Hydroclimate intensification likely aided glacier survival on Svalbard in the Early Holocene
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https://hdl.handle.net/10037/36510Dato
2025-02-11Type
Journal articleTidsskriftartikkel
Peer reviewed
Forfatter
Auer, Andreea-Gabriela; van der Bilt, Willem Godert Maria; Schomacker, Anders; Bakke, Jostein; Støren, Eivind W. N.; Buckby, Joseph; Cederstrøm, Jan Magne; van der Plas, SanderSammendrag
Accelerated Arctic warming and wetting has global impacts, as the region’s glaciers and ice caps
respond to variations in temperature and precipitation, impacting global sea-level change. But as the
observations needed to calibrate models are scarce, predictions cannot confirm if increases in
snowfall can help offset melt. Here, we analyze two 14,000-year-long glacier-fed lake sediment
records from the Svalbard archipelago to examine the response of a resilient ice cap (Åsgardfonna) to
warmer-than-present Holocene Thermal Maximum conditions. End-Member Modelling allowed us to
unmix the diluted grain size signal of rock flour – a widely used proxy for past glacier change, and
surface runoff – an indicator of hydrological intensification. Our findings reveal that Åsgardfonna
survived and may have advanced despite warmer conditions, possibly due to enhanced snowfall
driven by sea-ice loss. This suggests that future increases in precipitation could moderate glacier
retreat in similar settings.
Forlag
Springer NatureSitering
Auer, van der Bilt, Schomacker, Bakke, Støren, Buckby, Cederstrøm, van der Plas. Hydroclimate intensification likely aided glacier survival on Svalbard in the Early Holocene. Communications Earth & Environment. 2025;6:1-14Metadata
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