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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 07/09/2026

As more information about the #rasuwa #disaster surfaces, we are faced with the realization that it will rank among the deadliest #glacier related disasters worldwide 💔 If you want to understand what we know, check out the @clashgeohazards.bsky.social storyboard: storymaps.arcgis.com/stories/f2b2...

storymaps.arcgis.com

August 2026 Nepal Trishuli Flood

Center for Land Surface Hazards (CLaSH)

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 27/08/2026

Our thoughts are with local communities and first responders. The extent of the #disaster is mind boggling. To support #rescue efforts, consider donating, e.g., to www.redcross.ch/en or any other organization supporting the efforts.

redcross.ch

Swiss Red Cross: Help for people in need

The Swiss Red Cross works to improve the lot of disadvantaged and vulnerable people throughout Switzerland and around the world.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 26/08/2026

We are heartbroken 💔 to see the images and videos coming out of Nepal this morning. Initial footage suggests this was a hugely destructive event originating in glacierized terrain. Our thoughts are with all affected communities and emergency responders. #cryohazards #rasuwa #glaciers #hazards

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 17/08/2026

What does GAPHAZ do?🏔️ What should GAPHAZ do? These are important questions for us as we think about how we want to serve the (peri)glacial hazards community in the coming years. Have an opinion?💡Help us by filling out our survey at 📝 forms.gle/YdSfjntRAAmu...

forms.gle

GAPHAZ survey

Dear GAPHAZ community, Thank you for taking the time to fill out this survey. The aim of this survey is to find out how GAPHAZ can best serve the cryospheric hazards community in the coming years.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 21/04/2026

The study presents an inventory of hanging glaciers in the Alaknanda basin (Garhwal Himalaya) and the authors performed runout simulations for select glaciers that could impact infrastructure. Their findings highlight the need for targeted monitoring and risk-informed planning.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 21/04/2026

✨New Publication Highlight✨ Check out the recent work by Nandu Krishnan and colleagues, including @glacier-hazards.bsky.social:📄 "Basin-scale inventory and exposure assessment of hanging glaciers, Central Himalaya." www.nature.com/articles/s44... #risk #hazards #glaciers #ClimateChange #Himalaya

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Dave Petley @davepetley.bsky.social · 17/03/2026

Since 1968 there have been over 1,400 fatal landslides in Nepal, killing over 6,000 people. The data shows that the impacts are increasing with time. eos.org/thelandslide...

The number of fatal landslides each year since 1968 in Nepal. The grey line is a four year retrospective running mean. Author's own dataset.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 16/03/2026

Registration is open for the 3rd Asian Conference on #Permafrost (ACOP) 2026 in Ulaanbaatar, #Mongolia, from June 28 to July 2, 2026! The conference boasts a rich program, including several sessions on #hazards and #risks of interest to the #gaphaz community! event.fourwaves.com/acop2026/pages

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 12/01/2026

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

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Valérie Masson-Delmotte @valmasdel.bsky.social · 16/12/2025

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 17/11/2025

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

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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 14/11/2025

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/...

nytimes.com

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.

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Simon Cook 🏔❄🌊 @glaciocook.bsky.social · 17/11/2025

📘 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...

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Emily Lakdawalla 🏳️‍⚧️ Uranus Expert @elakdawalla.bsky.social · 25/09/2025

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...

jpl.nasa.gov

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.

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Kristen Cook @kristencook.bsky.social · 23/09/2025

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.

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.

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WSL Umweltforschung @wslresearch.bsky.social · 24/09/2025

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

wsl.ch

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.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 14/09/2025

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

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 14/09/2025

#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...

imc2025.info

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

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 14/09/2025

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

earthquake.alaska.edu

Detail | Alaska Earthquake Center

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 04/09/2025

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!

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Melaine Le Roy @subfossilguy.bsky.social · 30/08/2025

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 😭

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 25/08/2025

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...

cesbio.cnrs.fr

Rapid analysis of the GLOF in Gupis, Gilgit-Baltistan – Séries Temporelles

The

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Simon Gascoin @sgascoin.bsky.social · 24/08/2025

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

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 16/08/2025

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

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Anchorage Daily News @adn.com · 13/08/2025

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.

adn.com

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.

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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 13/08/2025

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 🧪⚒️

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Dave Petley @davepetley.bsky.social · 11/08/2025

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...

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.

