نتایج جستجو برای: wind erosion data

تعداد نتایج: 2499239  

Journal: :desert 2008
h. r. azimzadeh m. r. ekhtesasi h. gh. refahi h. rohipour m. gorji

wind erosion is a significant problem on 20 million ha of iran, especially in central plains and coastal areas. winderosion samplers, meteorological equipments and measurement procedure have been developed over the last twocenturies to measure the particles moving across the field in modes of creep, saltation and suspension. in recentresearch as the first technical measurement in iran, wind ero...

2002
Simon J. van Donk Edward L. Skidmore

Field data need to be collected to test wind erosion models under a broad range of climate, soil, and management conditions. The objective of this study was to test the USDAARS Wind Erosion Prediction System (WEPS) for a field with winter wheat plants in a modest amount of flat residue. A 600 m by 415 m field was selected near Burlington, CO, USA. Big Spring Number Eight (BSNE) samplers were us...

2018
Christian G. Sommer Michael Lehning Charles Fierz

Wind sometimes creates a hard, wind-packed layer at the surface of a snowpack. The formation of such wind crusts was observed during wind tunnel experiments with combined SnowMicroPen and Microsoft Kinect sensors. The former provides the hardness of new and wind-packed snow and the latter spatial snow depth data in the test section. Previous experiments had shown that saltation is necessary but...

2007
B. S. Sharratt

Wind erosion threatens soil productivity and air quality in the Columbia Plateau region of the Pacific Northwest United States. Management practices are sought that will abate erosion, but limitations exist in measuring the effectiveness of these practices in reducing erosion. Portable wind tunnels are ideal tools that can be used to assess the impact of management practices on erosion. A porta...

2002
John Leys Yaping Shao

John Leys, Centre for Natural Resources, Department of Land and Water Conservation, PO Box 462, Gunnedah, NSW, 2380 Australia; Grant McTainsh, Faculty of Environmental Sciences, Griffith University, Brisbane 4111, Australia; Yaping Shao, School of Mathematics, University of New South Wales, Kensington 2052, Australia. *Corresponding author: [email protected] ABSTRACT Wind erosion is a part ...

2015
Megan K. La Peyre Kayla Serra T. Andrew Joyner Austin Humphries Laura Robinson

Oyster reefs provide valuable ecosystem services that contribute to coastal resilience. Unfortunately, many reefs have been degraded or removed completely, and there are increased efforts to restore oysters in many coastal areas. In particular, much attention has recently been given to the restoration of shellfish reefs along eroding shorelines to reduce erosion. Such fringing reef approaches, ...

2014
Marjan Padidar Ahmad Jalalian Majid Abdouss Payam Najafi Naser Honarjoo Jaber Fallahzade

Wind erosion is a widespread phenomenon in arid region. The purpose of this study was assessed the capacity of nanoclay to control soil erosion in wind tunnel experiment. The nanoclay isolated from soils was dominant in montmorillonite. A sandy soil from the Khara desert, nearly 100 km East of Isfahan (Central Iran) was used. The soils of this area are structurally unstable and sandy texture ma...

2010
Jason P Field Jayne Belnap David D Breshears Jason C Neff Gregory S Okin Jeffrey J Whicker Thomas H Painter Sujith Ravi Richard L Reynolds

© The Ecological Society of America www.frontiersinecology.org F many scientists, the only dust they think about is the thin film of material that accumulates on their computer monitor on a regular basis. However, dust has enormous relevance to a wide range of ecological processes and environmental management challenges. Dust is fine particulate material that is removed from the land surface by...

2006
N. S. Copeland J. Q. Wu

Wind erosion is a widespread problem in much of the western United States due to arid conditions and persistent winds. Fugitive dust from eroding land poses a risk to both environmental quality and human health. Since the advent of the Clean Air Act in 1971, ambient air quality standards have been set regulating particulate matter in the atmosphere. Agricultural straw has been widely used for e...

Journal: :Journal of environmental quality 2009
N S Copeland B S Sharratt J Q Wu R B Foltz J H Dooley

Fugitive dust from eroding land poses risks to environmental quality and human health, and thus, is regulated nationally based on ambient air quality standards for particulate matter with mean aerodynamic diameter < or = 10 microm (PM10) established in the Clean Air Act. Agricultural straw has been widely used for rainfall-induced erosion control; however, its performance for wind erosion mitig...

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