Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range
I investigated active deep-seated gravitational slope deformation (DSGSD) near the Trans-Alaska Pipeline and Richardson Highway in the east-central Alaska Range, Alaska, USA. I documented the presence, spatial extent, and rates of DSGSD using field-geology methods and optical, SAR, and D-InSAR remot...
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ftsimonfu:oai:summit.sfu.ca:13795 2023-05-15T13:09:37+02:00 Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range Newman, Stephen Delmont 2013-09-03 http://summit.sfu.ca/item/13795 unknown etd8162 http://summit.sfu.ca/item/13795 Thesis 2013 ftsimonfu 2022-04-07T18:39:00Z I investigated active deep-seated gravitational slope deformation (DSGSD) near the Trans-Alaska Pipeline and Richardson Highway in the east-central Alaska Range, Alaska, USA. I documented the presence, spatial extent, and rates of DSGSD using field-geology methods and optical, SAR, and D-InSAR remote-sensing images. I also documented and mapped many of the morphological, geological, and structural characteristics of slopes undergoing DSGSD, and constructed conceptual numerical models to better understand potential deformation mechanisms. Results confirm that many large DSGSD slopes in the study area are actively deforming. Deformation rates range from less than a millimetre per month to more than ten centimetres per month, and are spatially and temporally varient within each slope. Deforming slopes are characterized by differential movement of kilometre-scale rock blocks. Recent climatic changes and strong seismic shaking, especially during the recent 2002 Denali Fault earthquake, have exacerbated ongoing deformation. Study-area DSGSDs should be considered capable of generating long-runout rock avalanches that could directly sever the Trans-Alaska Pipeline and Richardson Highway, or that could dam up valleys and lead to the buildup and catastrophic failure of landslide-dammed lakes capable of impacting said infrastructure. Thesis alaska range Alaska Summit - SFU Research Repository (Simon Fraser University) Sever ENVELOPE(166.083,166.083,62.917,62.917) |
institution |
Open Polar |
collection |
Summit - SFU Research Repository (Simon Fraser University) |
op_collection_id |
ftsimonfu |
language |
unknown |
description |
I investigated active deep-seated gravitational slope deformation (DSGSD) near the Trans-Alaska Pipeline and Richardson Highway in the east-central Alaska Range, Alaska, USA. I documented the presence, spatial extent, and rates of DSGSD using field-geology methods and optical, SAR, and D-InSAR remote-sensing images. I also documented and mapped many of the morphological, geological, and structural characteristics of slopes undergoing DSGSD, and constructed conceptual numerical models to better understand potential deformation mechanisms. Results confirm that many large DSGSD slopes in the study area are actively deforming. Deformation rates range from less than a millimetre per month to more than ten centimetres per month, and are spatially and temporally varient within each slope. Deforming slopes are characterized by differential movement of kilometre-scale rock blocks. Recent climatic changes and strong seismic shaking, especially during the recent 2002 Denali Fault earthquake, have exacerbated ongoing deformation. Study-area DSGSDs should be considered capable of generating long-runout rock avalanches that could directly sever the Trans-Alaska Pipeline and Richardson Highway, or that could dam up valleys and lead to the buildup and catastrophic failure of landslide-dammed lakes capable of impacting said infrastructure. |
format |
Thesis |
author |
Newman, Stephen Delmont |
spellingShingle |
Newman, Stephen Delmont Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
author_facet |
Newman, Stephen Delmont |
author_sort |
Newman, Stephen Delmont |
title |
Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
title_short |
Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
title_full |
Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
title_fullStr |
Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
title_full_unstemmed |
Deep-seated gravitational slope deformations near the Trans-Alaska Pipeline, east-central Alaska Range |
title_sort |
deep-seated gravitational slope deformations near the trans-alaska pipeline, east-central alaska range |
publishDate |
2013 |
url |
http://summit.sfu.ca/item/13795 |
long_lat |
ENVELOPE(166.083,166.083,62.917,62.917) |
geographic |
Sever |
geographic_facet |
Sever |
genre |
alaska range Alaska |
genre_facet |
alaska range Alaska |
op_relation |
etd8162 http://summit.sfu.ca/item/13795 |
_version_ |
1766190456750735360 |