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Mt. St. Helens eruption effect - Coggle Diagram
Mt. St. Helens eruption effect
Positive
Environmental
Fertile soils enabled the ecosystem to repair quickly.
The flowing lava cools and forms hard rock that creates safe habitats for animals.
Social
It has raised awareness and boosted local tourism.
Make more people aware of the danger here, thus reduce the possibility of casualties.
Negative
Economical
Many entertainment venues, Bridges, roads and trails were destroyed or severely damaged. More than 185 miles of highways and roads and 15 miles of railways were destroyed or severely damaged.
Lateral blasting, debris flow and flood caused extensive damage to civil engineering.
Melting snow and ice from the mountains flooded the Tuttle River. About 12 million board feet of stored timber were washed into the river.
Environmental
Caused more debris avalanche, lateral blast, and mudflows.
Thousands of acres of virgin forest and the ecosystem have been destroyed.
Social
Dozens of people were injured and 57 people died, mostly from volcanic ash.
More than 200 homes and cabins were destroyed and many more were destroyed, leaving many people homeless.
Shipping was halted on the Columbia River and some boats were stranded. In eastern Washington, falling ash stranded 5,000 drivers.
Short term
Some people living near the volcano suffered from post-traumatic stress syndrome in the short term: depression, poor sleep, irritability, and a feeling of powerlessness.
Thousands of tons of ash poured out of the volcano, immediately inundated plants and animals.