Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes
Remote sensors face challenges in characterizing mountain permafrost and ground thermal conditions or mapping rock glaciers and debris-covered glaciers. We explore the potential of thermal imaging and in particular thermal inertia mapping in mountain cryospheric research, focusing on the relationshi...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f7001263344f4a3fb2acf1392c63f06e 2023-05-15T16:37:33+02:00 Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes A. Brenning M. A. Peña S. Long A. Soliman 2012-03-01 https://doi.org/10.5194/tc-6-367-2012 http://www.the-cryosphere.net/6/367/2012/tc-6-367-2012.pdf https://doaj.org/article/f7001263344f4a3fb2acf1392c63f06e en eng Copernicus Publications doi:10.5194/tc-6-367-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/367/2012/tc-6-367-2012.pdf https://doaj.org/article/f7001263344f4a3fb2acf1392c63f06e undefined The Cryosphere, Vol 6, Iss 2, Pp 367-382 (2012) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/tc-6-367-2012 2023-01-22T19:15:39Z Remote sensors face challenges in characterizing mountain permafrost and ground thermal conditions or mapping rock glaciers and debris-covered glaciers. We explore the potential of thermal imaging and in particular thermal inertia mapping in mountain cryospheric research, focusing on the relationships between ground surface temperatures and the presence of ice-debris landforms on one side and land surface temperature (LST) and apparent thermal inertia (ATI) on the other. In our case study we utilize ASTER daytime and nighttime imagery and in-situ measurements of near-surface ground temperature (NSGT) in the Mediterranean Andes during a snow-free and dry observation period in late summer. Spatial patterns of LST and NSGT were mostly consistent with each other both at daytime and at nighttime. Daytime LST over ice-debris landforms was decreased and ATI consequently increased compared to other debris surfaces under otherwise equal conditions, but NSGT showed contradictory results, which underlines the complexity and possible scale dependence of ATI in heterogeneous substrates with the presence of a thermal mismatch and a heat sink at depth. While our results demonstrate the utility of thermal imaging and ATI mapping in a mountain cryospheric context, further research is needed for a better interpretation of ATI patterns in complex thermophysical conditions. Article in Journal/Newspaper Ice permafrost The Cryosphere Unknown The Cryosphere 6 2 367 382 |
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geo envir A. Brenning M. A. Peña S. Long A. Soliman Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
topic_facet |
geo envir |
description |
Remote sensors face challenges in characterizing mountain permafrost and ground thermal conditions or mapping rock glaciers and debris-covered glaciers. We explore the potential of thermal imaging and in particular thermal inertia mapping in mountain cryospheric research, focusing on the relationships between ground surface temperatures and the presence of ice-debris landforms on one side and land surface temperature (LST) and apparent thermal inertia (ATI) on the other. In our case study we utilize ASTER daytime and nighttime imagery and in-situ measurements of near-surface ground temperature (NSGT) in the Mediterranean Andes during a snow-free and dry observation period in late summer. Spatial patterns of LST and NSGT were mostly consistent with each other both at daytime and at nighttime. Daytime LST over ice-debris landforms was decreased and ATI consequently increased compared to other debris surfaces under otherwise equal conditions, but NSGT showed contradictory results, which underlines the complexity and possible scale dependence of ATI in heterogeneous substrates with the presence of a thermal mismatch and a heat sink at depth. While our results demonstrate the utility of thermal imaging and ATI mapping in a mountain cryospheric context, further research is needed for a better interpretation of ATI patterns in complex thermophysical conditions. |
format |
Article in Journal/Newspaper |
author |
A. Brenning M. A. Peña S. Long A. Soliman |
author_facet |
A. Brenning M. A. Peña S. Long A. Soliman |
author_sort |
A. Brenning |
title |
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
title_short |
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
title_full |
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
title_fullStr |
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
title_full_unstemmed |
Thermal remote sensing of ice-debris landforms using ASTER: an example from the Chilean Andes |
title_sort |
thermal remote sensing of ice-debris landforms using aster: an example from the chilean andes |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-367-2012 http://www.the-cryosphere.net/6/367/2012/tc-6-367-2012.pdf https://doaj.org/article/f7001263344f4a3fb2acf1392c63f06e |
genre |
Ice permafrost The Cryosphere |
genre_facet |
Ice permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 6, Iss 2, Pp 367-382 (2012) |
op_relation |
doi:10.5194/tc-6-367-2012 1994-0416 1994-0424 http://www.the-cryosphere.net/6/367/2012/tc-6-367-2012.pdf https://doaj.org/article/f7001263344f4a3fb2acf1392c63f06e |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-6-367-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
2 |
container_start_page |
367 |
op_container_end_page |
382 |
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1766027843068755968 |