Review the climate and relief of:
Cold and high-altitude environments (polar, glacial areas, periglacial areas, high mountains in non-tropical latitudes)
Hot, arid environments (hot deserts and semi-arid areas)
Make reference to:
- Precipitation: type and amount
- Temperature: annual range, diurnal range (difference between day and night)
CHALLENGES OF periglacial landscapes
Why would these characteristics of periglacial areas present problems for human habitation and resource development?
- Short growing season >
- Cold most of the year >
- Frozen ground >
- Low precipitation >
- Fewer sunshine hours >
- Remote location >
The periglacial environment is a cold climate, frequently marginal to the glacial environment, and is characteristically subject to intense cycles of freezing and thawing of superficial sediments. Permafrost commonly occurs within this periglacial environment. However, processes that involve the freezing, unfreezing, and movement of water are considered to be periglacial; processes associated with the presence of perennially frozen ground are permafrost. Permafrost is therefore closely associated with the periglacial environment, and usually permafrost processes take place within a periglacial environment
- Describe the distribution of permafrost
challenges of permafrost for human habitation
- Read article, view gallery then watch selected parts of the video.
- Make notes on how periglacial environments create challenges for human habitation and resource development.
Article > Images > Video
Gallery of images. Click to advance.
challenges of permafrost for resource development
CASE STUDY: THE TRANS ALASKA PIPELINE
How was the Trans Alaska Pipeline built to work in periglacial environments?