Alaska pipeline - cold case
- Created by: SophieSunderland
- Created on: 02-04-15 18:02
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- North Alaska pipeline
- Challenges of the tundra
- low precipitation
- Very low temperatures
- Brief growing season
- poor thin soils
- Low biodiversity - fragile ecosystem
- in summer thawing of active layer
- Permafrost acting as impermeable layer
- Physical Challenges
- Below freezing temperatures
- Climate change- increases melt of permafrost- difficult to build/work on- subsidence problems (ground sinks down)
- Tectonic activity- high level of earthquakes
- Human Challenges
- Waste disposal decomposition slow
- Lack of daylight hours
- · Remoteness- extra infrastructure and transport needed to reach remote locations
- Fuel freezes in vehicles
- Solutions
- Elevation of houses and other small buildings on pile driven stilts
- All pipelines must be insulated and elevated on stilts.
- Larger unheated buildings and airstrips can be constructed safely on thick gravel pads
- Challenges of the tundra
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