Mass-Wasting - PowerPoint PPT Presentation

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Mass-Wasting

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... March 27, 1964 Viaont, Italy, October 9, 1963 Yungay, Peru, May 31, 1970 Yungay, Peru, May 31, 1970 Lituya Bay, Alaska, July 9, 1958 Lituya Bay, ... – PowerPoint PPT presentation

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Title: Mass-Wasting


1
Mass-Wasting
  • Movement of Large Amounts of Material Downhill
    under Gravity

2
Soil Creep
3
Soil Creep, California
4
Colluvium, San Bernardino Mountains, California
5
Mystery or Soil Creep?
6
Four Years Mass-Wasting, Bosnia
7
Four Years Mass-Wasting, Bosnia
  • 10040/2 cm2 2000 cm2 (4 years)
  • 500 cm2 /year
  • Removed from 1 km slope per year 500 cm2
    /100,000 cm 1 cm/200 yr 5000 cm (50 m)/m.y.
    50m /m.y.
  • A 1-m (100 cm) soil mantle yields 500 cm2 /year,
    so movement 500 cm2 /year/100 cm 5 cm/year

8
Mudflows, California
9
Urban Planning, San Diego
10
Avalanche Chute, Colorado
11
Landslide, Mount Saint Helens
12
Sherman Glacier, Alaska, March 27, 1964
13
Viaont, Italy, October 9, 1963
1800 people died.
14
Yungay, Peru, May 31, 1970
15
Yungay, Peru, May 31, 1970
16
Lituya Bay, Alaska, July 9, 1958
17
Lituya Bay, Before and After
18
The Scour Line
19
The Highest Wave Ever Recorded
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