GAPHAZ - Glacier and Permafrost Hazards in Mountains

Have you submitted your #EGU26 abstract?! We‘ve put together a little list (non-exhaustive) of sessions that fit gaphaz topics well. See you in #Vienna
#hazards #glaciers #permafrost #mountains #risk #science

Mapping climate-change-related processes affecting most frequented routes by French mountain guides Abstract. This paper examines the impact of climate change on alpinism in the western European Alps, focusing particularly on the routes most frequently used by French mountain guides. The aim is to i...

Climate change leads mountain guides in the Alps to alter their choice and timing of high-altitude routes, reacting to increasing danger 🧪 gh.copernicus.org/articles/80/...

A number of #gaphaz members, including glaciologists from #Tajikistan, are investigating a sequence of catastrophic #detachments from #Didal glacier following sudden, #surge like accelerations this summer and fall. Stay tuned for more!
#hazard #risk #glacier #sciene #mountains

Melting Glaciers in the Himalayas Feed Lakes That Threaten Towns Below (Gift Article) Melting ice from the Himalayas is creating thousands of unstable lakes, a growing menace to towns and cities below.

As #COP30 heats up, superb visual storytelling in @nytimes.com about climate change & the threat of glacial lake outburst floods in the Himalaya, featuring the work of @cscottwatson.bsky.social and quotes from @kristencook.bsky.social @sonamshp.bsky.social and me. 🧪⚒️ www.nytimes.com/interactive/...

📘 New paper: Post-Little Ice Age Shrinkage of the Tsaneri–Nageba Glacier System and Recent Proglacial Lake Evolution in the Georgian Caucasus

📉Glacier shrank ~43% since ~1820
🌊Lake grew from ~14,000m² in 2015 to ~107,900 m² 2025
⚠️Hazard + water resources implications

www.mdpi.com/2073-4441/17...

NASA-ISRO Satellite Sends First Radar Images of Earth’s Surface Preliminary images from the most powerful Earth radar satellite ever launched offer a tantalizing glimpse of the science the mission will be able to deliver.

Some good news from space, as the NASA-ISRO NISAR mission publishes its first synthetic aperture radar images of Earth. This spacecraft has a heckin' big antenna (a dish 12 meters across) for bouncing L- and S-band (25- and 10-cm) radio waves off the surface www.jpl.nasa.gov/news/nasa-is...

Seismic waveforms and power spectral density plots showing the signal of a landslide lake outburst flood.

Planet satellite image from August 2025 of a large landslide blocking a river and creating a lake.

The Matai’an landslide dam in eastern Taiwan has failed this afternoon (eos.org/thelandslide...), flooding Guangfu, about 15 km downstream focustaiwan.tw/society/2025.... Even in the middle of a typhoon, the resulting flood produced a detectable seismic signal at stations ~40 km away.

Unwetter 2024: viele Todesopfer und hohe Kosten Dreizehn Todesfälle und 905 Mio. Franken Schäden: Das ist die Bilanz der Unwetter 2024, wie die jährliche Auswertung durch die WSL ergab.

Die Unwetter 2024 forderten in der Schweiz 13 Todesopfer, 3 Vermisste und verursachten Schäden von 905 Mio. CHF. Es handelt sich um die fünfthöchste Jahresschadenssumme seit Beginn der Erhebungen 1972. www.wsl.ch/de/news/unwe... @bafu.admin.ch #Schweiz #WSL #Naturgefahren #Forschung

We are at #IMC2025 in Innsbruck this week! Be sure not to miss our official #gaphaz session:
FS 3.148 - Glacier and permafrost risks in a changing climate (Wed. 13:30).
Convened by @jane-walden.bsky.social, #Marta-Chiarle and #Mylène-Jacquemart

#IMC25 - FS 3.109: The Changing Face of Mountain Regions: Climate Change Impacts on Alpine Mass Movements

#GAPHAZ members are well represented at #IMC2025 in #Innsbruck 🏔️ this week and there are several sessions directly related to #glacial and #periglacial #hazards! We will kick things off tomorrow afternoon with a session on #Alpine #Mass #Movements. In SOWI - HS 3!
imc2025.info/imc25/sessio...

Excellent compilation of information about the Tracy Arm #landslide and #tsunami in #Alaska ! Check out the information put together by @akearthquake.bsky.social! earthquake.alaska.edu/event/025a7d...
#glacier #warning #hazards #risk #science

Systematic attribution of heatwaves to the emissions of carbon majors - Nature Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.

🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".

www.nature.com/articles/s41...

Exciting new NSF-funded initiative to advance knowledge about natural hazards! We look forward to learning more and seeing exciting science coming out of this!

Today marks 60th anniversary of the Mattmark catastrophe, one of the deadliest glacier-related disaster in the Alps and largest catastrophe in Swiss modern history! 🧊🌊

30th Aug 1965: 2 Mm3 of Allalin Gl. broke off on Mattmark dam construction site, killing 88, many of whom were Italian immigrants 😭

Very nice overview of the recent #GLOF in Pakistan by @sgascoin.bsky.social!
There is so much going on these days, it’s great that various people in the community manage to find time to document these events! Fingers crossed that nobody was harmed. www.cesbio.cnrs.fr/multitemp/ra...

My rapid analysis of the recent GLOF (?) in Gupis, Gilgit-Baltistan www.cesbio.cnrs.fr/multitemp/ra...

Just when we thought NISAR would always „launch in two years“ it is finally here! Among other, it will provide valuable data on ground displacement to better understand and forecast landslides, also in high-mountain regions! Congrats to all involved!!
#nasa #stem #risk #hazards #landslide #data

Nice one @geophysichick.bsky.social! How far in advance did you register these?

Mendenhall River at record high as Juneau residents brace for crest of glacial flooding Officials say new barriers are holding, making for far less damage than during last year’s destructive glacial outburst from Suicide Basin.

Juneau officials say new flood-control barriers are holding, making for far less damage than during last year’s destructive glacial outburst from Suicide Basin.

There are a tremendous number of icebergs in Tracy Arm following the landslide-triggered tsunami. The reason for this is that ~300 meters of the north side of South Sawyer Glacier broke off and disintegrated into many many smaller icebergs as seen in @planet.com imagery 🧪⚒️

Congrats Caroline! Good luck in your new role!

The seismic signal from Tracy Arm in Alaska, which was probably generated by a large landslide. Data released by the Alaska Earthquake Center.

Satellite image of Tracy Arm inlet. Image copyright Planet Labs, used with permission. Image dated 7 August 2025.

It is likely that a large, tsunamigenic landslide occurred in Tracy Arm inlet, in Alaska on 10 August 2025 at 5:30 am.
Seismic trace from the Alaska Earthquake Center, Satellite image (dated 7 August 2025 - before the landslide) from @planet.com.
eos.org/thelandslide...

First cloud-free optical satellite imagery from @planet.com show the destruction of Dharali village in Uttarkashi, Uttarakhand, India. Unfortunately the source area in the mountains is still obscured by cloud and so the ultimate cause is still speculative. 🧪⚒️

Wow! That is really impressive indeed! 😱Hopefully nobody was in harm’s way?

Congrats!!!

Dramatic images reaching us from Dharali village in Uttarakhand in the last hours. The consequences of this debris flow look horrendous, and our thoughts are with the local community and emergency response. More details will surely emerge soon.
#cloudburst #hazard #debrisflow #remergency #risk

#IMC25 - The avalanche disaster in Blatten

🚨 #IMC2025 Update! 🚨
The abstract submission for the special session on the Nesthorn-Birchgletscher #hazard cascade is now open (and will be open until August 22). Details on 💻 submission and (late) registration can be found here:
imc2025.info/imc25/specia...
#Innsbruck #Blatten #STEM #risk #science

First Global Comparison of Glacier Mass Change: They’re All Melting, and Fast - Eos By systematically assessing data gathered by different methods, researchers refined estimates of global glacier melt and its contribution to sea level rise.

The first global comparison of glacier mass change reveals a global loss of 273 billion tonnes per year, an amount equivalent to what the entire human population on Earth drinks in 30 years. 🧪

Managing Director ETH Swiss GeoLab We look forward to receiving your online application with the following documents before 28 July 2025:

⚠️Job Alert!⚠️ Are you a into remote sensing? Do you want to advance the fusion of remote sensing 🛰️ and environmental data 💻? Check out this cool job at @ethz.ch's new 🇨🇭Swiss GeoLab!
jobs.ethz.ch/job/view/JOP...
#job #stem #science #data #hazards #climatechange #innovation @eth-eaps.bsky.social