Characterization of soil structure dynamics by acoustic measurement: data analysis from worms and roots growths - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Master Thesis Year : 2019

Characterization of soil structure dynamics by acoustic measurement: data analysis from worms and roots growths

Abstract

We report observations of acoustic emissions (AE), registered in a cultivated and semi-controlled soil model (10 m²), as a non-invasive method for monitoring biophysical processes that modify soil structure. This was a first prospective study, as AE registration in soil was never conduct in such conditions before. AE were registered by a MISTRAS AE monitoring system using a AE sensor installed inside the soil and a background noise sensor outside the soil. AE events were recorded by the inside soil sensor and, after filtering the background noise, they can be divided into three clusters, using PCA and cluster analysis. We hypothesis that this three clusters depict different AE source, depending of their original production process. The results support the idea that AE monitoring could be used in a field context and may provide a window into large numbers of non-observable dynamics of soil bio-mechanical processes, which have crucial impacts on soil structure evolution.

Domains

Soil study
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Dates and versions

hal-03530209 , version 1 (17-01-2022)

Identifiers

  • HAL Id : hal-03530209 , version 1

Cite

Xiaoqing Wang. Characterization of soil structure dynamics by acoustic measurement: data analysis from worms and roots growths. Soil study. 2019. ⟨hal-03530209⟩
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