Chemical changes of lakes within the Mount St. Helens blast zone

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.216.4542.175· OSTI ID:5478743

Wissmar, R C; Devol, A H; Nevissi, A E; Sedell, J R

Differences in the dissolved chemistry of lakes devastated by the 18 May 1980 eruption of Mount St. Helens are attributable to location relative to the lateral blast trajectory of the eruption and to the emplacement of mineral deposits. Elemental enrichment ratios of pre- and posteruption measurements for Spirit Lake and comparisons of the chemical concentrations and elemental ratios for lakes inside and outside the blast zone reflect the influences of the dissolution of magmatic and lithic deposits. The pH changes were minor because of buffering by carbonic acid and reactions involving mineral alteration, dissolved organics, and biological processes.

• OSTI ID: 5478743
• Journal Information: Science (Washington, D.C.); (United States), Vol. 216
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
LAKES
ACIDIFICATION
VOLCANOES
ENVIRONMENTAL EFFECTS
ERUPTION
MT ST HELENS
PH VALUE
PLUMES
TRAJECTORIES
WATER CHEMISTRY
CASCADE MOUNTAINS
CHEMISTRY
FEDERAL REGION X
MOUNTAINS
NORTH AMERICA
SURFACE WATERS
USA
WASHINGTON
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)