Hydraulic Tomography for Estimating the Diffusivity of Heterogeneous Aquifers Based on Groundwater Response to Tidal Fluctuation in an Artificial Island in Taiwan

Figure 7

Spatial distributions of the groundwater level affected by tidal fluctuation. (a) Tidal efficiency (TE) results based on the continuous wavelet transform (CWT) approach between the groundwater and tidal levels; (b) wavelet coherence (WC) results based on the wavelet coherence approach between the groundwater and tidal levels; (c) first maximum cross-correlation results between the groundwater and tidal levels; and (d) time lag results between the groundwater and tidal levels.

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(b)

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