A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology
Permafrost underlies 50% of Canada’s terrain and underlies 24% of the Earth’s total land area. It is a major driving force in the generation and evolution of patterned ground landforms such as polygons, stone circles, mud boils, and stripes, etc. that are seen on both the surface of the Earth and Ma...
Main Author: | |
---|---|
Format: | Text |
Language: | English |
Published: |
Scholarship@Western
2020
|
Subjects: | |
Online Access: | https://ir.lib.uwo.ca/etd/7528 https://ir.lib.uwo.ca/context/etd/article/9916/viewcontent/20201221_A_Periglacial_Landsystem_Analysis_in_the_Canadian_High_Arctic___A_Tool_for_Planetary_Geomorphology.pdf |
id |
ftunivwestonta:oai:ir.lib.uwo.ca:etd-9916 |
---|---|
record_format |
openpolar |
spelling |
ftunivwestonta:oai:ir.lib.uwo.ca:etd-9916 2023-10-01T03:53:42+02:00 A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology Andres, Chimira Nicole 2020-10-08T20:00:00Z application/pdf https://ir.lib.uwo.ca/etd/7528 https://ir.lib.uwo.ca/context/etd/article/9916/viewcontent/20201221_A_Periglacial_Landsystem_Analysis_in_the_Canadian_High_Arctic___A_Tool_for_Planetary_Geomorphology.pdf English eng Scholarship@Western https://ir.lib.uwo.ca/etd/7528 https://ir.lib.uwo.ca/context/etd/article/9916/viewcontent/20201221_A_Periglacial_Landsystem_Analysis_in_the_Canadian_High_Arctic___A_Tool_for_Planetary_Geomorphology.pdf Electronic Thesis and Dissertation Repository 3D-ground penetrating radar (3D-GPR) ice-wedge polygons patterned ground periglacial Light Detection and Ranging (LiDAR) Arctic Geology Geomorphology Geophysics and Seismology Glaciology Natural Resources and Conservation Sedimentology text 2020 ftunivwestonta 2023-09-03T07:34:25Z Permafrost underlies 50% of Canada’s terrain and underlies 24% of the Earth’s total land area. It is a major driving force in the generation and evolution of patterned ground landforms such as polygons, stone circles, mud boils, and stripes, etc. that are seen on both the surface of the Earth and Mars, specifically in periglacial domains. The distribution of subsurface ice in these landforms (i.e. polygonal terrain) on Earth is a key constraint on past climate and process-form relationships in high arctic and periglacial regions. These landforms also have the potential of storing ice in the subsurface meaning that the volumetric concentration of buried ice can provide information about the processes that led to its deposition. In this research, two Canadian High Arctic study sites were analyzed: Strand Fiord, Axel Heiberg Island (ᐅᒥᖕᒪᑦ ᓄᓈᑦ, Umingmat Nunaat) and Haughton River Valley, Devon Island (ᑕᓪᓗᕈᑎᑦ, Tallurutit). Methods in this research involved the utilization of (1) ground penetrating radar (GPR) for 3D ice-wedge volume estimation, (2) Light Detection and Ranging (LiDAR) for hyper-resolution digital elevation model (DEM) generation and quantifying the degree of spatial sorting in patterned ground using Kernel Density Estimation (KDE), (3) sedimentology for grain size and facies association in order to infer depositional environment, (4) fieldwork notes and measurement, and (5) drone and aerial photos for 3D photogrammetry models. In Strand Fiord, ice-wedge geometry and volume were calculated to be asymmetric and 43.28 m3 respectively in a 25 m x 25 m grid within the study area; ice-wedge polygons were associated with areas of active transition (i.e. secondary/tertiary polygons that have experienced multiple episodes of cracking). In the Haughton River Valley, patterned ground spatial distribution and sorting were related to the local periglacial region such as microtopography, slope and lithology wherein fine (clay, sand) sediments were often associated with the formation of frost-shattered nets, ... Text Arctic Axel Heiberg Island Devon Island Ice permafrost wedge* The University of Western Ontario: Scholarship@Western Arctic Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Haughton River ENVELOPE(-88.980,-88.980,75.447,75.447) Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Strand Fiord ENVELOPE(-91.468,-91.468,79.185,79.185) |
institution |
Open Polar |
collection |
The University of Western Ontario: Scholarship@Western |
op_collection_id |
ftunivwestonta |
language |
English |
topic |
3D-ground penetrating radar (3D-GPR) ice-wedge polygons patterned ground periglacial Light Detection and Ranging (LiDAR) Arctic Geology Geomorphology Geophysics and Seismology Glaciology Natural Resources and Conservation Sedimentology |
