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GAPHAZ - Glacier and Permafrost Hazards in Mountains

@gaphaz.bsky.social

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A Scientific Standing Group of the International Association of Cryospheric Sciences (IACS) and the International Permafrost Association (IPA). Here for networking, collaboration, exchange. Find us at gaphaz.org!

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Apr 18

Welcome to gaphaz! Follow us here for all things glacial and periglacial hazards. If this topic interests you, become a gaphaz member by signing up to our mailing list: send an email with the text "subscribe GAPHAZ-members" in the body (no other text or signatures etc.) to [email protected]

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Emily Lakdawalla, Uranus Expert @elakdawalla.bsky.social · 13d

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...

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.

www.jpl.nasa.gov

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Kristen Cook @kristencook.bsky.social · 15d

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 · 15d

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

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.

www.wsl.ch

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 24d

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 · 24d

#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...

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

imc2025.info

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · 24d

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

Detail | Alaska Earthquake Center

earthquake.alaska.edu

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Yann Quilcaille @yannquilcaille.bsky.social · 28d

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

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

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.

www.nature.com

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Sep 4

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!

CLaSH-an NSF Center for Land Surface Hazards @clashgeohazards.bsky.social · Sep 4

🎉 It’s official! Today, we announce the launch of CLaSH: Center for Land Surface Hazards an NSF supported initiative to advance the science of cascading geohazards to enable a resilient society.

Follow along as we share updates, opportunities, research, and collaborations! 🌎✨ #CLaSH #NSF

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Melaine Le Roy @subfossilguy.bsky.social · Aug 30

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 · Aug 25

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...

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

The

www.cesbio.cnrs.fr

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Simon Gascoin @sgascoin.bsky.social · Aug 24

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 · Aug 16

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

Dr. Eric J. Fielding, PhD @ericjfielding.bsky.social · Aug 16

Final deployment of the NASA-ISRO SAR (NISAR) satellite, the 12-meter radar antenna reflector was successfully completed August 15. Congratulations to all people involved in this important milestone of the mission, in USA and India. #NASA #ISRO #SAR #satellite #NISAR www.jpl.nasa.gov/news/giant-r...

Giant Radar Antenna Reflector on NASA-ISRO Satellite in Full ‘Bloom’

Seventeen days after NISAR’s launch from southeastern India, an essential piece of science hardware has unfurled in orbit.

www.jpl.nasa.gov

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Aug 14

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

Jackie Caplan-Auerbach @geophysichick.bsky.social · Aug 13

This is really an extraordinary event: landslide, glacial failure, tsunami. But to me, the most exciting part is the sequence of tiny earthquakes that occurred before the slide.

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Dr. Ezgi Karasozen @ezgikarasozen.bsky.social · Aug 13

It has been a busy couple of days! There was a large landslide and tsunami in SE Alaska, in Tracy Arm, Sunday morning. Luckily, no injuries or casualties were reported. This region is outside of our current landslide coverage, but we were able to get a quick location after hearing about the event. 🧵

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Anchorage Daily News @adn.com · Aug 13

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.

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.

www.adn.com

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Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · Aug 13

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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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Aug 12

Congrats Caroline! Good luck in your new role!

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Dave Petley @davepetley.bsky.social · Aug 11

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 · Aug 7

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 · Aug 7

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

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Aug 6

Congrats!!!

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Aug 6

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

Melaine Le Roy @subfossilguy.bsky.social · Aug 5

This is what looks a village hit by several millions m3 debris flow... 😱🌊

View over remains of the Dharali village from the left bank of the Khera Gad river, when Army arrived on site

Via @manaman_chhina

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Jul 24

🚨 #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

#IMC25 - The avalanche disaster in Blatten

imc2025.info

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David Ho @davidho.bsky.social · Jul 23

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. 🧪

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.

eos.org

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GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Jul 21

⚠️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

Managing Director ETH Swiss GeoLab

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

jobs.ethz.ch

GAPHAZ - Glacier and Permafrost Hazards in Mountains @gaphaz.bsky.social · Jul 21

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-...

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...