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16 November 2010
A round up of interesting natural hazards stories – Taiwan landslides, the Pakistan floods, the Attabad landslide, and risk management in Canada
Occasionally I post a round up of stories on natural hazards, mostly on landslides, that have caught my eye in the last few days. Here is the latest set: 1. Taiwan landslide hazard management Taiwan is one of the most landslide prone places on Earth as a result of its climate and geological setting. In the last 18 months it has suffered three high profile slope accidents – the extraordinary …
3 November 2010
Updates – the Canterbury earthquake railway line; Hurricane Tomas and Haiti; and Manchhar lake in Pakistan
This is a general update email on a range of recent posts: 1. The railway line affected by the Canterbury Earthquake in New Zealand Yesterday I posted the image to the left of the deformation to a railway line were it crossed the surface expression of the fault that was responsible for the Canterbury Earthquake in New Zealand. A number of people contributed to the discussion (thanks to you all) …
17 October 2010
Updated: Attabad – NDMA make a full set of reports available online, plus an article in the Economist
The National Disaster Management Agency (NDMA) in Pakistan have now made four reports about Attabad available online here. These are as follows (with the correct links to each): The dam break study undertaken by NESPAK. A report by Alessandro Palmeiri, from the World Bank My report on the landslide. A report by the Geological Survey of Pakistan dating from before the landslide event about the hazards at the site. Interestingly, …
24 September 2010
Remarkable NASA imagery of catastrophic flooding around Manchhar Lake in Pakistan
NASA have provided the most dramatic evidence yet of the catastrophic floods that are occurring around Manchhar (Manchar) Lake in Pakistan (see my post yesterday on this issue). This image was captured by the ALI instrument on 18th September: Compare this with an image taken of the same area just three days earlier: Or the Google Earth image of the same area, which was collected in May this year: Geo-TV, …
21 September 2010
Gifts and Perils of Landslides
Ken Hewitt has written a wonderful article for Scientific American entitled “Gifts and Perils of Landslides”, in which he examines the inter-relationship between the development of society and the occurrence of landslides in the Upper Indus valleys. Ken is the guru of high mountain landslides in Pakistan, having spent many field seasons mapping rock avalanche deposits in the remote upper valleys of the Hindu Kush. The article is available online …
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 …
9 September 2010
IAEG presentation and paper on Attabad
Today I presented an invited paper at the 11th Congress of the IAEG in Auckland, New Zealand on the topic of landslide hazards along the Himalayan Arc. This paper starts by looking at global and regional landslide hazard before presenting the state of play at Attabad. As usual, I have uploaded the PowerPoint file to Authorstream, such that you should be able to both view and download it below: 10_09 …
1 September 2010
The latest NASA image of Attabad
NASA have released another spectacular satellite image of the Attabad dam and lake. In the article they focus on the upstream end of the lake: The article states that the water level can be seen to have dropped as the area upstream of Hussaini is no longer inundated. Now there is some evidence that the water level has dropped a little – the Pamir Times reports 12 feet (4 metres), …
31 August 2010
Catching up – recent landslide events
The next few posts will be an attempt to catch up on the things that I missed whilst on vacation in Switzerland last week. Thanks to the many people who have tipped me off about landslide events. I will cover Pakistan in another post.1. A large flow in AustriaThanks to Martin Springer for highlighting this one. On Saturday 21st August a severe storm triggered a 100,000 cubic metre flow in …
25 August 2010
Hunza debris flow video
You probably guessed that I am on holiday this week (normal service will be resumed at the weekend), but I thought I’d quickly post this new debris flow video from Hunza in Pakistan. The interesting but starts at about 1 minute 15 seconds:
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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