“…Besides, a parameter corresponding to the concept of λ d is the fillable porosity ( λ f ), which can be defined as the amount of water taken into a soil column extending from the ground surface to water table, per unit surface area of per unit rise in the water table (Acharya et al.,
2012; Sophocleous,
1991), and can be estimated as (Acharya et al.,
2012):
where λ f is the fillable porosity, and ∆ d s is the change in total storage deficit of the aquifer resulting from ∆ h water table rise. The parameters λ d and λ f play a vital role in approaches of investigating the water table dynamics, such as subsurface modeling (Acharya et al.,
2012; Hilberts et al.,
2005; Wang, 2009; Xiao, Xu, Ren, et al.,
2021) and estimation of groundwater consumption by plants (Acharya et al.,
2014; Jiang et al.,
2017; Loheide et al.,
2005; McLaughlin & Cohen,
2014). Under hydrostatic assumption, the λ d and λ f values are considered to be equal for a given water table depth (WTD) in previous research (e.g., Crosbie et al.,
2005).…”