Yellowstone Flashcards
Location of Yellowstone
National Park in the Northern Rocky Mountain Range
Which states does Yellowstone cover?
Mostly Wyoming, crosses into Montana in the North and Idaho in the West
What are the warning signs of a supervolcano eruption? (6)
- Lots of small earthquakes
- Increase in ground temperature
- Increased frequency of geysers
- Ground rises
- Trees dying
- Wildlife (Byson) poisoned by toxic gases
How long has it been since the last Yellowstone eruption?
640,000 years
Local effects of Yellowstone(6)
- Tourism means high exposure
- Pyroclastic flow for 100 miles
- Pyroclastic flow travels at 100 mph
- Evacuation of 100 mile danger zone
- Local towns destroyed - Bozeman, Montana
- 90% of population could die (87,000)
How far will the pyroclastic flow reach from Yellowstone?
100 miles
How fast does the pyroclastic flow travel from Yellowstone?
100mph
How many people could die in the local area from Yellowstone?
87,000 people
National effects of Yellowstone (5)
- 400,000 people at risk in USA
- Ash falls 20 feet deep, roof collapse
- Masks would be needed for all of USA
- Animals die from breathing in ash
- Fluorine gas - crippling and then death
How many people are at risk in the USA from Yellowstone?
400,000 people
How deep will the ash fall from Yellowstone?
20 feet
Global effects of Yellowstone (3)
- Sulphur into stratosphere deflect the sunlight, a decrease of 15˚C in tropics
- Monsoon rains fail - two fifths of world population starves
- Halts air traffic for months - business and tourism suffer
What will be the temperature decrease in the tropics?
15˚C
What will be the temperature decrease in the tropics?
15˚C
How much of the world population will starve in the monsoon rains fail?
Two fifths
