Some statistical properties of aeolian saltation

Aeolian sediment transport is a process that commonly occurs on celestial bodies with atmospheric layers and solid surfaces. At present, it is very difficult to predict the instantaneous mass flux accurately. For the purpose of statistical prediction, the near-surface saltating grain count and the w...

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Main Author: Zhen-Ting Wang
Format: Article
Language:English
Published: AIP Publishing LLC 2024-02-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0192219
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author Zhen-Ting Wang
author_facet Zhen-Ting Wang
author_sort Zhen-Ting Wang
collection DOAJ
description Aeolian sediment transport is a process that commonly occurs on celestial bodies with atmospheric layers and solid surfaces. At present, it is very difficult to predict the instantaneous mass flux accurately. For the purpose of statistical prediction, the near-surface saltating grain count and the wind velocity above the saltation layer are synchronously measured in two dune fields. The duration and intensity of the saltation event obey exponential distribution, whereas sand transportation via saltation events with a smaller probability for a longer duration is significant. It is found for the first time that the Hilbert marginal energy spectrum of mass flux density follows the “−1” power law in a wide frequency range. In addition, the timescales of the energy-containing mass flux density mode and the strong wind–sand interaction of fluctuations are determined.
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spelling doaj.art-a777a571b33140ba9c7da57015fbc79c2024-03-04T21:29:34ZengAIP Publishing LLCAIP Advances2158-32262024-02-01142025342025342-910.1063/5.0192219Some statistical properties of aeolian saltationZhen-Ting WangAeolian sediment transport is a process that commonly occurs on celestial bodies with atmospheric layers and solid surfaces. At present, it is very difficult to predict the instantaneous mass flux accurately. For the purpose of statistical prediction, the near-surface saltating grain count and the wind velocity above the saltation layer are synchronously measured in two dune fields. The duration and intensity of the saltation event obey exponential distribution, whereas sand transportation via saltation events with a smaller probability for a longer duration is significant. It is found for the first time that the Hilbert marginal energy spectrum of mass flux density follows the “−1” power law in a wide frequency range. In addition, the timescales of the energy-containing mass flux density mode and the strong wind–sand interaction of fluctuations are determined.http://dx.doi.org/10.1063/5.0192219
spellingShingle Zhen-Ting Wang
Some statistical properties of aeolian saltation
AIP Advances
title Some statistical properties of aeolian saltation
title_full Some statistical properties of aeolian saltation
title_fullStr Some statistical properties of aeolian saltation
title_full_unstemmed Some statistical properties of aeolian saltation
title_short Some statistical properties of aeolian saltation
title_sort some statistical properties of aeolian saltation
url http://dx.doi.org/10.1063/5.0192219
work_keys_str_mv AT zhentingwang somestatisticalpropertiesofaeoliansaltation