Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data
Radar backscattering properties can be extremely sensitive to the freeze/thaw states of the ground surface. This study aims to evaluate the changes of L-band microwave scattering characteristics between thawed and frozen conditions by using polarimetric scattering mechanism indicators. ALOS PALSAR p...
Published in: | Remote Sensing |
---|---|
Main Author: | |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2015
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs71215874 |
id |
ftmdpi:oai:mdpi.com:/2072-4292/7/12/17135/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2072-4292/7/12/17135/ 2023-05-15T17:56:30+02:00 Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data Sang-Eun Park 2015-12-18 application/pdf https://doi.org/10.3390/rs71215874 EN eng Multidisciplinary Digital Publishing Institute http://creativecommons.org/licenses/by/3.0/ CC-BY Remote Sensing Volume 7 Issue 12 Pages 17135-17148 synthetic aperture radar (SAR) radar polarimetry microwave scattering mechanism permafrost active layer freeze/thaw ALOS PALSAR Text 2015 ftmdpi https://doi.org/10.3390/rs71215874 2019-04-08T21:56:07Z Radar backscattering properties can be extremely sensitive to the freeze/thaw states of the ground surface. This study aims to evaluate the changes of L-band microwave scattering characteristics between thawed and frozen conditions by using polarimetric scattering mechanism indicators. ALOS PALSAR polarimetric mode data acquired in winter and spring seasons over Eastern Siberia are used in this study. Experimental results show that the actual scattering mechanisms and their seasonal variations over various forested and non-forested permafrost ecosystems can be successfully characterized by the polarimetric target decomposition parameters and the polarimetric coherences. In addition, fully polarimetric radar observations exhibit great potential for mapping land cover types and surficial features in the permafrost active layer. Particularly, the co-polarization coherences on the HV-polarization basis and circular-polarization basis were found to be very useful for discriminating different surficial geocryological characteristics in recently burnt forests and thermokarst regions. Text permafrost Thermokarst Siberia MDPI Open Access Publishing Remote Sensing 7 12 17135 17148 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
synthetic aperture radar (SAR) radar polarimetry microwave scattering mechanism permafrost active layer freeze/thaw ALOS PALSAR |
spellingShingle |
synthetic aperture radar (SAR) radar polarimetry microwave scattering mechanism permafrost active layer freeze/thaw ALOS PALSAR Sang-Eun Park Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
topic_facet |
synthetic aperture radar (SAR) radar polarimetry microwave scattering mechanism permafrost active layer freeze/thaw ALOS PALSAR |
description |
Radar backscattering properties can be extremely sensitive to the freeze/thaw states of the ground surface. This study aims to evaluate the changes of L-band microwave scattering characteristics between thawed and frozen conditions by using polarimetric scattering mechanism indicators. ALOS PALSAR polarimetric mode data acquired in winter and spring seasons over Eastern Siberia are used in this study. Experimental results show that the actual scattering mechanisms and their seasonal variations over various forested and non-forested permafrost ecosystems can be successfully characterized by the polarimetric target decomposition parameters and the polarimetric coherences. In addition, fully polarimetric radar observations exhibit great potential for mapping land cover types and surficial features in the permafrost active layer. Particularly, the co-polarization coherences on the HV-polarization basis and circular-polarization basis were found to be very useful for discriminating different surficial geocryological characteristics in recently burnt forests and thermokarst regions. |
format |
Text |
author |
Sang-Eun Park |
author_facet |
Sang-Eun Park |
author_sort |
Sang-Eun Park |
title |
Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
title_short |
Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
title_full |
Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
title_fullStr |
Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
title_full_unstemmed |
Variations of Microwave Scattering Properties by Seasonal Freeze/Thaw Transition in the Permafrost Active Layer Observed by ALOS PALSAR Polarimetric Data |
title_sort |
variations of microwave scattering properties by seasonal freeze/thaw transition in the permafrost active layer observed by alos palsar polarimetric data |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2015 |
url |
https://doi.org/10.3390/rs71215874 |
genre |
permafrost Thermokarst Siberia |
genre_facet |
permafrost Thermokarst Siberia |
op_source |
Remote Sensing Volume 7 Issue 12 Pages 17135-17148 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/rs71215874 |
container_title |
Remote Sensing |
container_volume |
7 |
container_issue |
12 |
container_start_page |
17135 |
op_container_end_page |
17148 |
_version_ |
1766164681644310528 |