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Related Experiment Video

Updated: Nov 19, 2025

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors

Published on: December 21, 2019

Estimation of surface soil moisture content using fractals.

Yen-Chang Chen¹, Hui-Chung Yeh², Meen-Wah Gui¹

¹Department of Civil Engineering, National Taipei University of Technology, Taipei, Taiwan.

Environmental Monitoring and Assessment

|January 27, 2021

Summary

Soil cracking patterns reveal surface soil moisture content. Lower moisture leads to larger fractal dimensions, enabling accurate estimation via remote sensing.

Keywords:

Box-counting dimension Fractals Moisture content of surface soil Remote sensing Soil cracking patterns

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Last Updated: Nov 19, 2025

Manufacturing Simple and Inexpensive Soil Surface Temperature and Gravimetric Water Content Sensors

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Published on: December 21, 2019

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In Situ Soil Moisture Sensors in Undisturbed Soils

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

Area of Science:

Hydrology
Soil Science
Remote Sensing

Background:

Soil moisture is crucial for the hydrologic cycle, impacting water resources and agriculture.
Soil cracking is a visual indicator of drought and is linked to moisture content.

Purpose of the Study:

To establish the relationship between fractal dimensions of soil cracking patterns and surface soil moisture content.
To develop a method for estimating soil moisture using fractal analysis of cracks.

Main Methods:

Prepared 16 soil samples and induced drying under varying temperatures.
Digitized photographs of soil cracks and developed an algorithm to calculate fractal dimensions.
Correlated fractal dimensions with soil moisture content.

Main Results:

Fractal dimensions of soil cracking patterns are highly correlated with surface soil moisture content.
A decrease in soil moisture content corresponds to an increase in fractal dimension.
Established surface soil moisture content-fractal dimension (DB-w) rating curves.

Conclusions:

Fractal analysis of soil cracking provides a reliable method for estimating surface soil moisture.
Remote sensing techniques, such as UAVs, combined with fractal analysis, can quickly and accurately estimate soil moisture once cracks form.