|
Dave Petley@davepetley.bsky.social |
219 followers 58 following 140 posts
Vice-Chancellor at the University of Hull in England. Landslides, hazards, risk, vulnerability and resilience, plus a bit of Coventry City. #pusb
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 6 July 2024, a landslide occurred at an unlicenced gold mining site at Tulabolo in Sulawesi, killing 58 people. Drone imagery shows the scale and impact of the failure:-
eos.org/thelandslide...
0 replies 0 reposts 2 likes
|
Marc-André Brideau
@mabrideau.bsky.social
[ View ] |
As part of the 14th International Symposium on Landslides field trip I visited the La Séchiliènne Landslide. Great to see this site after reading so many papers on it.
0 replies 1 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A brilliant new study (Bottelin and Baillet 2024) in the journal Geophysical Research Letters has used passive seismic monitoring to explore failure processes in the La Praz landslide in France:- eos.org/uncategorize...
0 replies 1 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new paper in the International Journal of Erosion Control Engineering (Lee et al. 2024) uses examples from South Korea to highlight the growing risk from debris flows in urban environments:- eos.org/thelandslide...
0 replies 0 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Agreed, in the linked blog post, I suggest that this is primarily El Nino and climate change having a joint impact.
0 replies 0 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
In the first half of 2024, I have recorded 310 fatal landslides, which have killed 2,315 people. A total of 83 fatal landslides occurred in June alone. This number of fatal landslides greatly exceeds any other year in my dataset:- eos.org/thelandslide...
Image from Planet Labs.
0 replies 5 reposts 6 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Last week marked the 50th anniversary of the 28 June 1974 Quebrada Blanca landslide disaster in Colombia, which killed between 300 and 600 people. eos.org/thelandslide...
The image of the site from is from the Servicio Geologico Colombiano.
0 replies 1 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new paper in the Bulletin of Engineering Geology & the Environment (Bourenane and Mezouar 2024) describes the 26 millon cubic metre El Kherba landslide in Algeria, which was reactivated by the 7 August 2020 Mw=4.9 Mila earthquake:- eos.org/thelandslide...
0 replies 0 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
The main pollution concern is cyanide, which is used in the leaching process
1 replies 1 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
New images have emerged that show the aftermath of the 24 June 2024 heap leach landslide at Eagle Mine in Canada. I describe these in more detail in a blog post:-
eos.org/thelandslide...
Base landslide image tweeted by @TrevAHall
0 replies 3 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Very high quality aerial images published online by Swisstopo allow an initial analysis of the possible causes of the deadly 21 June 2024 Sorte debris flow in Switzerland, which killed three people:- eos.org/thelandslide...
0 replies 1 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Satellite images by Planet Labs show that a c.1.3 km long landslide has occurred at a heap leach pad at Eagle Gold Mine in the Yukon, Canada:- eos.org/thelandslide...
0 replies 1 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 21 June 2024, a major debris flow struck houses in Sorte in Switzerland. Three people are believed to have been killed.
eos.org/thelandslide...
1 replies 3 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
At Longiarù in the Dolomite region of northern Italy, a slow moving mudflow is threatening a village. Over 50 houses have been evacuated:- eos.org/thelandslide...
0 replies 2 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new study (Liu et al, 2024) in the journal Landslides documents an extreme rainfall event on 4 July 2023, which triggered almost 1,000 landslides in Wanzhou, China, killing 19 people and generating losses of about US$3 billion:
eos.org/thelandslide...
0 replies 2 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
At about 8 pm on 13 June 2024, a failure occurred in the embankment wall of the Chinchorro tailings storage facility, close to the village of Peñablanca in the Valparaíso region of Chile:- eos.org/thelandslide...
0 replies 0 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
An excellent new paper in the journal Landslides highlights basal erosion as the key factor in the 330 cubic metre rock topple that killed 10 people in 2022 at Furnas Reservoir in Brazil:- eos.org/thelandslide...
0 replies 0 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Teams dispatched to the site of the 24 May 2024 Kaokalam landslide in Papua New Guinea have indicated that it is part of a larger failure.
eos.org/thelandslide...
0 replies 1 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 6-8 June 2024, a spectacular landslide developed on a fill embankment on State Highway 22 on the Teton Pass in Wyoming, USA, closing the road:- eos.org/thelandslide...
