Chaiten 2008 ash

Ashfalls resemble blankets, covering existing topography with layers that generally thin with distance from the vent.  From an atmospheric and aircraft hazard perspective, it is important to know how much fine (diameter <60 microns) and very fine ash (< 30 microns) is erupted.

Volumes and total grain size distributions

Volume determination SS

Readings on remote sensing of ash:

Ash detection methods, Wen & Rose, 1994

Patterns of volcanic cloud evolution  Rose et al 2001

Ash retreivals,  Schneider et al, 1999

successive examples  Guo et al 2004

Tracking Volcanic Clouds  Carn et al 2008

Remote sensing studies have shown that ash, even fine and very fine ash gets removed in a day or two, even from stratospheric volcanic clouds.

More Information about Super-eruptions:

Secondary Issues:

   Geological Record of Supereruptions

    Large Igneous Provinces

    Calderas and Silicic Complexes

    Transport to Troposphere and Stratosphere

    Sulfur and Supereruptions

    Volcanic ash in Super Eruptions

    Scaling Up Eruptions

    Global Environmental Effects

    Forecasting a Super Eruption

Reference Page

created by

Bill Rose