Fig. 4From: Identification of hydrogeological evolution using hydrogeology-seismology analysis of groundwater head fluctuation related to the 1999 MW = 7.5 Chi-Chi earthquake(a) Study area. (b) Schematic diagram of Chou-Shui River alluvial fan groundwater strata and evolution comparison of pre-seismic and post-seismic groundwater head in aquifers 1 (f-1), 2 (f-2), and 3 (f-3)Back to article page