Mount St. Helens: the aftermath
During the May 18, 1980 eruption of Mount St. Helens, ash fell over a 100,000 sq mile area to the east. The Idaho studies showed that, although the ashfall altered the food chains of some forest streams, within a year they fully recovered. The effects of ashfall on lake benthic organisms are still being assessed by sediment sampling. The Montana studies reported on snow avalanche models adapted to mudflows, trophic impact of ash deposits on Montana lakes, and the volcanic ash as nutrient subsidy to sub-alpine lakes. The Oregon studies reported herring and smelt egg and larvae damage due to suspended ash. The drainage patterns in eruption debris were studied along with the filling of Columbia River berths with ash.
- Research Organization:
- Office of Water Research and Technology, Washington, DC (USA)
- OSTI ID:
- 6334381
- Report Number(s):
- PB-87-183240/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preliminary report on physical, chemical and mineralogical composition and health implications of ash from the Mount St. Helens eruption of May 18, 1980
Recovery of lakes in the 1980 blast zone of Mount St. Helens
Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
ASHES
AIR POLLUTION
WATER POLLUTION
MT ST HELENS
VOLCANOES
ENVIRONMENTAL IMPACTS
FISHES
FOOD CHAINS
GROUND WATER
LAKES
MONTANA
OREGON
SEDIMENTS
ANIMALS
AQUATIC ORGANISMS
CASCADE MOUNTAINS
FEDERAL REGION VIII
FEDERAL REGION X
HYDROGEN COMPOUNDS
MOUNTAINS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
RESIDUES
SURFACE WATERS
USA
VERTEBRATES
WASHINGTON
WATER
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
290300 - Energy Planning & Policy- Environment
Health
& Safety