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landslides

The upper part of the landslide on Kleiner Nesthorn above Blatten in Switzerland.
Posted inThe Landslide Blog

The 21 May 2025 update on the landslide threatening Blatten in Switzerland

by Dave Petley 21 May 202521 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognised as a world leader in the study and management of landslides. News this morning from Blatten in Switzerland is that the landslide on Kleiner Nesthorn has continued to develop. Blue News reports that: “The situation in Blatten in the Valais Lötschental remained tense […]

Webcam image of the deforming slope at Blatten in Switzerland.
Posted inThe Landslide Blog

The incipient major rock slope failure at Blatten in Switzerland

by Dave Petley 20 May 202520 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. In Switzerland, a dramatic rock slope failure is developing above Blatten [46.4128, 7.7987], a village located in Vallais Canton. Blue News is providing regular updates on a dedicated website. The drama started […]

Google Earth map of the area studied by Zhang et al. (2025) to examine the role of geological complexity in landslide distribution.
Posted inThe Landslide Blog

Geological complexity as a way to understand the distribution of landslides

by Dave Petley 15 May 202515 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. Over the course of my career, I have read many papers (and indeed, written a few) that have tried to explain the distribution of landslides based upon combinations of factors that we […]

Posted inThe Landslide Blog

Images of the source of the 28 April 2025 landslide / GLOF at Vallunaraju in Peru

by Dave Petley 8 May 20258 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. A few days ago I highlighted the severe landslide and GLOF that occurred on the flanks of Vallunaraju in Peru, on 28 April 2025, which caused substantial damage and at least two […]

Temporal distribution of rockfall events and fatalities in Spain within the last 220 years.
Posted inThe Landslide Blog

Patterns of fatal non-seismic rockfalls in Spain

by Dave Petley 6 May 20256 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. A fascinating new paper (Corominas et al. 2025) has just been published in the journal Geoenvironmental Disasters that describes the compilation and analysis of a new dataset on fatal non-seismic rockfalls in […]

Planet Labs image of the downstream impacts of the 28 April 2025 Glacial Outburst Flood (GLOF) / landslide at Vallunaraju in Peru.
Posted inThe Landslide Blog

The 28 April 2025 Glacial Outburst Flood (GLOF) / landslide at Vallunaraju in Peru

by Dave Petley 2 May 20252 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. On 28 April 2025, a major debris flow travelled down a channel from a major mountain, Vallunaraju, striking the communities lower down the slope. At least 100 houses were destroyed and two […]

Landslides triggered during the 1954 rainfall event on the Amalfi Coast in Italy.
Posted inThe Landslide Blog

The 25 October 1954 landslide disaster on the Amalfi Coast of Italy

by Dave Petley 30 April 202530 April 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. I have frequently highlighted the growing impact of multiple landslide events triggered by extreme rainfall around the world. Whilst there is little doubt that such events are becoming more common, they have […]

The Browney Curve landslide site.
Posted inThe Landslide Blog

Remediating the Browney Curve landslide in County Durham

by Dave Petley 11 April 202511 April 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. Rail Advent has a very nice article that describes the now completed repair of the Browney Curve landslide on the East Coast Mainline railway line in England. This is a site that […]

The 8 May 2022 Baiyan rock avalanche in Bijie, Guizhou. Image from 163.com.
Posted inThe Landslide Blog

The 8 May 2022 Baiyan rock avalanche in Guizhou, China

by Dave Petley 10 April 202510 April 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. On 8 May 2022, the catastrophic Baiyan rock avalanche occurred in Zhijin County, which is located in Guizhou Province, China. The digital lat/long is [26.63771, 105.69200]. I described this event at the time […]

The vehicle on which the two people were travelling, found 800 m away from the impact point San Felice a Cancello. Image from the Italian Fire Brigade: www.vigilfuoco.tv.
Posted inThe Landslide Blog

The 27 August 2024 post-fire debris flows in San Felice a Cancello, Italy

by Dave Petley 9 April 20259 April 2025

Guest post by Giuseppe Esposito and Stefano Gariano The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. In a recent article published in the journal Landslides, Esposito and Gariano (2025) describe the first post-fire debris flow event with fatal consequences recorded […]

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