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Dave Petley

@davepetley.bsky.social

Vice-Chancellor at the University of Hull in England. Landslides, hazards, risk, vulnerability and resilience, plus a bit of Coventry City. #pusb #Breturn

2,415 Followers  |  323 Following  |  555 Posts  |  Joined: 23.09.2023  |  2.2093

Latest posts by davepetley.bsky.social on Bluesky

Possibly, others will be better placed to comment on this.

07.12.2025 02:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
USGS landslide potential maps for the Hubbard Glacier earthquake.  It shows an area of significant potential.

USGS landslide potential maps for the Hubbard Glacier earthquake. It shows an area of significant potential.

This is the current USGS landslide potential maps from the M=7.0 #Hubbard #Glacier #earthquake, which occurred in the last few hours. It shows high landslide potential in the area of Mount Vancouver. The first set of satellite images are going to be interesting.
earthquake.usgs.gov/earthquakes/...

07.12.2025 01:49 β€” πŸ‘ 29    πŸ” 10    πŸ’¬ 2    πŸ“Œ 0
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Magnitude 6.8 earthquake ten minutes ago along Yukon/Alaska border on the Fairweather Fault. I am guessing this will result in some big landslides. πŸ§ͺβš’οΈ
earthquake.usgs.gov/earthquakes/...

06.12.2025 20:52 β€” πŸ‘ 86    πŸ” 30    πŸ’¬ 2    πŸ“Œ 4
Planet Labs images of shallow landslides that have transitioned into channelised debris flows in West Sumatra, Indonesia.

Planet Labs images of shallow landslides that have transitioned into channelised debris flows in West Sumatra, Indonesia.

Or these multiple shallow landslides that have become channelised debris flows in the upland areas. The image is at: [-0.82127, 100.50888].

04.12.2025 04:22 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Planet Labs image of a landslide in West Sumatra after the recent heavy rainfall.

Planet Labs image of a landslide in West Sumatra after the recent heavy rainfall.

There are so many examples to draw upon. This one is to the east of the city of Padang [-0.89489, 100.43581]. The landslide is about 1 km long.

04.12.2025 04:19 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
Planet Labs satellite image of a part of West Sumatra after the recent landslides.

Planet Labs satellite image of a part of West Sumatra after the recent landslides.

Planet Labs satellite image of a part of West Sumatra after the recent landslides.

Planet Labs satellite image of a part of West Sumatra after the recent landslides.

These are Planet Labs satellite images of the aftermath of the deadly #landslides in West Sumatra, Indonesia following intense rainfall. These are not isolated examples by any means. At least 700 people have been killed across the country.

04.12.2025 03:56 β€” πŸ‘ 19    πŸ” 9    πŸ’¬ 1    πŸ“Œ 0
Planet Labs image of landslides triggered by intense rainfall in Indonesia.

Planet Labs image of landslides triggered by intense rainfall in Indonesia.

The underlying cause of the dreadful disaster in #Indonesia may have been landslides triggered by intense rainfall, which transitioned into channelised debris flows and mudflows. This Planet Labs imagery shows an area south of Padang Pajang in Sumatra. There are many, many landslides.

02.12.2025 11:24 β€” πŸ‘ 18    πŸ” 6    πŸ’¬ 0    πŸ“Œ 1
Post image

Impressive rock avalanche on the Dent de Crolles (2062 m asl) in the Chartreuse Massif, French Prealps yesterday 😲

Release area ~1800 m asl

πŸ“· Sylvain Thiabaud

29.11.2025 10:46 β€” πŸ‘ 62    πŸ” 22    πŸ’¬ 0    πŸ“Œ 2
The fuel truck shortly after htting the plane.

The fuel truck shortly after htting the plane.

And the gash in the cowling of number 1 engine that was the result.

And the gash in the cowling of number 1 engine that was the result.

A somewhat unexpected trip to the CBS for me today. I was supposed to fly to Hong Kong yesterday from Manchester, thwarted by a refuelling truck hitting my aircraft. A very unhelpful #Emirates eventually rebooked me tonight from Heathrow. It would be rude not to take in the match en route! #pusb

29.11.2025 08:12 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Another TSF failure in Zambia, Mwense District. | Holy Pola, P.Eng | 21 comments Another TSF failure in Zambia, Mwense District. | 21 comments on LinkedIn

Another tailings storage facility failure has occurred, this time in Mwense District in Zambia.
www.linkedin.com/posts/holy-p...

27.11.2025 18:05 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Planet imagery of the 4 November 2025 landslide at Mae Moh Mine Over the weekend, Planet captured almost perfect imagery of the 4 November 2025 landslide at Mae Moh Mine in Thailand.

