Geography

Geography News -- ScienceDaily Geography. Read the latest geographical research from universities and institutes around the world.

  • Hot spot at Hawaii? Not so fast
    on August 18, 2017 at 3:58 pm

    Geophysicists use a new model to conclude that volcanic hot spots around the globe aren't moving as fast as recently thought. […]

  • Study validates East Antarctic ice sheet to remain stable even if western ice sheet melts
    on August 17, 2017 at 8:20 pm

    A new study validates that the central core of the East Antarctic ice sheet should remain stable even if the West Antarctic ice sheet melts. […]

  • New gene catalog of ocean microbiome reveals surprises
    on August 17, 2017 at 8:20 pm

    Oceanographers report completing the largest single-site microbiome gene catalog constructed to date. With this new information, the team discovered nutrient limitation is a central driver in the evolution of ocean microbe genomes. […]

  • Reed warblers have a sense for magnetic declination
    on August 17, 2017 at 4:21 pm

    Researchers recently showed that migratory reed warblers depend on an internal geomagnetic map to guide them on their long-distance journeys. But it wasn't clear how the birds were solving the difficult 'longitude problem,' determining where they were along the east-west axis and which way to go. The team's latest report shows birds rely on changes from east to west in magnetic declination, the angular difference between geographic north and magnetic north. […]

  • Measuring global biodiversity change
    on August 17, 2017 at 1:32 pm

    A new article shows how Essential Biodiversity Variables can be produced to measure biodiversity change at a global scale. […]

  • Larvaceans provide a pathway for transporting microplastics into deep-sea food webs
    on August 16, 2017 at 6:51 pm

    A new article shows that filter-feeding animals called giant larvaceans can collect and consume microplastic particles, potentially carrying microplastics to the deep seafloor. […]

  • Greenland ice flow likely to speed up
    on August 16, 2017 at 6:18 pm

    Flow of the Greenland Ice Sheet is likely to speed up in the future, despite a recent slowdown, because its outlet glaciers slide over wet sediment, not hard rock, new research based on seismic surveys has confirmed. This sediment will become weaker and more slippery as global temperatures rise and meltwater supply becomes more variable. The findings challenge the view that the recent slowdowns in ice flow would continue in the long term. […]

  • Mystery of how first animals appeared on Earth solved
    on August 16, 2017 at 5:47 pm

    Research has solved the mystery of how the first animals appeared on Earth, a pivotal moment for the planet without which humans would not exist. […]

  • Modern genetic sequencing tools give clearer picture of how corals are related
    on August 16, 2017 at 5:46 pm

    As corals face threats from ocean warming, a new study uses the latest genetic-sequencing tools to help unravel the relationships between three similar-looking corals. […]

  • Radioactive 129I waste used to track ocean currents for 15,000 km after discharge from nuclear...
    on August 16, 2017 at 2:03 pm

    Radioactive 129I has traveled the equivalent of a third of the way round the globe, since being released from nuclear fuel reprocessing plants in the UK and France. The iodine's 15,000 km journey begins in the nuclear plants at Sellafield and La Hague and continues via the Arctic Ocean and then southward via the Grand Banks towards Bermuda, where it is found at very low concentrations about 20 years later. […]

  • Tiny fraction of oceans could meet world's fish demand
    on August 14, 2017 at 4:53 pm

    Covering 70 percent of Earth's surface, the world's oceans are vast and deep. So vast, in fact, that nearly every coastal country has the potential to meet its own domestic seafood needs through aquaculture. In fact, each country could do so using a tiny fraction of its ocean territory. […]

  • Urban floods intensifying, countryside drying up
    on August 14, 2017 at 1:29 pm

    Drier soils and reduced water flow in rural areas -- but more intense rainfall that overwhelms infrastructure and causes flooding and stormwater overflow in urban centers. That's the finding of an exhaustive study of the world's river systems, based on data collected from more than 43,000 rainfall stations and 5,300 river monitoring sites across 160 countries. […]

  • World's largest volcanic range may lurk beneath Antarctic ice
    on August 14, 2017 at 1:27 pm

    West Antarctica's vast ice sheet conceals what may be the largest volcanic region on Earth, new research has revealed. […]

