The Bureau of Reclamation has released a report that identifies innovative approaches to improve drought resiliency within the Washita Basin in Oklahoma. It specifically looked at Foss and Fort Cobb Reservoirs. The study showed that a repeat of paleo droughts could have far greater impacts on reservoir yield than the observed drought of record. The study also quantified the risks of a reservoir not fulfilling its intended purposes under different drought scenarios.
Today, most of the water on Mars is locked away in frozen ice caps. But billions of years ago it flowed freely across the surface, forming rushing rivers that emptied into craters, forming lakes and seas. New research led by The University of Texas at Austin has found evidence that sometimes the lakes would take on so much water that they overflowed and burst from the sides of their basins, creating catastrophic floods that carved canyons very rapidly, perhaps in a matter of weeks.
Groundwater, which has been used to irrigate crops, satiate livestock and quench thirst in general for thousands of years, continues to be a vital resource around the world.
East Africa is one of the most vulnerable regions in the world to extreme weather and climate events. This new research improves ability to accurately assess the development and impact of climate change. An analysis of several sources in the region identified the most suitable sources of high-quality climate and hydrological data. The data can be used to identify hot spots and plan adaptation and mitigation measures at previously impossible finer spatial scale.
Slow-motion collisions of tectonic plates under the ocean drag about three times more water down into the deep Earth than previously estimated, according to a first-of-its-kind seismic study that spans the Mariana Trench.
Many people see the carbon cycle as vertical -- CO2 moving up and down between soil, plants and the atmosphere. However, new Michigan State University research published in the current issue of Geophysical Research Letters, adds a dimension to the vertical perspective by showing how water moves massive amounts of carbon laterally through ecosystems -- especially during floods. These findings -- which analyzed more than 1,000 watersheds, covering about 75 percent of the contiguous US -- have implications for climate change and water quality.
University of Maine researchers have reanalyzed global annual precipitation using quantile regression to reveal overlooked trends. Linear trends in US and global climate assessments reflect changes in mean annual precipitation, but these may not reflect changes across other quantiles in the precipitation probability distribution, including tails (very high and low precipitation levels), leading to systematic mischaracterization of climate risk. Applications in future climate studies could allow for risk assessment at more appropriate adaptation targets.
An international team of drought scientists show that while many dams and reservoirs are built, or expanded, to alleviate droughts and water shortages, they can paradoxically contribute to make them worse. The study is published in Nature Sustainability.
The threat today to African plants, fish, amphibians, reptiles, birds and large mammals is unprecedented, caused by a range of both human-induced and natural causes, leading scientists warned African ministers meeting on the eve of major global biodiversity talks. The ministers are determining Africa's joint position on the critical challenges of biodiversity loss for the 14th meeting of the Conference of the Parties of the UN Convention of Biological Diversity, Egypt, Nov. 14-29.
A study by scientist Dirk Scherler of the German Research Centre for Geosciences GFZ and two colleagues from Switzerland shows a possibility to detect the extent of debris on mountain glaciers globally and automatically via satellite monitoring. The scientists used the cloud computing platform Google Earth Engine for their study.