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Dune Stabilization and WIND-Blown dust

Cristina González-Maddux Institute for Tribal Environmental Professionals. Dune Stabilization and WIND-Blown dust. Dust storms in Northern AZ (NASA Earth Observatory, April 11, 2009). Regional dust storms.

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Dune Stabilization and WIND-Blown dust

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  1. Cristina González-Maddux Institute for Tribal Environmental Professionals Dune Stabilization and WIND-Blown dust

  2. Dust storms in Northern AZ (NASA Earth Observatory, April 11, 2009) Regional dust storms

  3. Increased dust may aggravate respiratory ailments (indoor and outdoor air quality concerns) Decreased visibility Damage to infrastructure Deposition of dust on snowpack – decreases snow albedo, speeds snowpack melt  positive feedback loop Consequences for human health and landscapes

  4. Slide courtesy of Margaret hiza, USGS

  5. Slide courtesy of Margaret hiza, USGS

  6. Partly-Fully active Dune region

  7. EEOP is cosponsoring dune stabilization projects along with the US Geological Survey • Techniques • Mud balls • Native plant seeds • “Sand sausages” • Wind erosion buffer Dune Stabilization

  8. USGS Research, Lead:Margaret Hiza USGS Assessment of sand dunes and the affects of climatic variation on dune mobility in Navajo land http://geomaps.wr.usgs.gov/navajo/pubs/Dunehandout.pdf Factors affecting sand dune mobility on the Navajo Nation, Arizona, U.S.A. http://www.csrl.ars.usda.gov/wewc/icarv/106.pdf

  9. Native seeds for revegetation • Sporobolus cryptandrus (sand dropseed) • Oryzopsis hymenoides (Indian ricegrass) • Hilaria jamesii (galleta viva)

  10. Passive dust monitoring – Diné college • Adapted from USGS methodology • Teflon coated pan • Hardware cloth • Marbles (reduces deflation) • 7 ft. tall T-posts • ----------------- • Dust flux measurement

  11. http://www4.nau.edu/eeop/dunes/index.asp EEOP’s Sand Dune Website

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