Formation of dust grains and dust emission processes
Document Type
Article
Publication Date
1-1-2024
Publication Title
Encyclopedia of Quaternary Science
Abstract
Dust plays a critical role in Earth's biogeochemical cycles and is studied in two primary categories: atmospheric dust and dust deposits, including loess. The production of dust-sized (silt and clay) grains and the processes that result in atmospheric dust emissions are important components of the dust cycle. Dust-sized particles are produced by chemical and physical weathering, comminution, and abrasion, a function of climate, geomorphic processes, and lithology of the source rocks. The potential for dust emissions, mostly involving saltating sand grains, is controlled by the threshold friction velocity, influenced by crusting, soil moisture, and surface roughness.
First Page
Vol3
Last Page
457
DOI
10.1016/B978-0-323-99931-1.00154-9
Recommended Citation
Sweeney, Mark R., "Formation of dust grains and dust emission processes" (2024). Faculty Publications. 66.
https://red.library.usd.edu/sustainability-fp/66