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Public Release: 16-May-2013
LLNL scientist finds topography of Eastern Seaboard muddles ancient sea level changes The distortion of the ancient shoreline and flooding surface of the US Atlantic Coastal Plain are the direct result of fluctuations in topography in the region and could have implications on understanding long-term climate change, according to a new study. Contact: Anne Stark Public Release: 16-May-2013
World's biggest ice sheets likely more stable than previously believed A new study suggests that the previous connections scientists made between ancient shoreline height and ice volumes are erroneous and that perhaps our ice sheets were more stable in the past than we originally thought. The study found that the Earth's hot mantle pushed up segments of ancient shorelines over millions of years, making them appear higher now than they originally were millions of years ago. Contact: Margaret Mroziewicz Public Release: 16-May-2013
Sea level: One-third of its rise comes from melting mountain glaciers About 99 percent of the world's land ice is stored in the huge ice sheets of Antarctica and Greenland, while only 1 percent is contained in glaciers. However, the meltwater of glaciers contributed almost as much to the rise in sea level in the period 2003 to 2009 as the two ice sheets: about one third. This is one of the results of an international study with the involvement of geographers from the University of Zurich. Contact: Tobias Bolch Public Release: 16-May-2013
World's melting glaciers making large contribution to sea rise While 99 percent of Earth's land ice is locked up in the Greenland and Antarctic ice sheets, the remaining ice in the world's glaciers contributed just as much to sea rise as the two ice sheets combined from 2003 to 2009, says a new study led by Clark University and involving the University Colorado Boulder. Contact: Tad Pfeffer Public Release: 15-May-2013
Groundwater unaffected by shale gas production in Arkansas A new study by scientists at Duke University and the U.S. Geological Survey finds no evidence of groundwater contamination from shale gas production in Arkansas. Contact: Tim Lucas Public Release: 15-May-2013
Billion-year-old water could hold clues to life on Earth and Mars A UK-Canadian team of scientists has discovered ancient pockets of water, which have been isolated deep underground for billions of years and contain abundant chemicals known to support life. Contact: Aeron Haworth Public Release: 13-May-2013
Energy supply from hydropower projects depends on rainforest conservation Research published in the Proceedings of the National Academy of Sciences shows that conserving rainforests in the Amazon River Basin will increase the amount of electricity that hydropower projects in the area can produce. The findings also reveal that if deforestation continues to increase in the Amazon, energy projections for one of the world's largest dams, the Belo Monte in Brazil, decline by one third. Contact: Ashley Simons Public Release: 9-May-2013
Loss of eastern hemlock will affect forest water use The loss of eastern hemlock from forests in the Southern Appalachian region of the United States could permanently change the area's hydrologic cycle, reports a new study by US Forest Service scientists at the Coweeta Hydrologic Laboratory located in Otto, North Carolina, published online in the journal Ecological Applications. Contact: Steven Brantley Public Release: 9-May-2013
Water on moon, Earth have a common source New research finds that water inside the moon's mantle comes from the same source as water on Earth. The Moon is thought to have formed after a giant impact to a still-forming Earth 4.5 million years ago. These new findings suggest that Earth may have had water at the time of that impact, and some of that water may have been transferred to the moon. Contact: Kevin Stacey Public Release: 8-May-2013
Study finds PCB concentrations same in urban and rural areas Despite the expectation of a large environmental exposure difference, UI researchers report that mothers and children in East Chicago, Ind., and Researchers at the University of Iowa report that residents in a rural area in Iowa have the same PCB levels in their blood as residents in urbanized East Chicago. Results appear in the journal Environmental Science & Technology. Contact: Richard Lewis Public Release: 8-May-2013
The effect of climate change on iceberg production by Greenland glaciers While the impact of climate change on the surface of the Greenland ice sheet has been widely studied, a clear understanding of the key process of iceberg production has eluded researchers for many years. Published in Nature this week, a new study presents a sophisticated computer model that provides a fresh insight into the impact of climate change on the production of icebergs by Greenland glaciers, and reveals that the shape of the ground beneath the ice has a strong effect on its movement. Contact: Paul B Holland Public Release: 7-May-2013
AGU journal highlights -- May 7, 2013 Featured in this release are research papers on the following topics: "Graphite lubricates fault zones," "Sediment processes can be significant source of ambient noise," "Evolution of the Qin Mountains as part of the supercontinent Rodinia," "Studying how flocculation affects acoustic reflection," "How do braided river dynamics affect sediment storage," and "Charting the growth of the Turkish-Iranian plateau." Contact: Mary Catherine Adams Public Release: 6-May-2013
The Black Sea is a goldmine of ancient genetic data When Woods Hole Oceanographic Institution marine paleoecologist Marco Coolen was mining through vast amounts of genetic data from the Black Sea sediment record, he was amazed about the variety of past plankton species that left behind their genetic makeup (i.e., the plankton paleome). Contact: Media Relations Office Public Release: 6-May-2013
