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29 January 2014

The Keystone Canyon avalanche in Alaska, and its large ice-dammed lake

The Keystone Canyon avalanche, a very large snow and ice avalanche on the Richardson Highway in Alaska has blocked the road and impounded a lake

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30 October 2012

New paper: a historic landslide-induced tsunami in Lake Geneva

A new paper by Kremer et al. (2012) documents a landslide induced tsunami in Lake Geneva in AD563. The modelled wave was 8 km high when it inundated the city.

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27 May 2011

The Attabad landslide – tensions mount as the water level rises again

A review of the current state of play at Attabad as the lake level rises once again during the snowmelt season.

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11 September 2010

Pakistan floods – the extraordinary duration of the elevated water levels

The floods in Pakistan may have faded from the headlines in Europe, but unfortunately the impact continues, even though the rainfall events that caused them occurred more than a month ago.  The most dramatic illustration of this is a set of satellite images collected by NASA using the MODIS instrument. This is an image of the area around Sukkur taken on 7th July, before the rainfall event that initiated the …

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18 March 2009

38 years ago today – the Chungar landslide in Peru

Today is the 38th anniversary of a notable landslide – the Chungar rock avalanche in Peru. This landslide occurred on the banks of Lake Yanahuani (sometime spelt Lake Yanahuin), about 120 km north-east of Lima (see image below): The landslide, which had a volume of about 100,000 cubic metres, is shown on the image below. Unfortunately the Google Earth image resolution is low in this area, but you can see …

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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 …

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10 February 2009

Landslide on the Mahakali River on the Nepal / India border

Thanks to both David Hopkins and Ripendra for drawing my attention to a landslide on Friday on the Mahakali River on the border between Nepal and India. Although it has occurred in a remote area, it is interesting because the landslide appears to have partially blocked a fairly large river coming down from the high Himalayas. The landslide occurred in the Chautuldhar (Chetalkot) area of Rephalikot, close to Tawaghat in …

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25 January 2009

Two interesting recent landslides

Two interesting landslides to report in the last few days. 1. Landslide in Iztapalapa, Mexico CityOn Thursday morning a 50 cubic metre landslide in the Itzapalapa, a poor suburb of Mexico City slid onto a house at the toe of the slope, killing two people. Chinagate has published a rather dramatic picture of the site: The interesting thing about this image is the very large (apparently 5 m high) retaining …

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21 June 2008

Earthquake triggered landslide at Aratozawa Dam in Kurihara, Miyagi prefecture, Japan

Many thanks to reader Ripendra for alerting me to the following, and indeed for doing nearly all the work for this post. The 14th June 2008 earthquake in Japan is known to have triggered a number of landslides, as per earlier posts, but the most notable appears to have occurred at Aratozawa Dam in Miyagi prefecture. The Aratozawa Dam (Figure 1) is a rockfill dam used for flood control, irrigation …

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8 June 2008

[email protected] Tangjiashan images deepen the mystery

NB – I have now updated this with an image at the end that shows this more clearly. A quick image search today showed up the following Reuters image, entitled: “Water from the Tangjiashan “quake lake” flows down in quake-hit Mianyang, Sichuan Province June 7, 2008. Chinese troops on Saturday eased pressure on a swelling “quake lake” threatening hundreds of thousands of people, but a smaller lake burst its banks …

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