CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Soil Research   
Soil Research
Journal Banner
  Soil, Land Care & Environmental Research
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Board
Contacts
For Advertisers
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Sample Issue
For Authors
General Information
Notice to Authors
Submit Article
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter youtube

Now Online

Land Resources Surveys


 

Article << Previous     |     Next >>   Contents Vol 31(4)

Efficiencies of sediment samplers for wind erosion measurement

Y Shao, GH Mctainsh, JF Leys and MR Raupach

Australian Journal of Soil Research 31(4) 519 - 532
Published: 1993

Abstract

We investigate the efficiency of three sediment samplers used for studies of wind erosion: a vertically integrating trap (an active, modified Bagnold trap for measuring vertically integrated streamwise sediment fluxes, designed for use in a portable wind tunnel); and two single-point, passive traps, the Leach trap (a small sampler of simple design, mainly for use in wind tunnels) and the Fryrear trap (a rugged sampler for field use). The vertically integrating trap is calibrated using a 'weighed sediment supply' technique in which a weighed sediment source is blown away completely during a calibration run. The single-point traps are calibrated against an accurate isokinetic sampler. The collection efficiency of all three traps is determined both in bulk and as a function of particle size. The results for overall efficiency E (for aeolian sand-sized particles) are: for the vertically integrating trap, E = 1.02 ±.05; for the Leach trap, E = 0.85 ± 0.05 with a slight tendency to increase with wind speed; and for the Fryrear trap, E = 0.90 ± 0.05 (with or without a rain hood). Particle size analyses, carried out on the sediments collected by the traps under test and also the isokinetic sampler (assumed to have E = 1 for all particle sizes), show that the particle size distributions of the trapped sediments do not differ significantly from those of the isokinetic sampler. This uexpected result is a feature of the soils used for the tests, for which clay particles are mainly transported as small aggregates or clay skins upon sand grains. Keywords: Wind Erosion; Wind Erosion Samplers; Wind Tunnel; Soil Particle Size Analysis; Soil Nutrients;



Full text doi:10.1071/SR9930519

© CSIRO 1993

blank image
Subscriber Login
Username:
Password:  

 
PDF (612 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2015