Development of an early warning sensor and network for brown-­‐out conditions.

Details

• Creators:
  Etyemezian, Vicken R. ; Nikolich, George ; Givens, Chris ; Sudderth, Alex
• Corporate Creators:
  University of Nevada System. Desert Research Institute
• Corporate Contributors:
  University of Nevada. Dept. of Civil & Environmental Engineering ; University of Nevada. University Transportation Center ; SOLARIS Consortium
• Subject/TRT Terms:
  • Sensors
  • Wind erosion
  • Visibility
  • Road weather information systems
  • Brown-outs
  • Early warning sensors
  • Dust storms
  • Sand storms
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nevada
• Corporate Publisher:
  SOLARIS Consortium
• Abstract:
  Brownout conditions on motorways are caused by windblown dust and sand from upwind areas where ; soils are susceptible to wind erosion. Owing in part to prolonged droughts that have dried ; soils and denuded vegetation and biological crusts, large, multi-­‐car pile-­‐ups have occurred ; in all three states within the SOLARIS (Nevada, Arizona, New Mexico) domain as well as in ; other states such as Oklahoma, Texas, and Colorado. ; At a critical wind condition, known as the threshold shear stress, sand grains can become ; entrained into the wind flow and can start to bounce along the surface, with each bounce ; resembling a ballistic impact that can release other sand grains. With each ballistic impact ; between sand grain and soil surface, small particles that are normally unable to become aerodynamically entrained on their own, are dislodged into the air flow.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30672/dot_30672_DS1.pdf
• File Type:
  [PDF - 3.43 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:b98613c410642a780dfc4aa2cc24b218c688112a1bb67fc8cf0ce55675e2b74f