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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 07/08/2025

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. 🧪⚒️

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 07/08/2025

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

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 06/08/2025

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

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 24/07/2025

🚨 #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

imc2025.info

#IMC25 - The avalanche disaster in Blatten

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David Ho @davidho.bsky.social · 23/07/2025

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. 🧪

eos.org

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.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 21/07/2025

⚠️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

jobs.ethz.ch

Managing Director ETH Swiss GeoLab

We look forward to receiving your online application with the following documents before 28 July 2025:

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 21/07/2025

Thinking about Early Warning Systems for mountain hazards? Here's an event that you might be interested in: Organized by colleagues in 🇦🇹 Austria it will bring together various experts and draws on the recent 🏔️ rock avalanche and 🧊 glacier collapse in 🇨🇭 Switzerland. www.stimson.org/event/early-...

stimson.org

Early Warning in the Cryosphere: Lessons in Monitoring from Blatten and Beyond • Stimson Center

This virtual event brings leading experts from academia and the private sector to examine the evolving challenges of developing early warning systems (EWS) for cryosphere-related hazards in mountain r...

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Marc-André Brideau @mabrideau.bsky.social · 17/07/2025

the new Landslide Mapping Guidelines from Engineers and Geoscientists British Columbia are now available. A useful document for geohazard practitioners in British Columbia (and beyond). tools.egbc.ca/Registrants/...

tools.egbc.ca

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HYCLIMM - Hydrology & Climate Impacts Group @hyclimm.bsky.social · 15/07/2025

👋 Hi, we are HYCLIMM – Hydrology & Climate Impacts in Mountain Regions – a research group at @slfdavos.bsky.social & @ethz.ch . We study #water & #climateextremes in mountains under #globalchange! ↪️ We’ll share updates on our work & team led by @manuelaibrunner.bsky.social

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Dave Petley @davepetley.bsky.social · 30/06/2025

An excellent new paper (Walden et al. 2025) examines the occurrence of accelerated movement in rock slope landslides in Alaska as adjacent glaciers melt. Some of the slopes, such as the one in the images below (at Barry Glacier), showed periods of pronounced acceleration. eos.org/thelandslide...

Google Earth image of the landslide at the Barry Glacier in Alaska in 2019.

The behaviour of the rock slope at the Barry Glacier in Alaska. Part of Figure 4 from Walden at al. (2025).
Key parts of the original caption:
"Landslide and glacier evolution at the study sites. Row 1: landslide velocities from ITS-LIVE (black circles, with uncertainty estimates) and manual feature tracking (gray bars). Stars indicate the onset of slope-wide deformation, triangles stand for crack opening, and diamonds mean both deformation and crack opening. Row 2: terminus retreat (dark blue) and location of the landslide along the glacier centerline (light-blue shading). Row 3: glacier thickness change rates (purple) and absolute ice thickness (yellow; right-hand axis) below the landslide. ... In all panels, light-red shading indicates the onset of landslide movement.

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 24/06/2025

🚨Session alert🚨 We will host a special session to discuss the 🏔️ Nesthorn-Birchglacier hazard cascade at IMC Innsbruck. Abstract submissions will open in July, registration will still be possible. imc2025.info/imc25/specia... Join us to discuss this extraordinary event! #hazards #glaciers #cascade

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INSTAAR @instaar.bsky.social · 06/06/2025

Alaskan rivers are rising and warming. In a new paper, researchers predict hydrologic and ecological shifts 50 years into the future. Dylan Blaskey led the study for INSTAAR's Arctic Rivers Project. Keith Musselman and Michael Gooseff are coauthors. buff.ly/tvDRzL6

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 03/06/2025

As the dust begins to settle over #Blatten, many from the #gaphaz community are gathering to try to better understand this event. Some of this preliminary information 📊 is now available in an updated #factsheet. Take a look! There is interesting science ahead, but our ❤️ remain with those affected!

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 30/05/2025

Access to unstable the deposit is not possible for anyone or anything, therefore technical interventions are not possible.

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ETH Zurich @ethz.ch · 30/05/2025

Wie genau kam es zum Gletscherabbruch, der zur bedauerlichen Verschüttung des Walliser Dorfes Blatten führte? Dieser Frage sind ETH-Forschende nachgegangen: ethz.ch/de/news-und-... #Blatten #Gletscher #Bergsturz #Birchgletscher

ethz.ch

Was ETH-Gletscherforschende über den Abbruch des Birchgletschers wissen

Am Mittwoch ist der Birchgletscher unter der Last von Fels- und Schuttmassen eingebrochen, die von Felsstürzen am Kleinen Nesthorn stammten. In einem Faktenblatt erläutern ETH-Forschende die Hintergrü...

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VAW Glaciology @vaw-glaciology.bsky.social · 30/05/2025

Every +0.1°C of global warming leads to ~2% more glacier ice loss. Sticking to the #ParisAgreement (+1.5°C) would preserve over half the ice compared to current policies (+2.7°C). This is the result of a new study based, led by Harry Zekollari, Lilian Schuster & several co-authors from our group.

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