palsa A...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.130.2009 2023-05-15T16:37:13+02:00 A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog Near Schefferville Quebec David Alan Carlson O David Alan Carlson The Pennsylvania State University CiteSeerX Archives 2005 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.2009 http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.2009 http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf text 2005 ftciteseerx 2016-01-07T14:30:26Z This original research of seasonal thermodynamic and dynamic geomorphologic processes at the Boundary Ridge palsa bog near Schefferville, Quebec reports characteristic differences in heat flow (Q,), and resulting permafrost mass aggradation/degradation behavior, between a mature-phase palsa (Palsa A) and young-phase palsa (Palsa B). Quantitative analysis of September 1976-August 1977 thermal data indicates how changing palsa material characteristics and bog thermodynamics affect palsa geomorphology. Q, patterns for Palsa A show greater amplitude, and shorter active-layer heat loss duration, at its center than along its periphery. Basal active-layer ice aggradation was more evident in Palsa A than Palsa B. Although Palsa A experienced lesser Q, amplitudes than Palsa B, increased Q,, phase lag resulted in more heat loss and productive ice growth at depth. Palsas A and B experienced permafrost-zone isothermal conditions just below 0°C for seven to eight months of the year, interrupted only by the winter Text Ice palsa palsas permafrost Unknown |
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English |
description |
This original research of seasonal thermodynamic and dynamic geomorphologic processes at the Boundary Ridge palsa bog near Schefferville, Quebec reports characteristic differences in heat flow (Q,), and resulting permafrost mass aggradation/degradation behavior, between a mature-phase palsa (Palsa A) and young-phase palsa (Palsa B). Quantitative analysis of September 1976-August 1977 thermal data indicates how changing palsa material characteristics and bog thermodynamics affect palsa geomorphology. Q, patterns for Palsa A show greater amplitude, and shorter active-layer heat loss duration, at its center than along its periphery. Basal active-layer ice aggradation was more evident in Palsa A than Palsa B. Although Palsa A experienced lesser Q, amplitudes than Palsa B, increased Q,, phase lag resulted in more heat loss and productive ice growth at depth. Palsas A and B experienced permafrost-zone isothermal conditions just below 0°C for seven to eight months of the year, interrupted only by the winter |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Near Schefferville Quebec David Alan Carlson O David Alan Carlson |
spellingShingle |
Near Schefferville Quebec David Alan Carlson O David Alan Carlson A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
author_facet |
Near Schefferville Quebec David Alan Carlson O David Alan Carlson |
author_sort |
Near Schefferville Quebec |
title |
A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
title_short |
A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
title_full |
A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
title_fullStr |
A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
title_full_unstemmed |
A Dynamic Process Model of Palsa Genesis and Development based on Geomorphologic Investigations at the Boundary Ridge Palsa Bog |
title_sort |
dynamic process model of palsa genesis and development based on geomorphologic investigations at the boundary ridge palsa bog |
publishDate |
2005 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.2009 http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf |
genre |
Ice palsa palsas permafrost |
genre_facet |
Ice palsa palsas permafrost |
op_source |
http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.2009 http://digital.library.mcgill.ca/ethesis /theses/20-david_alan_carlson.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766027516666970112 |