Post on 24-Feb-2016
description
Spatial and temporal trends in landslide occurrence in South Asia
Dave PetleyInstitute of Hazard, Risk and Resilience
Durham University
http://blogs.agu.org/landslideblog/
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CRED data for landslide fatalities
2000 2001 2002 2003 2004 2005 2006 2007 2008 20090
1000
2000
3000
4000
5000
6000
7000
Year
Cum
ulat
ive
num
ber o
f fat
aliti
es
6587
Other disasters 2002-2009 (CRED database)Earthquake: 429,877 River flood: 37,860Storm: 166,410 Volcano: 221
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2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 20120
10000
20000
30000
40000
50000
60000
70000
80000
90000
Date
Cum
ulat
ive
num
ber o
f fat
aliti
es
Landslides from the Kashmir earthquake NB: Considerable uncertainty
Landslides from the Wenchuan earthquake
The human cost of landslides
81,833
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Global fatal rainfall-induced landslides – 2006 to 2009
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Non-seismic landslide fatalities
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 20120
5000
10000
15000
20000
25000
30000
35000
40000
Date (September)
Cum
ulat
ive
num
ber o
f fat
aliti
es
∂
Non-seismic landslide fatalities
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 20120
5000
10000
15000
20000
25000
30000
35000
40000
Date
Cum
ulat
ive
num
ber o
f fat
aliti
es
∂
∂
∂
Global fatal rainfall-induced landslides – 2006 to 2009
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Himalayan Arc
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Himalayan Arc – 2004 to 2009
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Monthly occurrence of non-seismic fatal landslides (NFLs)
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Annual cycle in pentads (five day bins)
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Trend in occurrence?
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More detailed investigation:landslide occurrence in Nepal
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Conclusions