Rock Properties as Controls on Free‐face Debris Fall Activity
Abstract A free face composed of basalt flows showed, over a 72 week observation period, considerable variation in yield (kg or m 3 ) of fallen material. Yield peaks in spring and autumn were recorded but small contributions were made from all flows throughout the year. The incidence of frost action...
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crwiley:10.1002/ppp.3430020406 2024-06-02T08:13:10+00:00 Rock Properties as Controls on Free‐face Debris Fall Activity Douglas, George R. Whalley, W. Brian McGreevy, James P. 1991 http://dx.doi.org/10.1002/ppp.3430020406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430020406 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430020406 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 2, issue 4, page 311-319 ISSN 1045-6740 1099-1530 journal-article 1991 crwiley https://doi.org/10.1002/ppp.3430020406 2024-05-03T11:52:06Z Abstract A free face composed of basalt flows showed, over a 72 week observation period, considerable variation in yield (kg or m 3 ) of fallen material. Yield peaks in spring and autumn were recorded but small contributions were made from all flows throughout the year. The incidence of frost action cannot account for all of the yield peaks. An explanation of free‐face weathering can best be given by taking the microcrack crack system into account in relation to some simple rock properties. Although there are several factors involved, microcrack density and coefficient of loosening are useful indicators of flow behaviour. An explanation of rock removal which takes material properties into account as well as environmental or climatic conditions is to be preferred and can be applied as a general model for all climates. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 2 4 311 319 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract A free face composed of basalt flows showed, over a 72 week observation period, considerable variation in yield (kg or m 3 ) of fallen material. Yield peaks in spring and autumn were recorded but small contributions were made from all flows throughout the year. The incidence of frost action cannot account for all of the yield peaks. An explanation of free‐face weathering can best be given by taking the microcrack crack system into account in relation to some simple rock properties. Although there are several factors involved, microcrack density and coefficient of loosening are useful indicators of flow behaviour. An explanation of rock removal which takes material properties into account as well as environmental or climatic conditions is to be preferred and can be applied as a general model for all climates. |
format |
Article in Journal/Newspaper |
author |
Douglas, George R. Whalley, W. Brian McGreevy, James P. |
spellingShingle |
Douglas, George R. Whalley, W. Brian McGreevy, James P. Rock Properties as Controls on Free‐face Debris Fall Activity |
author_facet |
Douglas, George R. Whalley, W. Brian McGreevy, James P. |
author_sort |
Douglas, George R. |
title |
Rock Properties as Controls on Free‐face Debris Fall Activity |
title_short |
Rock Properties as Controls on Free‐face Debris Fall Activity |
title_full |
Rock Properties as Controls on Free‐face Debris Fall Activity |
title_fullStr |
Rock Properties as Controls on Free‐face Debris Fall Activity |
title_full_unstemmed |
Rock Properties as Controls on Free‐face Debris Fall Activity |
title_sort |
rock properties as controls on free‐face debris fall activity |
publisher |
Wiley |
publishDate |
1991 |
url |
http://dx.doi.org/10.1002/ppp.3430020406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430020406 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430020406 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 2, issue 4, page 311-319 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.3430020406 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
2 |
container_issue |
4 |
container_start_page |
311 |
op_container_end_page |
319 |
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1800736560742662144 |