Graph showing mean diamater of ash particles with increasing distan...

Graph showing mean diamater of ash particles with increasing distan...

Detailed Description

Graph showing mean diamater of ash particles with increasing distance from Mount St. Helens volcano. Typical of ash-fall deposits, the mean particle size of ash decreased rapidly downwind from Mount St. Helens (Sarna-Wojcicki and others, 1981) for the eruption on May 18, 1980.

Details

Image Dimensions: 351 x 297

Source:


Sarna-Wojcicki et al, 1981