We are stoked to present a brand-new @natclimchange.bsky.social paper by our Jan Kavan! ❤️ Did you know that between 2000 and 2020, retreat of marine-terminating glaciers has exposed more than 2,400 km of new coastline in the Arctic? 🧵👇 - ThreadSky

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cpecz.bsky.social • 16 days ago

We are stoked to present a brand-new @natclimchange.bsky.social paper by our Jan Kavan! ❤️

Did you know that between 2000 and 2020, retreat of marine-terminating glaciers has exposed more than 2,400 km of new coastline in the Arctic?

🧵👇

Comments

cpecz.bsky.social•16 days ago

Thanks to detailed analyses of satellite images, Jan et al. discovered that most of these new coastlines are in Greenland. This could have significant impacts on local ecosystems and communities.

cpecz.bsky.social•16 days ago

For example, these newly formed paraglacial coastlines are highly dynamic, exhibiting high sediment fluxes and rapidly evolving landforms. What does this mean?

cpecz.bsky.social•16 days ago

Valleys that were historically held and stabilized by glaciers may now be much more prone to landslides. And these landslides are already happening in Greenland—some are so massive that they can trigger mega-tsunamis.

https://www.youtube.com/watch?v=jBmkT5y52ng

cpecz.bsky.social•16 days ago

But that's not all. As glaciers retreat, they don’t just expose new coastlines—they also uncover new islands. Jan et al. identified 35 new islands larger than 0.5 km², most of them in Greenland.

cpecz.bsky.social•16 days ago

The loss of marine-terminating glaciers also affects life in the Arctic. These regions, where the atmosphere, cryosphere, and hydrosphere connect, are biodiversity hotspots. Losing them means losing one of the richest bio-hotspots in the Arctic.

cpecz.bsky.social•16 days ago

You can check out the full article, published in @natclimchange.bsky.social, at this link.

🧵👆

https://www.nature.com/articles/s41558-025-02282-5

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