Mass Movement + Southern Leyte Case Study

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  • Created by: StevenFox
  • Created on: 23-03-16 15:10
Key info on Rockfall?
Dry Movement Very Fast Rock is hard Common on fracutred surfaces (due to weathering)
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Key info on Landslide?
Coherent mass Wet periods + steep slope Relatively dry Hard yet absorbent rock Undercutting increases risk
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Key info on Rotational Slump?
Slumped rock remains intact Fairly wet Relatively fast Does not travel far Softer & unconsolidated (mud & clays)
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Key Info on Mud/Debris Flow?
Very wet Water(weight) + gravity = Dense fluid Can trasnport boulders Soft unconsonsolidated rock (Mud & clay)
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Key info on Creep?
Incredibly slow Very gentle slope Wavy surface (Undulated) Damp soil + gravity
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When did the Southern Leyte Landslide occur?
17th February 2006, at 10:45
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How many people were in the immediate area of Mt.Cana-bag?
2,000
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Why had people only recently moved back to the area?
There had been an evacuation a week earlier, but was called off, as authorities thought landslide threat had passed
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Why was there an influx of people in the area on this particular day?
The 5th anniversary of the Guinsaigon Women's Health Association was being held at the time
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----cm of rain in ---- days
200cm of rain in 10 days (Casued by La Nina)
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What was the magnitude of the earthquakes prior to the landslide
2.6 on the Richter Scale
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What has also been blamed as a cause for the landslide?
Mining & Logging activites
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How many billion cubic metres of mud was carried by the landslide?
1.2 billion cubic metres
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How many people we killed and how many were displaced
1,126 killed and 19,000 displaced
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Which village was most affected?
Guinsaigon
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Name examples of buildings that Guinsaigon lost?
Healthcare centre, Elementry School, and Community Hall
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More than ---- people died in 2 minutes
More than 1000 people died in two minutes
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What % of families lost 5 or more family members
60%
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Roughly how many houses were buried by the flow?
Over 500
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How many communities hae been completely abandoned, and not maintained since the disaster?
6 communities
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How much was lost in agricultural production?
$46 million
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How much was lost in property damage?
$2.4 million
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How much was lost in infrastructural damage?
$22 million
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Why did people move to other communities and take up other lines of work, like construction?
Because the agricultural sector had been devastated in this community
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How far did the new slope of Mt.Cana-bag spread
It spread over 2km
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---- hectares of land covered in ---- to ---- metres of mud
45 hectares of land covered in 25 to 40 metres of mud
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Give examples of 4 nations which provided aid?
USA (Marines, Naval Vessels, $500k), China($1million), Taiwan(Month and a half worth of medicine) and New Zealand
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Who were orphaned children taken care of by?
Local mothers
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What did the President of the Philippines order naval vessels to do?
Act as a floating refuge for medical assistance etc.
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What were local community buildings filled with?
Survivors - for shelter
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What two 24hr services were established after the disaster?
24hr emergency radio and operations centre
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What was set up to help locals voice their concerns?
A municipal website
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What was done to communities in dangerous areas?
Relocated
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What work did experts do in the danger zones?
Hazard mapping - to establish the most prone areas
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Other cards in this set

Card 2

Front

Key info on Landslide?

Back

Coherent mass Wet periods + steep slope Relatively dry Hard yet absorbent rock Undercutting increases risk

Card 3

Front

Key info on Rotational Slump?

Back

Preview of the front of card 3

Card 4

Front

Key Info on Mud/Debris Flow?

Back

Preview of the front of card 4

Card 5

Front

Key info on Creep?

Back

Preview of the front of card 5
View more cards

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