Elasticity

To quote Yushiou Tsai (2016) : "We used elasticity to assess the sensitivity of mean and drought flows to changes in climate, land use and land cover (LULC), and water use across a broad region. ... Sankarasubramanian et al. (2001) suggested (that) a bivariate empirical estimator for the precipitation elasticity of mean flow". This is this last estimator that is use in the below function.

Usage

compute_elasticity(Q, X)

Arguments

Q

discharge

X

variable

Value

Elasticity given by : eps_X = median((Q-Qmean)/(X-Xmean) * Xmean/Qmean)