Incorporating InSAR kinematics into rock glacier inventories: insights from 11 regions worldwide

Détails

Ressource 1Télécharger: tc-16-2769-2022-2.pdf (14804.73 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_830F91854DA1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Incorporating InSAR kinematics into rock glacier inventories: insights from 11 regions worldwide
Périodique
The Cryosphere
Auteur⸱e⸱s
Bertone Aldo, Barboux Chloé, Bodin Xavier, Bolch Tobias, Brardinoni Francesco, Caduff Rafael, Christiansen Hanne H., Darrow Margaret M., Delaloye Reynald, Etzelmüller Bernd, Humlum Ole, Lambiel Christophe, Lilleøren Karianne S., Mair Volkmar, Pellegrinon Gabriel, Rouyet Line, Ruiz Lucas, Strozzi Tazio
ISSN
1994-0424
Statut éditorial
Publié
Date de publication
14/07/2022
Peer-reviewed
Oui
Volume
16
Numéro
7
Pages
2769-2792
Langue
anglais
Résumé
Rock glaciers are landforms related to permafrost creep that are sensitive to climate variability and change. Their spatial distribution and kinematic behaviour can be critical for managing water resources and geohazards in periglacial areas. Rock glaciers have been inventoried for decades worldwide, often without assessment of their kinematics. The availability of remote sensing data however makes the inclusion of kinematic information potentially feasible, but requires a common methodology in order to create homogeneous inventories. In this context, the International Permafrost Association (IPA) Action Group on rock glacier inventories and kinematics (2018–2023), with the support of the European Space Agency (ESA) Permafrost Climate Change Initiative (CCI) project, is defining standard guidelines for the inclusion of kinematic information within inventories. Here, we demonstrate the feasibility of applying common rules proposed by the Action Group in 11 regions worldwide. Spaceborne interferometric synthetic aperture radar (InSAR) was used to characterise identifiable moving areas related to rock glaciers, applying a manual and a semi-automated approach. Subsequently, these areas were used to assign kinematic information to rock glaciers in existing or newly compiled inventories. More than 5000 moving areas and more than 3600 rock glaciers were classified according to their kinematics. The method and the preliminary results were analysed. We identified drawbacks related to the intrinsic limitations of InSAR and to various applied strategies regarding the integration of non-moving rock glaciers in some investigated regions. This is the first internationally coordinated work that incorporates kinematic attributes within rock glacier inventories at a global scale. The results show the value of designing standardised inventorying procedures for periglacial geomorphology.
Mots-clé
Earth-Surface Processes, Water Science and Technology
Web of science
Open Access
Oui
Création de la notice
05/09/2022 9:51
Dernière modification de la notice
15/10/2022 7:11
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