Image from the Wyoming Department of Transport.
0 replies 1 reposts 3 likes
|
Bill Haneberg
@haneberg.bsky.social
[ View ] |
As a geohazard expert and former geological survey director, I find it difficult to responsibly answer questions about individual landslides, floods, sinkholes, etc being caused by climate change. But, careful analysis of trends can speak to that issue (as well as other factors like land use).
0 replies 3 reposts 4 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
The number of fatal landslides in 2024 continues to be much higher than in any previous recorded year. The reasons are not clear, but may be related to the unprecedented high global surface air temperature and global sea surface temperature.
eos.org/thelandslide...
#climatechange #globalwarming
0 replies 6 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
The Swiss Seismological Service (SED) has started identifying signals that it suspects were associated with mass movements:- eos.org/thelandslide...
0 replies 0 reposts 6 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Satellite company Black Sky has collected a set of brilliant high resolution images of the site of the 11 May 2024 Siana tailings failure, Philippines:- eos.org/thelandslide...
0 replies 1 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A first analysis of the 24 May 2024 landslide at Kaokalam in Enga province, Papua New Guinea, which is reported to have killed at least 100 people:-
eos.org/thelandslide...
0 replies 5 reposts 4 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new paper (Shi et al 2024) suggests that the destruction of the Bronze Age settlement of Lajia in China was caused by an earthquake ripple hazard - i.e. a coseismic flowslide.
eos.org/thelandslide...
0 replies 0 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new paper (Shi et al. 2024) has just been published in the journal Scientific Reports, describing the "Jishishan earthquake ripple hazard", a fascinating coseismic liquefaction-induced flowslide that occurred in December 2023:- eos.org/thelandslide...
0 replies 0 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
It's global.
0 replies 0 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Fatal #landslides continue to occur at an unprecedented rate this year. The black line on this graph is the cumulative number of fatal landslides in 2024, by month, up to the end of April. The grey lines are the same data for previous years.
Coseismic landslides are excluded. 2024 is exceptional.
1 replies 13 reposts 24 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Satellite images from Capella Space and Planet Labs cast light on the 11 May 2024 tailings failure at Siana in Surigao del Norte, Philippines:- eos.org/thelandslide...
0 replies 1 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Images from Planet Labs show the extreme impacts of the rainfall-induced #flooding that affected the north of #Afghanistan on 10 - 11 May 2024. At least 330 people have been killed and >5000 houses were damaged or destroyed:-
eos.org/thelandslide...
0 replies 1 reposts 0 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A Planet Labs satellite image shows that the 29 April 2024 Mai Mahiu disaster in Kenya was caused by a channelised debris flow, which was formed from an extraordinary concentration of shallow landslides in the Kijabe Hills. About 130 people were killed:- eos.org/thelandslide...
0 replies 2 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 11 May 2024, a major #tailings storage facility (TSF) landslide occurred at Siana in Surigao del Norte, Philippines.
I've put together an initial analysis:- eos.org/thelandslide...
This appears to be a failure in an old, inactive TSF, although the mine itself has reopened recently. #Mining
0 replies 1 reposts 3 likes
|
|
Bill Haneberg
@haneberg.bsky.social
[ View ] |
Or in just about any area susceptible to landslides, just as is indiscriminate cutting into slopes. The key is always to understand the geological and/or geomorphological context through mapping and site characterization instead of blindly assuming—hoping—there will be no problems (until there are).
0 replies 1 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Footage captured during the event, and by drone afterwards, hints that the storage of crushed rock on top of the peat might have triggered the landslide. This is a known, and entirely avoidable, hazard in peatland areas.
2 replies 0 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 7 May 2024, a peat landslide occurred at the site of the under-construction Viking Windfarm in Shetland in northern Scotland. The event was captured on video:- eos.org/thelandslide...
1 replies 1 reposts 8 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
On 22 July 2021, high temperatures and heavy rainfall triggered the 8 km long Xiao Dongsuo debris flow on the Tibetan Plateau:- eos.org/thelandslide...
The landslide is described in a paper (Jiang et al. 2024) in the journal Landslides:- link.springer.com/article/10.1...
