Watershed and Stream Network Delineation on Alaska’s North Slope
description
Transcript of Watershed and Stream Network Delineation on Alaska’s North Slope
Watershed and Stream Network Delineation on Alaska’s North Slope
Arctic Climate Change
• IPCC AR4 Projections (2007)– Increased temperature• Winter larger• Summer smaller
– Increased precipitation• Winter larger• Summer smaller
• Changes in Arctic Hydrology
Climate Change
Climate Change
Arctic Streams
5/21/2009
Arctic Streams
6/18/2009
Arctic Streams
• High amounts of organic matter– Carbon and Nitrogen
• Sites of Biogeochemical transformations– Organic matter conduits– System loss pathways
• How will they be affected ???
Study Area
Study Area
Study Area
• Sampling Sites– 3 Mountain– 3 Tundra
•Watershed area ?
Methods
Study Area
• Sampling Sites– 3 Mountain– 3 Tundra
•Watershed area ?
Watershed AreasSite Area (km²)
Trevor Creek 42.5Rochee Mountanee 83.9Atigun 609.2Kuparuk 138.0Oks Creek 77.1Imnavait 1.6
Further Work…
• land cover type ?
• drainage density ?
Questions ???