Size distributions and mineralogy of ash particles in the stratosphere from eruptions of Mount St. Helens

Journal Article · Thu Jan 01 00:00:00 EST 1981 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.211.4484.832· OSTI ID:6918765

Farlow, N H; Oberbeck, V R; Snetsinger, K G; Ferry, G V; Polkowski, G; Hayes, D M

Samples from the stratosphere obtained by U-2 aircraft after the first three major eruptions of Mount St. Helens contained large globules of liquid acid and ash. Because of their large size, these globules had disappeared from the lower stratosphere by late June 1980, leaving behind only smaller acid droplets. Particle-size distributions and mineralogy of the stratospheric ash grains demonstrate inhomogeneity in the eruption clouds.

• OSTI ID: 6918765
• Journal Information: Science (Washington, D.C.); (United States), Vol. 211
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ASHES
MINERALOGY
ACID RAIN
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
ERUPTION
MT ST HELENS
PARTICLE SIZE
SAMPLING
STRATOSPHERE
SULFURIC ACID
ATMOSPHERIC PRECIPITATIONS
CASCADE MOUNTAINS
CHEMISTRY
EARTH ATMOSPHERE
FEDERAL REGION X
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MOUNTAINS
NORTH AMERICA
POLLUTION
RAIN
RESIDUES
SIZE
USA
WASHINGTON
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)