Multi-technique monitoring of climate change signature in Svalbard ...

• Main Authors: Nicolas, Joelle, Verdun, Jérôme, Baltzer, Agnès, Boy, Jean-Paul, Tafflet, Alicia, Durand, Frédéric, Lemoine, Jean-Michel, Perosanz, Félix
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Svalbard; Svalbard Archipelago
• Online Access: https://dx.doi.org/10.57757/iugg23-1808; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017777

<!--!introduction!--> The Svalbard archipelago is strongly impacted by past and present-day ice melting. This area offers the benefit that several in situ and space datasets are available at different spatial and temporal resolutions. We perform a multi-technique intercomparison for a better understanding of the different processes and extract common climate-related signals, allowing climate change signature analysis. Space geodetic techniques provide time series of daily crustal deformation and monthly gravity field variations over several years at local and regional scales. Seasonal signals included in these time series are mainly caused by the (visco)elastic response of variable mass load due to ice and snow accumulation. GNSS positioning and GRACE equivalent water height time series are compared to geophysical models based on mass redistributions and snow models. For this, we applied specific data analysis methods to accurately separate the different sources and reveal climate change signature from ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...