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You are browsing the archive for Landslides Mudslides.

13 January 2010

The Haiti earthquake – likely shaking damage to structures

Over the last few years a number of studies have examined the level of damage associated with the intensity of shaking in earthquakes. The table below shows the relationship between shaking intensity (MMI) across the top and different types of building down the side. The number is the percentage of buildings damaged or collapsed: Click on the table for a better view in a new window. This is then helpful …

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Initial reports of landslides induced by the Haiti earthquake

It is inevitable that the Haiti earthquake will have triggered landslides, especially in the mountains and in the slum areas built onto the hillsides around the large cities. At present it is not possible to quantify how large these impacts will have been, but some reports are starting to emerge: The BBC live coverage has this report:Emmet Murphy, Jacmel, Haiti, emails:I was driving through the mountains when the car started …

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Haiti – some thoughts on disaster reporting by the media

Watching the reports of the earthquake disaster in Haiti coming in, I thought it might be useful to share some observations on the reporting of the immediate aftermath of disasters in less developed countries:1. Everything stops at night. At the time of writing it is still night time on Haiti. In the aftermath of an earthquake electricity and power supplies are wiped out, so for the night time period it …

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The likely impacts of the Haiti earthquake

The earthquake in Haiti is likely to have caused very high levels of damage and many fatalities. The USGS is currently reporting the earthquake as magnitude 7.0 at a shallow depth (only 10 km), which will have led to high ground accelerations for a large area of the country:The USGS PAGER analysis, which examines the vulnerability of the population is the affected area places three large communities (Petit Goave, population …

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23 February 2009

A few items of interest

You may have noticed that the number of posts on this blog has dipped of late. My apologies for this – we learnt just before Christmas that my seven year old son Adam needed open heart surgery, which was undertaken earlier this month. I am glad to say that it was a complete success and he has today returned to school, so normal service will hopefully be returned. So, I …

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5 September 2008

Hurricane landslides in Haiti

A perennial landslide story at this time of year is the triggering by a tropical cyclone of landslides in Haiti. This year the hurricane season has been particularly cruel, with three large events in a month. Hanna, the most recent, appears to have stalled close to Haiti for a day or so, causing torrential rainfall. At the moment reports suggest that 136 people have been killed in flash floods and …

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