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Spatial Patterns of Groundwater Biogeochemical Reactivity in an Intertidal Beach Aquifer

Abstract.

"Beach aquifers host a dynamic and reactive mixing zone between fresh and saline groundwater of contrasting origin and composition. Seawater, driven up the beachface by waves and tides, infiltrates into the aquifer and meets the seaward-discharging fresh groundwater, creating and maintaining a reactive intertidal circulation cell. Within the cell, land-derived nutrients delivered by fresh groundwater are transformed or attenuated. We investigated this process by collecting porewater samples from multi-level wells along a shore-perpendicular transect on a beach near Cape Henlopen, Delaware and analyzing solute and particulate concentrations. [...]"

Source: Biogeosciences
Authors: Kyra H. Kim
DOI: 10.1002/2017JG003943

Read the full article here.


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