Seasonal variability in glacial inflow volume and its consequences on circulation pattern and water property distribution of an Antarctic bay ...

• Main Author: Osińska, Maria
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; King George Island; West Antarctica; Admiralty Bay; Antarctic Bay; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.57757/iugg23-2936; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018947

<!--!introduction!--> Over 35% of Antarctic coastline consists of tidewater glacial termini, found mostly in West Antarctica fjords. The hydrodynamics of these bays and its variability caused by changing volume and distribution of glacial meltwater is still poorly understood. Therefore, an in-depth analysis of all-year round water level changes, circulation pattern and water properties distribution has been done in Admiralty Bay (AB), King George Island, an Antarctic bay impacted by adjacent twenty retreating glaciers. Hydrodynamic modelling has been performed in varied scenarios of volume and location of glacial meltwater input, using Delft3D Flow software. Model results revealed a pattern of circulation dominated by two cyclonic circulation cells, controlling water exchange between AB and the ocean. Horizontal and vertical limits of glacial impact have been defined. Results were confronted with measurement dataset consisting of CTD probing of water column properties performed on 142 days, in 31 sites ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...