Landslide Fatalities
Dave Petley has recently published an online paper in Geology on "Global patterns of loss of life from landslides".
See here for cumulative frequency landslide fatality data over the past 10 years - with earthquake-induced fatalities and without.
Earthquake Secondary Hazards
Researchers at Durham University, UK, spearheaded by Alexander Densmore and Mark Allen, are investigating the cascading effect of earthquakes in a project "When the Shaking Stops". This is primarily looking at the effect of earthquakes on landslides and river basin changes, the secondary effects of large earthquakes.
Hurricane Vulnerability
A recent study by the University Corporation for Atmospheric Research, based in Boulder, Colorado, has found that people are more vulnerable to hurricanes further inland from the coast in the USA than previously thought. This is mostly due to people being less prepared to deal with hurricanes than those who live on the coast. A 2000 study found that this was "often as the result of intense rain, flooding, mudslides, and tornadoes" - which I would consider cascading hazards.
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