All articles tagged with #groundwater
NASA’s Curiosity rover images reveal web-like boxwork ridges on Mount Sharp in Gale Crater likely formed by ancient groundwater, offering new clues about Mars’ wetter past; drilling and mineral analyses show clay minerals and carbonates, helping scientists refine when liquid water could have persisted near the planet’s surface.
NASA’s Curiosity rover examined boxwork formations on Mount Sharp and found mineral nodules along ridge walls and hollows, formed by ancient groundwater as water flowed through rock cracks. The nodules, plus the height of the groundwater that cemented the ridges, suggest groundwater persisted longer than expected, potentially extending the window for past habitability and microbial life on Mars.
NASA’s Curiosity rover obtained close-up views of Martian boxwork ridges on Mount Sharp, suggesting ancient groundwater flowed through fractures and persisted higher up on the mountain than previously thought. Drill analyses found clay minerals in ridges and carbonates in hollows, with wet-chemistry targeting organic compounds; the findings support a longer-lived habitable window in Mars’ past as the rover continues to explore the sulfate-rich layer.
Curiosity’s close-up study of Mount Sharp reveals boxwork fractures and nodules formed by ancient groundwater, with clay minerals in ridges and carbonates in hollows; a sample was analyzed with wet chemistry to search for organic compounds, and the rover will move on to explore a sulfate-rich layer to better understand Mars’ changing climate and how long water persisted.
Satellite imagery shows Jubbah in Saudi Arabia's Nafud Desert using center-pivot irrigation over a subsurface aquifer, creating green circular fields in a basin that once hosted a much larger lake; the site preserves rich inscriptions and rock art dating back thousands of years and sheds light on ancient human migration and climate shifts.
A new 30-meter-resolution groundwater map estimates the contiguous United States contains about 306,500 cubic kilometers of groundwater (to 392 meters deep), roughly 13 times the volume of the Great Lakes, underscoring a vast underground freshwater reserve that is far less measured than surface water.
Researchers from Princeton and the University of Arizona created a high-resolution, AI-driven map of groundwater depth for the continental United States by combining over a million direct measurements with regional climate and geological data. The result estimates about 306,000 cubic kilometers of groundwater at a 30-meter grid (roughly 98 feet), revealing shallow supplies previously unknown and enabling more informed irrigation, conservation, and water infrastructure decisions. The model also quantifies uncertainty at each location and is designed for global expansion via the HydroFrame platform, signaling a shift toward data-driven, local-scale groundwater management.
Researchers built the most detailed continental US water table depth map to date (≈30 m) using a random-forest model trained on over a million observations, estimating total groundwater storage at about 306,500 km³ (uncertainty 291,850–316,720 km³). The high-resolution product captures local variability and shallow groundwater near streams and croplands, and shows that coarse-resolution datasets systematically underestimate accessible groundwater. The study emphasizes the importance of depth-aware estimates for drought planning, agriculture, and water security, and highlights the need for expanded groundwater observations and hybrid modeling. All data and code are publicly available.
The article discusses how the myth of 'aqua nullius'—the idea that water belongs to no one—perpetuates colonial injustices in Australia's groundwater management, ignoring Indigenous knowledge and rights. It emphasizes the importance of integrating Indigenous perspectives and traditional practices into water governance to ensure sustainable and culturally respectful management of groundwater resources, especially as climate change and industrial pressures increase.
The Willcox Basin in Arizona is experiencing rapid land sinking due to excessive groundwater pumping for agriculture, with some areas sinking up to six inches annually, causing fissures, dry wells, and flooding; efforts like declaring Active Management Areas aim to slow this process, but permanent subsidence remains a significant challenge.
A study finds that in temperate farmland, recent rainfall rapidly recharges aquifers through preferential flow pathways, while crops access much older water sources, challenging traditional models of water movement and impacting agricultural practices and groundwater management.
As the Great Salt Lake shrinks, scientists discover a subsurface aquifer that could provide a new freshwater source to help mitigate environmental issues like dust pollution, though further research is needed to understand its potential and sustainability.
As water levels in the Great Salt Lake drop, geologists have discovered mysterious underground 'oases' or reed-covered mounds that reveal insights into the lake's hidden freshwater sources, using advanced geophysical techniques to study their formation and potential environmental impacts.
The article explains how water, including meteoric water and groundwater, influences Kīlauea's eruptions, affecting explosivity, gas emissions, and eruption styles, with ongoing research monitoring water levels and composition to better understand volcanic activity.
A new study suggests living near golf courses, especially within one to three miles, may significantly increase the risk of developing Parkinson's disease, potentially due to pesticide exposure, though further research is needed to confirm this link.