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. 2016 Sep 27;7:12833. doi: 10.1038/ncomms12833

Figure 5. Correlation between travel time and vertical gradient between 50 and 150 m depth for the simplified homogeneous system.

Figure 5

Particle travel time versus vertical hydraulic gradient for (a) homogeneous model and (b) heterogeneous realization. In a and b, colour represents distance of the particle location to Dhaka city centre. Correlation of particle travel time with (c) thickness of overlying fine sediments and (d) distance from Dhaka. The black line in each panel is a linear regression.