Retrieval of porous sea ice properties from multifrequency electromagnetic measurements ...

• Main Authors: Neudert, Mara, Hendricks, Stefan, Arndt, Stefanie, Haas, Christian
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; Arctic; Rotten; Antarc*; Antarctica; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-0596; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016901

<!--!introduction!--> The porosity of sea ice is a crucial property for understanding processes and feedback mechanisms of the polar-climate system, as it strongly affects the physical, ecological, and biogeochemical properties of sea ice. Sea ice porosity is also closely related to surface flooding and the solid fraction of platelet ice in Antarctica. A direct method for measuring sea ice porosity is electromagnetic (EM) induction sounding, which can be applied on the ground or from airborne platforms. We present advancements in data collection, calibration, and inversion procedures. In this study, we modified the Phyton EMagPy API for fast and adaptable inversion of sea ice surveys and use inverted EM data to study the porosity of sea ice in the Arctic and Antarctic. Over Arctic summer sea, we retrieve the macro-scale porosity of rotten ice and the salinity and depth evolution of melt ponds. The salinity and porosity evolution could be reproduced with varying success, but the addition of several ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...