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freshwater

A researcher stands above a large sinkhole, pouring green dye into draining water.
Posted inNews

Dyes and Isotopes Track Groundwater from Sink to Spring

by J. Besl 28 June 202124 August 2023

The hydraulic connection between a sinkhole and a natural spring—the longest and largest yet documented—could help reduce the guesswork in mapping karst aquifers.

“Welcome to Fabulous Las Vegas” sign against a backdrop of desert flora
Posted inFeatures

Is Green Las Vegas Gone Forever?

Mary Caperton Morton, Science Writer by Mary Caperton Morton 28 May 202129 September 2021

Living in Geologic Time: Will desertification overtake Nevada’s half-million-year history of wetlands?

Two plots comparing seasonal variability in mussel stable isotope values from the periostracum with measured suspended particulate organic matter, used to reconstruct the isotopic composition of suspended particulate organic matter.
Posted inEditors' Highlights

Tracking Excess Nitrogen with Freshwater Mussels

by Branwen Williams 30 April 20218 March 2023

Mussel shell periostracum and carbonate bound organic matter document seasonal variability in the isotopic composition of riverine suspended particulate organic matter.

Investigadora Monireh Faramarzi en una granja agricultora en Alberta, Canadá.
Posted inNews

Repensar el concepto de agua virtual en el mercado comercial mundial

by S. Dimitropoulos 20 April 202118 October 2021

Las discusiones sobre el comercio mundial están comenzando a considerar el agua que se necesita para producir bienes exportados. Algunos científicos sostienen que este enfoque debería tener una perspectiva regional más que global.

View from the water of lava tubes along the coast of Hawaiʻi near Hualalai volcano
Posted inScience Updates

Deep Submarine Fresh Water: A New Resource for Volcanic Islands?

by E. Attias, S. Constable, B. Taylor and D. Thomas 23 March 202129 September 2021

The discovery of large freshwater reservoirs off Hawaii suggests that other volcanic islands may have similar resources, which could help meet water demands amid population growth and climate change.

A wind turbine towers over an irrigated farm field with mountains in the distance
Posted inScience Updates

Solving Shared Problems at the Food, Energy, and Water Nexus

by J. Zhuang, F. Löffler, G. Sayler, G. Yu and G. Jiang 25 January 202113 March 2023

A 15-year-old partnership among Chinese and U.S. scientists studying challenges in our food, energy, and water systems has revealed that solutions are best achieved through international collaboration.

Landscape view showing mountains, forests, and other vegetation within the Héen Latinee Experimental Forest north of Juneau, Alaska
Posted inResearch Spotlights

Determining Dissolved Organic Carbon Flows into the Gulf of Alaska

by David Shultz 15 January 202122 December 2021

A new model determines freshwater and dissolved organic carbon discharge to the Gulf of Alaska from one of the most geographically diverse but understudied regions on the planet.

Researcher Monireh Faramarzi on an agricultural farm in Alberta, Canada
Posted inNews

Rethinking the Concept of Virtual Water in the Global Trade Market

by S. Dimitropoulos 17 December 202028 October 2021

Discussions around global trade are starting to consider the water it takes to produce exported goods. Some scientists argue that this approach should take a regional rather than global perspective.

A researcher climbs through dead mangrove trees on the island of Vieques in November 2019.
Posted inNews

Hurricane Maria Killed Mangroves Months After Storm

by T. Joosse 15 December 202010 February 2022

An overgrown channel between a lagoon and the ocean on the Puerto Rican island of Vieques created a backup of freshwater, disrupting the delicate balance of salinity in coastal mangrove forests.

Six plots showing spatial distribution of steady-state groundwater aquifer salinity (colors) and flow streamlines (white) for the two-dimensional simulations of the floodplain
Posted inEditors' Highlights

Evaporation Reverses Groundwater Flow and Forms Hyper-Salinity

by D. Scott Mackay 4 December 20201 December 2022

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.

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