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The cover image is based on the Short Communication An analytical model for contaminant transport in landfill liner with fluctuating leachate head by Haijian Xie et al., https://doi.org/10.1002/nag.3478.
Leachate head in municipal solid waste (MSW) landfills can be very high (e.g., >10 m) in some Chinese landfills and can continuously change during the service life of the landfill. Variations of leachate head can induce time‐dependent seepage velocity changes in the liner, which may lead to a change of transport mechanisms of contaminants. An analytical model for contaminant transport through clay...