Saltation activity and its threshold velocity in the Gurbantunggut Desert, China

Xinghua Yang, Qing He, Xinchun Liu, Fan Yang, Wen Huo, Shuanghe Shen and Ali Mamtimin ()
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Xinghua Yang: China Meteorological Administration
Qing He: China Meteorological Administration
Xinchun Liu: China Meteorological Administration
Fan Yang: China Meteorological Administration
Wen Huo: China Meteorological Administration
Shuanghe Shen: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster
Ali Mamtimin: China Meteorological Administration

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2018, vol. 90, issue 1, No 17, 349-364

Abstract: Abstract A field experiment was conducted from 2 May 2010 to 1 May 2012 in the Gurbantunggut Desert, the second largest desert in China, to investigate saltation activity and its threshold velocity, and their relations with atmospheric and soil conditions. The results showed that saltation activity occurred more frequently during 08:00–20:00 Local Standard Time in spring and summer, with air temperatures between 20.0 and 29.0 °C, water vapor pressures between 0.6 and 0.9 kPa, soil temperatures between 25.0 and 30.0 °C, and a soil moisture lower than 0.04 m3/m3. At 2 m height, the saltation threshold velocity varied between 11.1 and 13.9 m/s, with a mean of 12.5 m/s. Threshold velocity showed clear seasonal variations in the following sequence: spring (11.7 m/s)

Keywords: Saltation activity; Threshold velocity; Horizontal dust flux; Atmospheric condition; Soil condition (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s11069-017-3047-4

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