A review by Mathias Sprenger and others in 2016 described how preferential flowpaths alter the iotopic seasonality signature in soils. When these pathways exist (see my post on macropores), young, topsoil water is directly added to soil layers which have a different or dampened signature. This causes sharp deviations which stick out of the otherwise…

In last weeks #waterwednesday I briefly explained the reason behind the seasonality effect of stable water isotope composition. When water infiltrates into the soil, this signature is first preserved. However, as the water trickels further down, it mixes with preexisting water, slowly dampening the signature. This post is part of my water science communication series…