Zeal to ensure clean leafy greens takes bite out of riverside habitat in California As consumers, we like to hear that produce growers and distributors go above and beyond food safety mandates to ensure that healthy fresh fruits and vegetables do not carry bacteria or viruses that can make us sick. But in California's Salinas Valley, some more vigorous interventions are cutting into the last corners of wildlife habitat, without evidence of food safety benefits, creating tensions between wildlife preservation and food safety where none need exist. Contact: Liza Lester Public Release: 6-May-2013
AAAS leverages innovative technique to confirm oil slicks in Turkmenistan Analysis by the nonprofit American Association for the Advancement of Science (AAAS) confirms the release of oil into the waters of the Caspian Sea off Turkmenistan, and demonstrates an innovative new use of publicly available imaging technology. Contact: Ginger Pinholster Public Release: 2-May-2013
GSA's top geoscience journal posts 9 new articles New Geology papers cover ancient iron oceans; the Antarctic and global climate/carbon-cycle feedbacks; evidence of catastrophic spillover from kilometer-deep bodies of water on Mars; the role of volcanic emissions in ozone depletion; "fingerprinting" San Andreas fault sandstone; a climax in Earth's mountain-building cycle; the last place on land undergoing continental breakup; garnet as a proxy for subduction zone dehydration; and evidence of migrating mammals at the Venta del Moro fossil site, Spain. Contact: Kea Giles Public Release: 1-May-2013
Solar-powered nanofilters pump in antibiotics to clean contaminated water Using the same devious mechanism that enables some bacteria to shrug off powerful antibiotics, scientists have developed solar-powered nanofilters that remove antibiotics from the water in lakes and rivers twice as efficiently as the best existing technology. Their report appears in ACS' journal Nano Letters. Contact: Michael Bernstein Public Release: 29-Apr-2013
No Redoubt: Volcanic eruption forecasting improved Forecasting volcanic eruptions with success is heavily dependent on recognizing well-established patterns of pre-eruption unrest in the monitoring data. But in order to develop better monitoring procedures, it is also crucial to understand volcanic eruptions that deviate from these patterns. New research retrospectively documented and analyzed the period immediately preceding the 2009 eruption of the Redoubt volcano in Alaska, which was characterized by an abnormally long period of pre-eruption seismic activity that's normally associated with short-term warnings of eruption. Contact: Diana Roman Public Release: 25-Apr-2013
New grass hybrid could help reduce the likelihood of flooding Collaboration of BBSRC-funded scientists use hybridized forage grass to combine fast root growth and efficient soil water retention. Field experiments show Festulolium cultivar reduces water runoff by up to 51 percent against nationally-recommended cultivar. Potential for the hybrid to capture more water and reduce runoff and likelihood of flood generation. Contact: Chris Melvin, Media Officer Public Release: 24-Apr-2013
Rethinking early atmospheric oxygen Using a quantitative model, a research team of biogeochemists at the University of California, Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere, arguably the most important biological event in Earth's history, and its relationship to the sulfur cycle. Their model, the researchers argue, is one step toward a more integrated view of how Earth's crust, mantle and atmosphere interact in the global sulfur cycle. Contact: Iqbal Pittalwala Public Release: 23-Apr-2013
AGU journal highlights -- 23 April 2013 Featured in this release are research papers on the following topics: "Beachfront nourishment decisions: the "sucker-free rider" problem," "Identifying the physical processes that control the stratigraphic record," "Uplift of Zagros Mountains slows down convergence of two plates," "Extensive Antarctic campaign finds cold bias in satellite records," "Measuring tidal displacement using GPS," and "Hydrology affects carbon storage potential of prairie potholes." Contact: Mary Catherine Adams Public Release: 23-Apr-2013
Geosphere features top geoscience technology, including LiDAR, EarthScope, CHIRP, ALSM, and IODP Geosphere papers posted online 4 and 17 April 2013 use LiDAR, ALSM (Airborne Laser Swath Mapping), EarthScope, CHIRP (compressed high-intensity radar pulse), and IODP (International Ocean Drilling Program) data to further geoscientists' understanding of the nature of Earth. New locations studied: Sakhalin, in the Russian far east; Peña de Bernal nation monument, México; and Andalshatten batholith, central Norway. Geosphere's online-only articles feature a variety of article lengths, stunning figures, and animations or 3-D digital displays. Contact: Kea Giles Public Release: 23-Apr-2013
Study: Source of organic matter affects Bay water quality A study led by researchers at the Virginia Institute of Marine Science reveals that organic carbon in runoff from urbanized landscapes is more likely to persist as it is carried downstream, thus contributing to low-oxygen "dead zones" in coastal waters. Contact: David Malmquist Public Release: 22-Apr-2013
Health impact assessments prove critical public health tool As natural gas drilling expands, policymakers, communities and public health experts are turning to health impact assessments to predict the effects of gas drilling on communities, according to a new study. Contact: David Kelly Public Release: 22-Apr-2013
Rivers act as 'horizontal cooling towers,' study finds Running two computer models in tandem, scientists from the University of New Hampshire have detailed for the first time how thermoelectric power plants interact with climate, hydrology, and aquatic ecosystems throughout the northeastern US and show how rivers serve as "horizontal cooling towers" that provide an important ecosystem service to the regional electricity sector -- but at a cost to the environment. Contact: David Sims |