Soil erosion is not only a geomorphological, but also a land degradation process that may
cause environmental damage affecting people's lives. This process is caused both by …

Core Ideas Understanding of preferential flow is improving, stimulated partly by new
technologies. Empirical process understanding has outstripped the capability of models to …

Preferential flow, a major influence in unsaturated soil and rock almost everywhere, occurs
by multiple phenomenologically distinct hydraulic processes. For the mode known as …

Details of Earth's shallow subsurface—a key component of the critical zone (CZ)—are
largely obscured because making direct observations with sufficient density to capture …

Hydrologic connectivity is the linkage of separate regions of a catchment via water flow.
Knowledge of hillslope–stream connectivity (both at the surface and in the subsurface) is …

Subsurface flow can be an important process in gully erosion through its impact on
decreasing soil cohesion and erosion resistance as soil water content or pressure increases …

Infiltration is the process of water entering into, and routings through, the subsurface. It has a
profound impact on water flux in the Earth's Critical Zone (CZ), influencing phenomena such …

Soil piping is a widespread, although often overlooked land degradation process. So far,
subsurface soil erosion studies have been focused on the importance of soil piping in …

Much debate has occurred in catchment hydrology regarding the connectivity of flow paths
from upslope areas to catchment outlets. This study was conducted in two catchments, one …

The semi-arid sagebrush steppe in the western United States faces pressures from the
agriculture industry, recreation use, invasive grasses, and a changing climate. A key to …