Volcanic ash, El Chichón

Categories
TERRESTRIAL AEROSOLS
Summary: AEROSOLS
Micron- cosmic analogs subcategories
Asteroids
Circumstellar shells
Comets
Terrestrial Aerosols Subcategories
Volcanic
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
Practical significance

interpretation of remote sensing data. Analogues of other planets' atmospheric dust, and dust in comets, asteroids, and circumstellar shells

Particle size Fraunhofer: reff (μm)
3.2
Particle size Fraunhofer: veff
5.4
Size distribution plot
Size distribution table
Particle shape

irregular

Refractive index

estimated to be in the range [1.5-1.6] + i0.001

Color
very similar to Pinatubo color
Scattering matrix (1) wavelength in nm
632.8
Scattering matrix (1) plot
Scattering matrix (1) table
Angle range (deg)
[5,173]
Paper (pdf)
Full reference paper

Muñoz O, Volten H, de Haan JF, Vassen W, Hovenier JW. Experimental determination of the phase function and degree of linear polarization of El Chichón and Pinatubo volcanic ashes. Journal of Geophysical Research, vol. 107, no. D13, 4174, 10.1029/2001JD000983, 2002