0 replies 0 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Landslides in Art Part 35: "Landslide in Front of the Hodogaya Tunnel on the Tōkaidō (1924)" by Oda Kanchō, a beautiful colour woodblock that depicts a failure in the aftermath of the M=7.9 1 September 1923 Great Kantō earthquake in Japan:- eos.org/thelandslide...
0 replies 0 reposts 4 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
The 1 May 2024 fill slope failure on the Meilong Expressway in Guangdong, China, is now known to have killed 36 people. The deaths occurred when cars plunged into the landslide scar in the dark. Some caught fire:- eos.org/thelandslide...
Picture from Xinhua News
0 replies 2 reposts 3 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
The 29 April 2024 Mai Mahiu landslide disaster in Kenya is now believed to have killed or left missing over 130 people:- eos.org/thelandslide.... It appears that heavy rainfall triggered multiple landslides that then formed a catastrophic channelised debris flow.
Image from NTV Kenya.
0 replies 1 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A new open access paper in the journal Landslides (Brook and Nicoll 2024) describes mass movements triggered by the record-breaking 2023 storms in Auckland, New Zealand. Two storms triggered over 140,000 landslides, costing 3.4% of New Zealand's GDP.
eos.org/thelandslide...
Image by GNS Science
1 replies 6 reposts 7 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Satellite images by Planet Labs suggest that the coseismic landslides on the Shakadang Trail, Taroko, Taiwan remain active due to aftershocks. Tragically, two victims of the earthquake remain missing in this area:- eos.org/thelandslide...
1 replies 3 reposts 6 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Heavy rainfall in Guangdong Province in recent days has triggered multiple landslides around Jiangwan in China:-
eos.org/thelandslide...
Image from Southcn.com
1 replies 2 reposts 2 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A valley blocking landslide from the 3 April 2024 Mw=7.4 Hualien earthquake:- eos.org/thelandslide...
Images from @Planet and the Taiwan Forestry and Nature Conservation Agency.
0 replies 1 reposts 1 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A webcam at the #Corvatsch skiing station captured the 14 April 2024 Piz #Scerscen rock avalanche:- eos.org/thelandslide...
Images downloaded by Silvan Leinss from Gamma Remote Sensing
#pizscerscen #landslide #Alps
0 replies 0 reposts 4 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A significant landslide appears to have occurred during heavy rainfall on 6 - 7 April 2024 at Araren pit in the Toka Tindung gold mining area, #Indonesia:- eos.org/thelandslide...
Images by Planet Labs #indonesia #landslide #goldmine #Mining
0 replies 0 reposts 1 likes
|
Melaine Le Roy
@subfossilguy.bsky.social
[ View ] |
Three years ago in January 2021 a previous (smaller!) event (originating from Piz Roseg west flank) affected the same sector
twitter.com/subfossilguy...
0 replies 2 reposts 5 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
A range of amazing images have now emerged of the 5 km long, 14 April 2024 Piz Scerscen rock avalanche in Switzerland.
eos.org/thelandslide...
These images by, and copyright of:
Amt für Naturgefahren, Kanton Graubünden, Ch;
Silvan Leinss.
Used with permission.
0 replies 1 reposts 4 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Early in the morning of 14 April 2024, a large rock avalanche occurred on the flanks of Piz Scerscen in Switzerland:- eos.org/thelandslide...
Initial estimates are that it had a volume of 1 million M3 and a runout of 5 km.
Image from the Swiss Alpine Club.
0 replies 4 reposts 13 likes
|
|
Dave Petley
@davepetley.bsky.social
[ View ] |
Very interesting dashcam footage has emerged of rockfalls triggered by the 3 April 2024 Mw=7.4 Hualien earthquake. I've collected together the various bits of footage on social media in a blog post, plus a segment taken from an aircraft overflying the mountains:- eos.org/thelandslide...
0 replies 0 reposts 5 likes
|
|
Bill Haneberg
@haneberg.bsky.social
[ View ] |
Whether 7.2 or 7.4, it was a major landslide event. Maybe the only good thing with regard to landslides is that this is Taiwan's dry season. Some slopes—especially shallow colluvium responsive to individual storms and seasonal rainfall—may have been less susceptible to sliding than during wet times.
0 replies 1 reposts 4 likes