Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps
Abstract The composition of rock glaciers was sounded by a combination of conventional geophysical methods near the lower limit of mountain permafrost in the Swiss Alps. P‐wave velocity, direct current (DC) resistivity and year‐round ground surface temperatures were measured on 32 talus‐derived rock...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2006
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.550 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.550 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.550 |
id |
crwiley:10.1002/ppp.550 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.550 2024-06-02T08:08:00+00:00 Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps Ikeda, Atsushi 2006 http://dx.doi.org/10.1002/ppp.550 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.550 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.550 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 17, issue 1, page 35-48 ISSN 1045-6740 1099-1530 journal-article 2006 crwiley https://doi.org/10.1002/ppp.550 2024-05-03T11:43:30Z Abstract The composition of rock glaciers was sounded by a combination of conventional geophysical methods near the lower limit of mountain permafrost in the Swiss Alps. P‐wave velocity, direct current (DC) resistivity and year‐round ground surface temperatures were measured on 32 talus‐derived rock glaciers. Subsurface P‐wave velocities differ significantly between non‐vegetated (probably active/inactive) rock glaciers and vegetated (probably relict) rock glaciers. DC resistivities reflect structural differences in the rock glaciers (e.g. bouldery or pebbly, ice‐cemented or highly ice‐rich) rather than thermal differences (i.e. frozen or unfrozen). The combination of these methods provides reliable thermal and structural information on subsurface deposits. In addition, mean annual ground surface temperatures are equally good indicators of the distribution of permafrost as bottom temperatures of snow. Copyright © 2006 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 17 1 35 48 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The composition of rock glaciers was sounded by a combination of conventional geophysical methods near the lower limit of mountain permafrost in the Swiss Alps. P‐wave velocity, direct current (DC) resistivity and year‐round ground surface temperatures were measured on 32 talus‐derived rock glaciers. Subsurface P‐wave velocities differ significantly between non‐vegetated (probably active/inactive) rock glaciers and vegetated (probably relict) rock glaciers. DC resistivities reflect structural differences in the rock glaciers (e.g. bouldery or pebbly, ice‐cemented or highly ice‐rich) rather than thermal differences (i.e. frozen or unfrozen). The combination of these methods provides reliable thermal and structural information on subsurface deposits. In addition, mean annual ground surface temperatures are equally good indicators of the distribution of permafrost as bottom temperatures of snow. Copyright © 2006 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Ikeda, Atsushi |
spellingShingle |
Ikeda, Atsushi Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
author_facet |
Ikeda, Atsushi |
author_sort |
Ikeda, Atsushi |
title |
Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
title_short |
Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
title_full |
Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
title_fullStr |
Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
title_full_unstemmed |
Combination of conventional geophysical methods for sounding the composition of rock glaciers in the Swiss Alps |
title_sort |
combination of conventional geophysical methods for sounding the composition of rock glaciers in the swiss alps |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1002/ppp.550 http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.550 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.550 |
genre |
Ice permafrost Permafrost and Periglacial Processes |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 17, issue 1, page 35-48 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.550 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
17 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
48 |
_version_ |
1800753156699717632 |