Transport of Cryptosporidium parvum through macroporous soils is poorly understood yet critical for assessing the risk of groundwater contamination. We developed a conceptual model of the physics of flow and transport in packed, tilted, and vegetated soilboxes during and immediately after a simulated rainfall event and applied it to 54 experiments implemented with different soils, slopes, and r...

Electrical resistivity tomography data were acquired in proximity to the coal combustion residual landfill an effort image and analyze seepage pathways through shallow soil underlying karsted limestone bedrock. The water table is at a depth of more than 45 m. most prominent subsurface identified on electrical are located immediately adjacent toe attributed stormwater run-off. moisture content a...

Nonpoint source contamination of surface and groundwater resources with nitrate-N (NO3-N) has been linked to agriculture across the midwestern USA. A 4-yr study was conducted to assess the extent of NO3-N leaching in a central Iowa field. Water flow rate was monitored continuously and data were stored on an internal datalogger. Water samples for chemical analysis were collected weekly provided ...

The critical zone (CZ) represents the most-shallow subsurface, where bio-, hydro-, and geospheres interact with anthropogenic activity. To characterize thickness lateral variations of CZ, here we focus on Eastern Betic Shear Zone (EBSZ), one most tectonically active regions in Iberian Peninsula. Within EBSZ, Guadalentín Depression is a highly populated area intensive agricultural activity, char...