Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR
In recent years there has been increased interest in using SAR to study and monitor glaciers and ice sheets for glaciological and climate change research. This paper describes the estimation of ice extinctions through the modelling of Pol-InSAR coherences as a combination of a surface contribution f...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Conference Object |
Language: | English |
Published: |
2009
|
Subjects: | |
Online Access: | https://elib.dlr.de/57961/ https://elib.dlr.de/57961/1/jsharma_polinsar2009_paper.pdf |
id |
ftdlr:oai:elib.dlr.de:57961 |
---|---|
record_format |
openpolar |
spelling |
ftdlr:oai:elib.dlr.de:57961 2024-05-19T07:37:52+00:00 Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR Sharma, Jayanti Hajnsek, Irena Papathanassiou, Konstantinos ESA 2009-01 application/pdf https://elib.dlr.de/57961/ https://elib.dlr.de/57961/1/jsharma_polinsar2009_paper.pdf en eng https://elib.dlr.de/57961/1/jsharma_polinsar2009_paper.pdf Sharma, Jayanti und Hajnsek, Irena und Papathanassiou, Konstantinos (2009) Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR. In: Proceedings of the International Workshop on Applications of Polarimetry and Polarimetric Interferometry (Pol-InSAR), Seiten 1-8. International Workshop on Applications of Polarimetry and Polarimetric Interferometry (Pol-InSAR), 2009-01-26 - 2009-01-30, Frascati, Italy. Radarkonzepte Institut für Hochfrequenztechnik und Radarsysteme Konferenzbeitrag NonPeerReviewed 2009 ftdlr 2024-04-25T00:15:01Z In recent years there has been increased interest in using SAR to study and monitor glaciers and ice sheets for glaciological and climate change research. This paper describes the estimation of ice extinctions through the modelling of Pol-InSAR coherences as a combination of a surface contribution from the snow-ice interface and a volume response from an oriented particle cloud. Separation of the ground and volume contributions is obtained using a novel decomposition of the polarimetric covariance matrix which allows for preferential particle orientations and accounts for the influence of the dielectric constants of ice and snow. Ground-to-volume scattering ratios derived from polarimetry are used in conjunction with Pol-InSAR interferometric coherences to invert the extinction of the ice layer. Validation is performed with airborne Pol-InSAR data at L- and P-band collected using DLR's E-SAR system over the Austfonna ice cap in Svalbard, Norway as part of the ICESAR campaign. Conference Object Austfonna glacier glacier Ice cap Svalbard German Aerospace Center: elib - DLR electronic library |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Radarkonzepte Institut für Hochfrequenztechnik und Radarsysteme |
spellingShingle |
Radarkonzepte Institut für Hochfrequenztechnik und Radarsysteme Sharma, Jayanti Hajnsek, Irena Papathanassiou, Konstantinos Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
topic_facet |
Radarkonzepte Institut für Hochfrequenztechnik und Radarsysteme |
description |
In recent years there has been increased interest in using SAR to study and monitor glaciers and ice sheets for glaciological and climate change research. This paper describes the estimation of ice extinctions through the modelling of Pol-InSAR coherences as a combination of a surface contribution from the snow-ice interface and a volume response from an oriented particle cloud. Separation of the ground and volume contributions is obtained using a novel decomposition of the polarimetric covariance matrix which allows for preferential particle orientations and accounts for the influence of the dielectric constants of ice and snow. Ground-to-volume scattering ratios derived from polarimetry are used in conjunction with Pol-InSAR interferometric coherences to invert the extinction of the ice layer. Validation is performed with airborne Pol-InSAR data at L- and P-band collected using DLR's E-SAR system over the Austfonna ice cap in Svalbard, Norway as part of the ICESAR campaign. |
author2 |
ESA |
format |
Conference Object |
author |
Sharma, Jayanti Hajnsek, Irena Papathanassiou, Konstantinos |
author_facet |
Sharma, Jayanti Hajnsek, Irena Papathanassiou, Konstantinos |
author_sort |
Sharma, Jayanti |
title |
Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
title_short |
Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
title_full |
Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
title_fullStr |
Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
title_full_unstemmed |
Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR |
title_sort |
characterisation of oriented volumes in glacier ice and extinction inversion with pol-insar |
publishDate |
2009 |
url |
https://elib.dlr.de/57961/ https://elib.dlr.de/57961/1/jsharma_polinsar2009_paper.pdf |
genre |
Austfonna glacier glacier Ice cap Svalbard |
genre_facet |
Austfonna glacier glacier Ice cap Svalbard |
op_relation |
https://elib.dlr.de/57961/1/jsharma_polinsar2009_paper.pdf Sharma, Jayanti und Hajnsek, Irena und Papathanassiou, Konstantinos (2009) Characterisation of oriented volumes in glacier ice and extinction inversion with Pol-InSAR. In: Proceedings of the International Workshop on Applications of Polarimetry and Polarimetric Interferometry (Pol-InSAR), Seiten 1-8. International Workshop on Applications of Polarimetry and Polarimetric Interferometry (Pol-InSAR), 2009-01-26 - 2009-01-30, Frascati, Italy. |
_version_ |
1799477257307160576 |