Yellowstone 0.0 / 5 ? GeographyThe Restless EarthGCSEAQA Created by: JiyaCreated on: 05-04-16 15:38 Characteristics larger than normal volcanoes will change many characteristics of Earth eject at least 1,000km³ when they erupt compared to 1km³ from a normal volcano they have calderas has higher land around it erupt thousands of years apart Three eruptions in the past 3 million years last eruption 1,000x bigger than Mount St Helens in 1980 1 of 8 Yellowstone 80km long, 40km wide, 8km deep caldera is 55km long, 80km wide on a hotspot 2 of 8 Immediate Impacts large earthquake in Yellowstone region thick cloud of super heated gas and ash wil flow at a very high speed, killing everything it passes 10,000km³ of land will erupt 25 mile high cloud everything within a 100 mile radius of eruption will be destroyed ash will lower global temperatures by 20°C 2/3 of USA will be uninhabitable global economy placed under huge threat due to collapse of the USA 3 of 8 Long Term Impacts ash would block sun and lower lobal temperatures by 20°C mini ice age could occur global economy placed under threat due to collapse of USA ash will settle over 100's of km, burying fiels and buildings huge impact on transport, energy, electricity, agriculture and general production 1 in 3 people affected would die UK would receive ash cloud 5 days after eruption 4 of 8 Local Impacts everything within 100 mile radius will be destroyed large earthquake in Yellowstone region 25 mile high ash cloud 30+ cm of ash near eruption source and a fractio of a mm 2,000 miles away ash traces over most of USA, but only thick eough to collapse roofs in the states closest to Yellowstone 5 of 8 Global Impacts ash would block out sun and lower global temperatures by 20°C huge impact on transport, electricity and agriculture global economy placed under threat due to collapse of USA 40% of world in starvation would take 5 days to reach the UK 1,000 miles away, the layer of ash deposited on the ground up to 10ft thick 87,000 could be killed 6 of 8 Positive Impacts dramatic scenery created by volcanic eruptions attracts tourists income brought to area lava and ash deposited breaks down to provide valuable nutrients for the soil creates fertile soil for agriculture high level of heat and activity inside Earth close to volcano provides geothermal opportunities 7 of 8 Negative Impacts if ash and mud mix with rain water/ melting snow, mudflows are created called lahars 40% of the world will starve ash can: kill and sicken humans and animals reduce sunlight trigger rainfall causing lahars severely disrupt air, road and rail transport crush buildings (30cm of dry ash is enough to collapse a roof) contaminate water supplies kill crops and other vegetation clog machinery such as air filters 8 of 8
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