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Heat in Earth’s mantle may explain uneven ice loss in Greenland
- New 3D mantle heat maps reveal strong east-west variations beneath Greenland that affect ice movement.
- Basal heat flux from the mantle is linked to where the ice sheet melts from below.
- The team created a probabilistic model that merges seismic data, gravity, and heat flow.
- Findings help explain why satellite data show uneven gravity and height changes across the ice sheet.
- Researchers linked deep-Earth patterns to surface changes to improve sea-level forecasts.
- The study uses a joint inversion of multiple datasets to reduce uncertainties.
- Greenland lost about 195 billion short tons of ice in 2023, per Copernicus data.
- Deep-heat patterns align with a hotspot track and mantle plume evidence beneath Greenland.
- The research aims to separate ocean- and atmosphere-driven changes from solid-Earth effects.
- Published in the Proceedings of the National Academy of Sciences, advancing climate-tectonics understanding.
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