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
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.
November 7, 2025 at 8:51 AM
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.
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...
"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...
November 3, 2025 at 12:55 PM
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...
"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...
Tru, but great care is needed regarding colour vision deficiency. Multi-colour scales present real challenges for many people.
October 25, 2025 at 10:20 AM
Tru, but great care is needed regarding colour vision deficiency. Multi-colour scales present real challenges for many people.
There's a body of academic literature on this problem, which is called the terrain reversal effect. See for example:-
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
Comparing the terrain reversal effect in satellite images and in shaded relief maps: an examination of the effects of color and texture on 3D shape perception from shading
Terrain reversal effect (TRE) causes reversed 3D shape perception in satellite images and shaded relief maps (SRMs), and introduces difficulties in identifying landforms such as valleys and ridges....
www.tandfonline.com
October 25, 2025 at 5:46 AM
There's a body of academic literature on this problem, which is called the terrain reversal effect. See for example:-
www.tandfonline.com/doi/full/10....
www.tandfonline.com/doi/full/10....
It's actually a mirror image of the Tessina landslide.
October 22, 2025 at 8:18 PM
It's actually a mirror image of the Tessina landslide.