Sensitivity of aeolian modelling to soil particle size data
Poster
Paper/Presentation Title | Sensitivity of aeolian modelling to soil particle size data |
---|---|
Presentation Type | Poster |
Authors | Shao, Yaping (Author), Klose, Martina (Author), McTainsh, Grant (Author), Strong, Craig (Author) and Butler, Harry (Author) |
Editors | Dong, Zhibao |
Journal or Proceedings Title | Proceedings of the 8th International Conference on Aeolian Research (ICAR 2014) |
Number of Pages | 1 |
Year | 2014 |
Place of Publication | Lubbock, TX. United States |
Web Address (URL) of Paper | http://www.2014icar8.com |
Conference/Event | 8th International Conference on Aeolian Research (ICAR 2014) |
International Conference on Aeolian Research | |
Event Details | 8th International Conference on Aeolian Research (ICAR 2014) Event Date 21 to end of 25 Jul 2014 Event Location Lanzhou, China |
Event Details | International Conference on Aeolian Research |
Abstract | The simulation of size-dependent sand transport and dust emission requires particle size distributions (PSDs) of parent soil as input data. However, soil PSDs are difficult to measure and different sample pre-treatment and measurement techniques can give different results which may significantly affect the model estimates of sand/dust fluxes. In large-scale (regional to global) dust models (e.g. GCMs), soils are usually classified according to their hydraulic properties and this classification is not necessarily consistent with soil classifications based on PSD. Over the Australian continent, 29 soil samples have been collected and their PSDs analyzed at high resolution (256 size classes) by Coulter Multisizer.It is found that samples for a given USDA soil texture class (e.g. loam), can have profoundly different PSDs. This suggests that a new soil type classification dedicated for wind-erosion modeling is needed; which reflects the natural particle and aggregate size condition of soils. In this study, we use a wind erosion model to test how uncertainties in PSDs affect the model performance. The range of uncertainties in sand and dust fluxes arising from particle-size uncertainties is quantified. |
Keywords | particle size; dust; airborne soil; modeling |
ANZSRC Field of Research 2020 | 410605. Soil physics |
370999. Physical geography and environmental geoscience not elsewhere classified | |
370901. Geomorphology and earth surface processes | |
Public Notes | © 2014 International Society of Aeolian Research. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. Poster no.54 |
Byline Affiliations | University of Cologne, Germany |
Griffith University | |
Australian National University | |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q28xy/sensitivity-of-aeolian-modelling-to-soil-particle-size-data
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