However, subsurface desiccation cracks especially less opened cracks can be easily overlooked during visual surveying due to dense surface vegetation, causing an underestimation of their potential hazards on the integrity of an earth structure (Jones et al., 2014). Field-scale inspection of soil cracking commonly resort to visual observations on soil surface that would require surveyors to walk along the entire earth structures such as embankment and slope for crack observation and measurement (Kleppe and Olsom, 1985 Dasog and Shashidhara, 1993 Morris et al., 2007), destructive techniques such as the excavation of trenches (Cooling and Marsland, 1954 Dyer et al., 2009), and nondestructive geophysical surveys such as Ground Penetration Radar (GPR) (Benson, 1995 Hinkel et al., 2001 Levatti et al., 2017) and Electrical Resistivity Tomography (ERT) (Sentenac and Zielinski, 2009 Jones et al., 2012 Chambers et al., 2012 Jones et al., 2014 Gunn et al., 2015).
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