Volcanic ash, El Chichón
Practical significance
Interpretation of remote sensing data. Analogues of other planets' atmospheric dust, and dust in comets, asteroids, and circumstellar shells.
Origin
El Chichon volcano in Mexico. The particles were collected at a few kilometers from the vent within 24 hours after an eruption in 1982.
Main constituent
Volcanic silicate ash.
Color
Very similar to Pinatubo color
Particle size Fraunhofer: reff (μm)
3.2
Particle size Fraunhofer: veff
5.4
Size distribution plot:
Size distribution table
Particle shape
Irregular
Scattering matrix (1) wavelength in nm
632.80 nm
Scattering matrix (1) table
Scattering matrix (1) plot:
Refractive index
Estimated to be in the range [1.5-1.6] + i0.001.
Angle range (deg)
[5,173]
Reference/s