An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery
Little is known about the presence, distribution, age, or activity of rock glaciers in the British Columbia Coast Mountains of western Canada. Reflecting debris accumulation and mass wasting under a periglacial climate, these rock glaciers describe a geomorphic response to permafrost regimes that ma...
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ftdatacite:10.6084/m9.figshare.6856538.v3 2023-05-15T16:37:41+02:00 An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery Charbonneau, Ansley A. Smith, Dan J. 2019 https://dx.doi.org/10.6084/m9.figshare.6856538.v3 https://tandf.figshare.com/articles/dataset/An_inventory_of_rock_glaciers_in_the_central_British_Columbia_Coast_Mountains_Canada_from_high_resolution_Google_Earth_imagery/6856538/3 unknown Taylor & Francis https://dx.doi.org/10.1080/15230430.2018.1489026 https://dx.doi.org/10.6084/m9.figshare.6856538 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified dataset Dataset 2019 ftdatacite https://doi.org/10.6084/m9.figshare.6856538.v3 https://doi.org/10.1080/15230430.2018.1489026 https://doi.org/10.6084/m9.figshare.6856538 2021-11-05T12:55:41Z Little is known about the presence, distribution, age, or activity of rock glaciers in the British Columbia Coast Mountains of western Canada. Reflecting debris accumulation and mass wasting under a periglacial climate, these rock glaciers describe a geomorphic response to permafrost regimes that may or may not presently exist. An inventory of rock glacier landforms in the eastern front ranges of the Coast Mountains, using high-resolution Google Earth imagery, documented 165 rock glaciers between lat. 50°10ʹ and 52°08ʹ N. The majority of these rock glaciers occur at sites positioned between 1,900 and 2,300 m above sea level, where rain shadow effects and continental air masses result in persistent dry, cold conditions. Morphology and field observation suggest that these features contain intact ice. The rock glaciers occupy predominately northwest- to northeast-facing slopes, with talus-derived rock glaciers largely restricted to north-facing slopes. Glacier-derived features outnumber talus-derived features by a ratio of 5:1. Several of the inventoried rock glaciers were located up valley from presumed Younger Dryas terminal moraines, indicating that they formed after 9390 BP. Dendrogeomorphological investigations at one rock glacier record contemporary activity that resulted in 1.3 cm/yr of frontal advance since AD 1674. This inventory is the first to document the presence of rock glaciers in the Coast Mountains and supports preliminary understandings of permafrost distribution in the southwestern Canadian Cordillera. Dataset Ice permafrost DataCite Metadata Store (German National Library of Science and Technology) British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified |
spellingShingle |
Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Charbonneau, Ansley A. Smith, Dan J. An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
topic_facet |
Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified |
description |
Little is known about the presence, distribution, age, or activity of rock glaciers in the British Columbia Coast Mountains of western Canada. Reflecting debris accumulation and mass wasting under a periglacial climate, these rock glaciers describe a geomorphic response to permafrost regimes that may or may not presently exist. An inventory of rock glacier landforms in the eastern front ranges of the Coast Mountains, using high-resolution Google Earth imagery, documented 165 rock glaciers between lat. 50°10ʹ and 52°08ʹ N. The majority of these rock glaciers occur at sites positioned between 1,900 and 2,300 m above sea level, where rain shadow effects and continental air masses result in persistent dry, cold conditions. Morphology and field observation suggest that these features contain intact ice. The rock glaciers occupy predominately northwest- to northeast-facing slopes, with talus-derived rock glaciers largely restricted to north-facing slopes. Glacier-derived features outnumber talus-derived features by a ratio of 5:1. Several of the inventoried rock glaciers were located up valley from presumed Younger Dryas terminal moraines, indicating that they formed after 9390 BP. Dendrogeomorphological investigations at one rock glacier record contemporary activity that resulted in 1.3 cm/yr of frontal advance since AD 1674. This inventory is the first to document the presence of rock glaciers in the Coast Mountains and supports preliminary understandings of permafrost distribution in the southwestern Canadian Cordillera. |
format |
Dataset |
author |
Charbonneau, Ansley A. Smith, Dan J. |
author_facet |
Charbonneau, Ansley A. Smith, Dan J. |
author_sort |
Charbonneau, Ansley A. |
title |
An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
title_short |
An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
title_full |
An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
title_fullStr |
An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
title_full_unstemmed |
An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery |
title_sort |
inventory of rock glaciers in the central british columbia coast mountains, canada, from high resolution google earth imagery |
publisher |
Taylor & Francis |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.6856538.v3 https://tandf.figshare.com/articles/dataset/An_inventory_of_rock_glaciers_in_the_central_British_Columbia_Coast_Mountains_Canada_from_high_resolution_Google_Earth_imagery/6856538/3 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
British Columbia Canada |
geographic_facet |
British Columbia Canada |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
https://dx.doi.org/10.1080/15230430.2018.1489026 https://dx.doi.org/10.6084/m9.figshare.6856538 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.6856538.v3 https://doi.org/10.1080/15230430.2018.1489026 https://doi.org/10.6084/m9.figshare.6856538 |
_version_ |
1766027993276219392 |