spellingShingle |
3D-ground penetrating radar (3D-GPR) ice-wedge polygons patterned ground periglacial Light Detection and Ranging (LiDAR) Arctic Geology Geomorphology Geophysics and Seismology Glaciology Natural Resources and Conservation Sedimentology Andres, Chimira Nicole A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
topic_facet |
3D-ground penetrating radar (3D-GPR) ice-wedge polygons patterned ground periglacial Light Detection and Ranging (LiDAR) Arctic Geology Geomorphology Geophysics and Seismology Glaciology Natural Resources and Conservation Sedimentology |
description |
Permafrost underlies 50% of Canada’s terrain and underlies 24% of the Earth’s total land area. It is a major driving force in the generation and evolution of patterned ground landforms such as polygons, stone circles, mud boils, and stripes, etc. that are seen on both the surface of the Earth and Mars, specifically in periglacial domains. The distribution of subsurface ice in these landforms (i.e. polygonal terrain) on Earth is a key constraint on past climate and process-form relationships in high arctic and periglacial regions. These landforms also have the potential of storing ice in the subsurface meaning that the volumetric concentration of buried ice can provide information about the processes that led to its deposition. In this research, two Canadian High Arctic study sites were analyzed: Strand Fiord, Axel Heiberg Island (ᐅᒥᖕᒪᑦ ᓄᓈᑦ, Umingmat Nunaat) and Haughton River Valley, Devon Island (ᑕᓪᓗᕈᑎᑦ, Tallurutit). Methods in this research involved the utilization of (1) ground penetrating radar (GPR) for 3D ice-wedge volume estimation, (2) Light Detection and Ranging (LiDAR) for hyper-resolution digital elevation model (DEM) generation and quantifying the degree of spatial sorting in patterned ground using Kernel Density Estimation (KDE), (3) sedimentology for grain size and facies association in order to infer depositional environment, (4) fieldwork notes and measurement, and (5) drone and aerial photos for 3D photogrammetry models. In Strand Fiord, ice-wedge geometry and volume were calculated to be asymmetric and 43.28 m3 respectively in a 25 m x 25 m grid within the study area; ice-wedge polygons were associated with areas of active transition (i.e. secondary/tertiary polygons that have experienced multiple episodes of cracking). In the Haughton River Valley, patterned ground spatial distribution and sorting were related to the local periglacial region such as microtopography, slope and lithology wherein fine (clay, sand) sediments were often associated with the formation of frost-shattered nets, ... |
format |
Text |
author |
Andres, Chimira Nicole |
author_facet |
Andres, Chimira Nicole |
author_sort |
Andres, Chimira Nicole |
title |
A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
title_short |
A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
title_full |
A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
title_fullStr |
A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
title_full_unstemmed |
A Periglacial Landsystem Analysis in the Canadian High Arctic: A Tool for Planetary Geomorphology |
title_sort |
periglacial landsystem analysis in the canadian high arctic: a tool for planetary geomorphology |
publisher |
Scholarship@Western |
publishDate |
2020 |
url |
https://ir.lib.uwo.ca/etd/7528 https://ir.lib.uwo.ca/context/etd/article/9916/viewcontent/20201221_A_Periglacial_Landsystem_Analysis_in_the_Canadian_High_Arctic___A_Tool_for_Planetary_Geomorphology.pdf |
long_lat |
ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(-88.000,-88.000,75.252,75.252) ENVELOPE(-88.980,-88.980,75.447,75.447) ENVELOPE(13.964,13.964,66.424,66.424) ENVELOPE(-91.468,-91.468,79.185,79.185) |
geographic |
Arctic Axel Heiberg Island Devon Island Haughton River Heiberg Strand Fiord |
geographic_facet |
Arctic Axel Heiberg Island Devon Island Haughton River Heiberg Strand Fiord |
genre |
Arctic Axel Heiberg Island Devon Island Ice permafrost wedge* |
genre_facet |
Arctic Axel Heiberg Island Devon Island Ice permafrost wedge* |
op_source |
Electronic Thesis and Dissertation Repository |
op_relation |
https://ir.lib.uwo.ca/etd/7528 https://ir.lib.uwo.ca/context/etd/article/9916/viewcontent/20201221_A_Periglacial_Landsystem_Analysis_in_the_Canadian_High_Arctic___A_Tool_for_Planetary_Geomorphology.pdf |
_version_ |
1778520506847199232 |