The impact of solar radiation upon rock weathering at low temperature: a laboratory study
Abstract The impact of solar radiation heating upon rock temperatures in a cold environment was investigated by an experimental simulation. Different rock samples, collected from the central part of the Tibet Plateau, were pre‐treated and put in a low‐temperature box. Temperatures in the box changed...
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crwiley:10.1002/ppp.440 2024-09-15T18:30:16+00:00 The impact of solar radiation upon rock weathering at low temperature: a laboratory study Zhu, Li‐ping Wang, Jia‐cheng Li, Bing‐yuan 2003 http://dx.doi.org/10.1002/ppp.440 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.440 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.440 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 14, issue 1, page 61-67 ISSN 1045-6740 1099-1530 journal-article 2003 crwiley https://doi.org/10.1002/ppp.440 2024-07-25T04:21:56Z Abstract The impact of solar radiation heating upon rock temperatures in a cold environment was investigated by an experimental simulation. Different rock samples, collected from the central part of the Tibet Plateau, were pre‐treated and put in a low‐temperature box. Temperatures in the box changed by a radiation heat source that simulated solar insolation. Results show that the temperature‐increase rate of samples saturated by water is similar to that saturated by salt solution, but the decrease rate of the former is higher than the latter. The temperature rebound derived from the potential heat release of the rock‐interstitial water transition at −4° C occurred more frequently on samples saturated by water than upon those saturated by salt solution. Salt content is a possible agent that inhibits the freeze‐thaw process. Insolation heating induces faster temperature variations on the rock surface than in the interior. This is more closely related to rock mineral composition than to pore size and pore density. This implies that fast temperature variations may lead to the continuous expanding and contraction of the rock minerals. This may result in rock fatigue and may dominate the weathering process. These results, applied to different rocks saturated by water or salt solution, are also supported by measuring changes in ultrasonic‐wave‐transmitting rates. Copyright © 2003 John Wiley & Sons, Ltd. Article in Journal/Newspaper Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 14 1 61 67 |
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Abstract The impact of solar radiation heating upon rock temperatures in a cold environment was investigated by an experimental simulation. Different rock samples, collected from the central part of the Tibet Plateau, were pre‐treated and put in a low‐temperature box. Temperatures in the box changed by a radiation heat source that simulated solar insolation. Results show that the temperature‐increase rate of samples saturated by water is similar to that saturated by salt solution, but the decrease rate of the former is higher than the latter. The temperature rebound derived from the potential heat release of the rock‐interstitial water transition at −4° C occurred more frequently on samples saturated by water than upon those saturated by salt solution. Salt content is a possible agent that inhibits the freeze‐thaw process. Insolation heating induces faster temperature variations on the rock surface than in the interior. This is more closely related to rock mineral composition than to pore size and pore density. This implies that fast temperature variations may lead to the continuous expanding and contraction of the rock minerals. This may result in rock fatigue and may dominate the weathering process. These results, applied to different rocks saturated by water or salt solution, are also supported by measuring changes in ultrasonic‐wave‐transmitting rates. Copyright © 2003 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Zhu, Li‐ping Wang, Jia‐cheng Li, Bing‐yuan |
spellingShingle |
Zhu, Li‐ping Wang, Jia‐cheng Li, Bing‐yuan The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
author_facet |
Zhu, Li‐ping Wang, Jia‐cheng Li, Bing‐yuan |
author_sort |
Zhu, Li‐ping |
title |
The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
title_short |
The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
title_full |
The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
title_fullStr |
The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
title_full_unstemmed |
The impact of solar radiation upon rock weathering at low temperature: a laboratory study |
title_sort |
impact of solar radiation upon rock weathering at low temperature: a laboratory study |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1002/ppp.440 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.440 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.440 |
genre |
Permafrost and Periglacial Processes |
genre_facet |
Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 14, issue 1, page 61-67 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.440 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
14 |
container_issue |
1 |
container_start_page |
61 |
op_container_end_page |
67 |
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1810471735874551808 |