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4 November 2010
The Rissa landslide – new (old) video available online
In April 1978 an remarkable quick clay landslide was caught in action by two amateur cameramen. A large section of this video has now appeared online.
18 September 2009
Extraordinary! Using a helicopter sledgehammer to clear loose rock from a cliff!
I thought I had seen everything until I saw this video! It is from Norway, showing an extraordinary method for removing a loose rock pillar from a high, steep cliff. The answer is obvious – just hang a 1.8 tonne block on a cable under the helicopter and bash the offending rock with your new sledgehammer. This must take very skillful flying. The most amazing thing is that it worked …
13 March 2009
Norwegian landslide – is this a quick clay slide?
Most people would probably not think of Norway as being hazard prone, but it does have two particular landslide issues. The first is that occasional large-scale failures occur on the walls of fjords. Given the height of these rock walls, these failures can be large and energetic, and sometimes trigger small scale tsunamis. The other is a strange type of failure known as a quick clay slide. Perhaps the best …
19 November 2008
Alesund landslide – the verdict
Back in April I posted extensively about a landslide that occurred in the town of Alesund in Norway. This slide occurred on 26th March, when a large block slipped into an apartment block, pushing it forward by up to seven metres and collapsing the lower floors. Five people were killed. This week, the outcome of the commission of inquiry has been released. The key points are as follows: Blasting of …
27 March 2008
UPDATE 3 (1st April 2008): Landslide in Alesund, Norway
Over the last thirty years or so there have been a series of nasty landslides under apartment blocks on the edge of cities. Examples that spring to mind include: 1972: Po Shan Road, Hong Kong – 67 fataltities1993: Highland Towers, Kuala Lumpur, Malaysia: 48 fatalties1997: Lincoln Mansions, Hsichih, Taiwan: 28 fataltites On 26th March 2008 there was an interesting landslide in the picturesque town of Alesund in Norway, once again …
Dave Petley is the Vice-Chancellor of the University of Hull in the United Kingdom. His blog provides commentary and analysis of landslide events occurring worldwide, including the landslides themselves, latest research, and conferences and meetings.
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