Abstract
Post-glacial land uplift and shore displacement are dynamic processes that are challenging to present with cartography and geovisualization. To communicate these phenomena, we have created a dynamic visualization in the form of high-quality animation, utilizing automated processes in the computation and rendering of large raster datasets. We have developed a simplified model to assess the past and future elevation models, and applied it to the High Coast/Kvarken Archipelago UNESCO World Heritage Site, which is considered one of the best places in the world to observe land uplift. Additionally, the ice decline in the area has been evaluated and visualized.Based on the model and the present-day topography/bathymetry data, we provide a 40 fps 4K-resolution animation with an 80-s duration of the post-glacial history at the World Heritage Site and its vicinity, extending from 10,500 years ago to 1000 years in the future. Although they do not aim to contain the precision of thorough paleogeographic reconstructions, we have found that the individual frames of the animation are closely aligned with comparable geological data. We also present the computational process flow and the visualization principles used in the automated rendering, and thus aim to contribute to the cartographic presentation of geodynamic processes.
Highlights
Glacial isostatic adjustment (GIA) is an ongoing geodynamic process at the High Coast, Sweden/Kvarken Archipelago, Finland, UNESCO World Heritage Site
GIA is exhibited as land uplift, because Earth’s crust, which was depressed by the continental ice sheet during the last glacial period, is rebounding towards the isostatic equilibrium
The Kvarken Archipelago provides a unique view of the glacial depositional formations, and together the areas provide a representative example of a landscape shaped by post-glacial land uplift (UNESCO, 2006)
Summary
Glacial isostatic adjustment (GIA) is an ongoing geodynamic process at the High Coast, Sweden/Kvarken Archipelago, Finland, UNESCO World Heritage Site. The Outstanding Universal Value (OUV) of the site is based on two main factors defined by UNESCO. Both the High Coast and the Kvarken Archipelago show some of the highest rates of post-glacial uplift in the world, acting as key areas for the understanding of crustal response to the deglaciation. The Kvarken Archipelago provides a unique view of the glacial depositional formations, and together the areas provide a representative example of a landscape shaped by post-glacial land uplift (UNESCO, 2006)
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