Effects of soil moisture and dried raindroplet crust on saltation and dust emission
File version
Author(s)
Mikami, M
Leys, J
Yamada, Y
Heidenreich, S
Shao, Y
McTainsh, GH
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
Size
1688836 bytes
File type(s)
application/pdf
Location
License
Abstract
Field experiments using a sand particle counter and an optical particle counter clarified the links between saltation and dust emission under wet and weakly crusted conditions in a fallow field previously cultivated with wheat in Australia. A crust was formed by the impact of raindroplets after small precipitation events. A little soil moisture enhanced the strengths of crust and aggregation even though the soil was dried. Dust concentration was proportional to friction wind velocity, but the proportionality was dependent on ground surface conditions, such as the minimally dispersed particle size distribution of parent soil and the presence or absence of crust.
Journal Title
Journal of Geophysical Research: Atmospheres
Conference Title
Book Title
Edition
Volume
113
Issue
D24212
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
© 2008 American Geophysical Union. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Item Access Status
Note
Access the data
Related item(s)
Subject
Atmospheric sciences
Sedimentology
Physical geography and environmental geoscience