Thaw Settlement Monitoring and Active Layer Thickness Retrieval Using Time Series COSMO-SkyMed Imagery in Iqaluit Airport ...

Thaw consolidation of degrading permafrost is a serious hazard to the safety and operation of infrastructure. Monitoring thermal changes in the active layer (AL), the proportion of the soil above permafrost that thaws and freezes periodically, is critical to understanding the conditions of the top l...

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Bibliographic Details
Main Authors: Ma, Deying, Motagh, Mahdi, Liu, Guoxiang, Zhang, Rui, Wang, Xiaowen, Zhang, Bo, Xiang, Wei, Yu, Bing
Format: Text
Language:English
Published: Basel : MDPI 2022
Subjects:
ALT
CSK images
FCNInSAR
permafrost
SoilGrids
thaw settlement coefficient
VWC
Dewey Decimal Classification600 | Technik620 | Ingenieurwissenschaften und Maschinenbau
Active layer thickness
Iqaluit
Nunavut
Online Access:https://dx.doi.org/10.15488/15508
https://www.repo.uni-hannover.de/handle/123456789/15629
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Summary:Thaw consolidation of degrading permafrost is a serious hazard to the safety and operation of infrastructure. Monitoring thermal changes in the active layer (AL), the proportion of the soil above permafrost that thaws and freezes periodically, is critical to understanding the conditions of the top layer above the permafrost and regulating the construction, operation, and maintenance of facilities. However, this is a very challenging task using ground-based methods such as ground-penetrating radar (GPR) or temperature sensors. This study explores the integration of interferometric measurements from high-resolution X-band Synthetic Aperture Radar (SAR) images and volumetric water content (VWC) data from SoilGrids to quantify detailed spatial variations in active layer thickness (ALT) in Iqaluit, the territorial capital of Nunavut in Canada. A total of 21 SAR images from COSMO Sky-Med (CSK) were first analyzed using the freely connected network interferometric synthetic aperture radar (FCNInSAR) method to map ...

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