Over the weekend, @planet.com captured almost perfect satellite imagery of the 4 November 2025 landslide at Mae Moh Mine in Thailand.
eos.org/thelandslide...

24.11.2025 08:02 β€” πŸ‘ 14    πŸ” 7    πŸ’¬ 1    πŸ“Œ 0

Tune in for tonight's news @ctvnewscalgary.bsky.social (and probably every CTV station across the country) for an interview about landslides. tsunamis, and pipelines. @timmctv.bsky.social βš’οΈ

21.11.2025 20:05 β€” πŸ‘ 16    πŸ” 6    πŸ’¬ 1    πŸ“Œ 0
The aftermath of the 4 November 2025 landslide at Mae Moh Mine in Thailand. Image copyright Planet, captured on 15 November 2025, used with permission.

The aftermath of the 4 November 2025 landslide at Mae Moh Mine in Thailand. Image copyright Planet, captured on 15 November 2025, used with permission.

Imagery from @planet.com has captured the 4 November 2025 landslide at Mae Moh Mine in Thailand. It shows the failure was about 4.8 km long and 1.4 km wide. There appears to have been coal waste dumping on the area that failed in the weeks before the landslide.
eos.org/thelandslide...

20.11.2025 08:15 β€” πŸ‘ 12    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
Preview
New northwest pipeline risks hazard of landslide tsunamis Major Projects Office needs to be wary in its planning for pipeline projects to tidewater

I wrote about the under-appreciated hazard of landslide-triggered tsunamis, which need serious consideration in discussions of new pipelines from Alberta πŸ§ͺβš’οΈ
@theglobeandmail.com @davidebybc.bsky.social @natural-resources.canada.ca @mark-carney.bsky.social @ucalgaryscience.bsky.social

19.11.2025 17:26 β€” πŸ‘ 52    πŸ” 29    πŸ’¬ 4    πŸ“Œ 6
The aftermath of the 11 November 2025 landslide at Hongqi Bridge in Sichuan Province, China. Image captured by Blacksky and released via Twitter.

The aftermath of the 11 November 2025 landslide at Hongqi Bridge in Sichuan Province, China. Image captured by Blacksky and released via Twitter.

Satellite imagery from BlackSky shows the aftermath of the 11 November 2025 landslide at Hongqi Bridge in China.
eos.org/thelandslide...

17.11.2025 07:38 β€” πŸ‘ 29    πŸ” 9    πŸ’¬ 2    πŸ“Œ 2
NTU students talking at the welcome event.

NTU students talking at the welcome event.

It's a huge pleasure to be a part of my first #NTU open day today. As always, the students are the stars of the show.
#proudtobeNTU

15.11.2025 10:00 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A graphic, which shows an image of the Colosseum, a satellite and an AI brain with 'AI for Natural Hazards, Rome'. To the right is the BGS logo and the words 'join online: 8.30AM to 12PM GMT, Thursday 20th November'. Below is a QR code which links to the Eventbrite page.

A graphic, which shows an image of the Colosseum, a satellite and an AI brain with 'AI for Natural Hazards, Rome'. To the right is the BGS logo and the words 'join online: 8.30AM to 12PM GMT, Thursday 20th November'. Below is a QR code which links to the Eventbrite page.

πŸ—“οΈ Artificial Intelligence for Natural Hazards Workshop - Thursday 20th November

Are you an industry or research institution interested in the applications of AI in Earth Observation and natural hazards?

11.11.2025 12:02 β€” πŸ‘ 6    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0
The book about the Seafront landslide in New Zealand.

The book about the Seafront landslide in New Zealand.

Subsequently named the Seafront landslide (I got in trouble once for failing to call it that). And immortalised in children's literature!

14.11.2025 18:21 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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The 11 November 2025 landslide at Hongqi Bridge in China The 11 November 2025 landslide at Hongqi Bridge in China. This occurred during impoundment of the 312 m high Shuangjiangkou Dam.

On 11 November 2025, a massive landslide at Hongqi Bridge in Sichuan Province, China occurred during impoundment of the 312 m high Shuangjiangkou Dam. A major highway bridge was destroyed.
eos.org/thelandslide...

14.11.2025 08:28 β€” πŸ‘ 24    πŸ” 4    πŸ’¬ 0    πŸ“Œ 2
Car blocking the tram tracks in Sheffield.

Car blocking the tram tracks in Sheffield.

In #Sheffield, someone has had a bad morning. Completely stuck, blocking the tram tracks. They've driven over 100 metres off road along the tracks to get to this point.

