A new technique using dissolved noble gas tracers sheds light on how water moves through an aquifer, with implications for water resources and their vulnerability to climate change.
Groundwater/surface water interaction
Posted inEditors' Highlights
Thawing Permafrost May Cause Streams to Cool
Permafrost thawing associated with climate warming increases contributions to streamflow by deeper, cooler groundwater flow paths, which may result in lower summer stream temperatures.
Posted inEditors' Highlights
Evaporation Reverses Groundwater Flow and Forms Hyper-Salinity
A numerical model of groundwater-surface water systems shows how floodplain evaporation can reverse stream-groundwater flow and produce strong buoyancy changes associated with salinity.
Posted inResearch Spotlights
How Mesquite Trees Gain a Competitive Edge in Arid Arizona
A new study shows that mesquites employ hydraulic redistribution to move water between soil layers in the savannas of Santa Rita.
Posted inResearch Spotlights
A Closer Look at Turbulent Transport in Gravel Streambeds
Lab-built streams reveal new insights into turbulence-driven exchange of dissolved substances between stream water and sediments below.
Posted inEditors' Vox
On Integrating Sedimentology and Hydrogeology in Streambeds
A new modeling blueprint seeks to unify sedimentology, hydrology, and hydrogeology in the modeling of streambeds.
Posted inEditors' Vox
Above and Below: Understanding River-Groundwater Exchanges
Field data, new technologies, numerical modelling, and geostatistical methods can be combined to improve understanding of the interactions between surface water and groundwater.
Posted inResearch Spotlights
Why Are Arctic Rivers Rising in Winter?
Increased glacial melt is boosting winter streamflows by filling aquifers, a new study on an Alaskan river suggests.
Posted inResearch Spotlights
Changes in Groundwater Flow Affect Nitrogen Cycling in Streams
Overpumping and other activities that affect groundwater levels could combine with increased nitrogen runoff to amplify threats to human and environmental health.
Posted inResearch Spotlights
A New Level of Understanding for Coastal Aquifers
New models of saltwater-freshwater mixing in coastal aquifers show how salinity varies throughout the year, with implications for what happens to groundwater pollutants before they reach the ocean.