Exploring the hidden world beneath the #PersGlacier. Scanning the ice cave in 3D with a LiDAR system to reveal its shapes and layers.

[2/2] This year’s melt was driven by a snow-poor winter and summer heatwaves. Glaciers below 3k m lost over 2 m of ice. Shrinking glaciers also destabilize mountains, as seen in May, when a rock–ice avalanche buried Blatten in the Lötschental.

🔗 to #GLAMOS report: doi.glamos.ch/pubs/annualr...

[1/2] 📢 GLAMOS @scnat.ch press release out today: Swiss glaciers lost another 3% of their volume in 2025, the 4th-largest decline ever measured. In just 10 years, they’ve lost a quarter of their ice mass. Over 1k small glaciers have already vanished.

🔗 to press release: scnat.ch/en/uuid/i/9d...

[2/2] More on this story tomorrow in the #GLAMOS press release (01.10.2025).

And don’t miss the #SRF Einstein documentary on 02.10.2025, featuring the making-of our repeat photography.

@matthias-huss.bsky.social

#Glacier #ClimateChange #RepeatPhotography

[1/2] Sometimes pictures say more than 1,000 words.
This repeat photography of Birchgletscher (1927–2025) shows a century of change, ending in this year’s tragic collapse that destroyed Blatten and claimed one life.

📷 1927 vs 2025

New paper by colleagues at @unil.bsky.social (with our participation): 4D GPR imaging of a near-terminus glacier collapse feature. Drone-based radar reveals how cavities & subglacial channels evolve at the Rhône Glacier. 📖

tc.copernicus.org/articles/19/...