13.11.2025 07:14 β€” πŸ‘ 6    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

The number of fatal landslides to 2 September 2025, displayed in pentads. For comparison, the long term mean (2004 to 2016) from Froude and Petley (2018) and the exceptional year of 2024 are also shown.

The number of fatal landslides to 2 September 2025, displayed in pentads. For comparison, the long term mean (2004 to 2016) from Froude and Petley (2018) and the exceptional year of 2024 are also shown.

In August 2025, I recorded 104 fatal landslides, a record total number of landslides for August. 2025 is shaping up to be a terrible year for fatal landslides, with the cumulative total to that point being close to the highest year, in 2024.
eos.org/thelandslide...

11.11.2025 07:15 β€” πŸ‘ 9    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Google Earth image from 2017 showing Pikillaqta (note the different spelling on Google Earth), and the projected source of the debris flow.

Google Earth image from 2017 showing Pikillaqta (note the different spelling on Google Earth), and the projected source of the debris flow.

A new paper in the journal Geoarchaeology (Garcia et al, 2025) hypothesises that an earthquake-induced debris flow in about 900 AD may have played a role in the abandonment of the archaeological site at Pikillaqta in Peru.
eos.org/thelandslide...

10.11.2025 07:51 β€” πŸ‘ 10    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

This is not the first such failure at Mae Moh mine. In a paper in the journal Engineering Geology, Hoy et al. (2024) describe a 1.2 km long waste dump failure on 18 March 2018. The landslide looks to have been remarkably similar to the event this week.

07.11.2025 08:51 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The 4 November 2025 landslide at Mae Moh Mine in Thailand. Image released by EGAT.

The 4 November 2025 landslide at Mae Moh Mine in Thailand. Image released by EGAT.

On 4 November 2025, a very large landslide in a coal waste slope at Mae Moh Mine in Thailand, causing extensive damage.
It appears that the landslide was associated with very heavy rainfall.
eos.org/thelandslide...

07.11.2025 08:41 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
The landslide at Mae Moh mine in Thailand.

The landslide at Mae Moh mine in Thailand.

This enormous landslide occurred at the Mae Moh mine in Thailand at about 3 am on 4 November 2025. The trigger appears to have been heavy rainfall. Mae Moh is an enormous mine site at [18.3422, 99.7279].
The image was released by the operator, EGAT.

05.11.2025 08:06 β€” πŸ‘ 9    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0
The aftermath of the 31 October 2025 landslides at Chesongoch, in Elgeyo Marakwet county, Kenya. Image copyright Planet, used with permission, dated 3 November 2025.

The aftermath of the 31 October 2025 landslides at Chesongoch, in Elgeyo Marakwet county, Kenya. Image copyright Planet, used with permission, dated 3 November 2025.

Satellite images from @Planet show the series of debris flows on 31 October 2025 at Chesongoch in Kenya, which killed about 50 people.
eos.org/thelandslide...

04.11.2025 08:06 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The front cover of the 2021 Task Force Report.

The front cover of the 2021 Task Force Report.

The Network Rail Task Force Review of Earthworks Management (I was a member) provides detail on why so many landslides occur on the UK rail system.
"Network Rail have inherited and manage 190,000 earthworks assets...The vast majority are over 100 years old."
www.networkrail.co.uk/wp-content/u...

03.11.2025 12:55 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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West Coast Main Line: Train derails in Cumbria with 'days' of disruption expected The train was carrying around 85 passengers when it derailed at 06:10 - Avanti West Coast advises customers not to travel north of Preston today.

A train has derailed near to Shap in Cumbria in northern England after it struck a landslide. Fortunately, it remained upright, so there is no loss of life. Some people have suffered minor injuries.
www.bbc.co.uk/news/live/cz...

03.11.2025 12:47 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Holy moly - this glacier detachment in Tajikistan is WILD. It appears that there was a large piece of glacier ice much farther down the valley from a first detachment which then got pushed by a second soon thereafter. 🧡@planet.com @davepetley.bsky.social πŸ§ͺβš’οΈ

01.11.2025 14:07 β€” πŸ‘ 43    πŸ” 18    πŸ’¬ 2    πŸ“Œ 1
A landslide reportedly triggered by the 3 November 2025 earthquake in Afghanistan. Image from a video posted to Twitter by Jahanzeb Khan.

A landslide reportedly triggered by the 3 November 2025 earthquake in Afghanistan. Image from a video posted to Twitter by Jahanzeb Khan.

Some videos have emerged from Afghanistan, reportedly showing landslides and rockfalls triggered by the M=6.3 earthquake early this morning. The road between Mazar and Kabul is reportedly blocked, which will impact the delivery of emergency assistance.
eos.org/thelandslide...

03.11.2025 07:40 β€” πŸ‘ 13    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

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