  • New technique offers clues to measure the deoxygenation of the ocean
    on August 9, 2017 at 6:20 pm

    The living, breathing ocean may be slowly starting to suffocate. More than two percent of the ocean's oxygen content has been depleted during the last half century, according to reports, and marine 'dead zones' continue to expand throughout the global ocean. This deoxygenation, triggered mainly by more fertilizers and wastewater flowing into the ocean, pose a serious threat to marine life and ecosystems. […]

  • Cause of Atlantic coastline's sea level rise hot spots now revealed
    on August 9, 2017 at 6:01 pm

    Seas rose in the southeastern US between 2011 and 2015 by more than six times the global average sea level rise that is already happening due to human-induced global warming, new research shows. The combined effects of El Niño (ENSO) and the North Atlantic Oscillation (NAO), both of which are naturally occurring climate processes, drove this recent sea level rise hot spot, according to the study. […]

  • Super-heatwaves of 55°C to emerge if global warming continues
    on August 9, 2017 at 11:38 am

    Heatwaves amplified by high humidity can reach above 40°C and may occur as often as every two years, leading to serious risks for human health. If global temperatures rise with 4°C, a new super heatwave of 55°C can hit regularly many parts of the world, including Europe, warn researchers. […]

  • 2016 was another warm year, report confirms
    on August 9, 2017 at 11:33 am

    A new report confirms that 2016 was another exceptionally warm year, with global temperature having reached 0.77± 0.09 degrees C above its level between 1961 and 1990. […]

  • Not all glaciers in Antarctica have been affected by climate change
    on August 8, 2017 at 10:23 pm

    The effects of climate change, which are apparent in other parts of the Antarctic continent, are not yet observed for glaciers in the western Ross Sea coast, new research indicates. […]

  • No longer water under the bridge, statistics yields new data on sea levels
    on August 8, 2017 at 6:59 pm

    While the scientific community has long warned about rising sea levels and their destructive impact on some of the United States' most populous cities, researchers have developed a new, statistical method that more precisely calculates the rate of sea level rise, showing it's not only increasing, but accelerating. […]

  • Laser mapping project shows effects of physical changes in Antarctica's Dry Valleys
    on August 8, 2017 at 6:53 pm

    Researchers have publicly released high-resolution maps of Antarctica's McMurdo Dry Valleys, a globally unique polar desert. […]

  • Marine reserves a solution to bycatch problem in oceans
    on August 7, 2017 at 7:17 pm

    Commercial fishermen may be able to catch more of the profitable fish they want with marine reserves than without them, according to a study. […]

  • Scientists improve forecast of increasing hazard on Ecuadorian volcano
    on August 7, 2017 at 7:17 pm

    Researchers have shown an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR). […]

  • The ocean's fastest shark is being threatened by over fishing
    on August 7, 2017 at 3:28 pm

    Study using satellite-tagged shortfin mako sharks shows mortality rates have been dramatically underestimated. […]

  • Researchers crack the 'Karakoram anomaly': Why glaciers near K2 are growing in size
    on August 7, 2017 at 3:28 pm

    Researchers identify 'Karakoram vortex' and explain why glaciers near K2 are growing in size. […]

  • Complex causes of Maldives flooding
    on August 7, 2017 at 12:23 pm

    The causes of coastal flooding in the Maldives are more complex than previously thought, according to a new study. Researchers examined wave and sea level data around historic flood events and found that multiple factors contribute to flooding in the Indian Ocean island chain, which has an average land elevation of just one meter. […]

  • Alaska's North Slope snow-free season is lengthening
    on August 3, 2017 at 6:10 pm

    On the North Slope of Alaska, snow is melting earlier in the spring and the snow-in date is happening later in the fall, according to a new study. […]

  • Climate plays role in decline of one of Asia's most critical water resources
    on August 3, 2017 at 2:31 pm

    Climate variability -- rather than the presence of a major dam -- is most likely the primary cause for a water supply decline in East Asia's largest floodplain lake system, according to an expert. […]

  • Current threats to our oceans revealed
    on August 3, 2017 at 1:59 pm

    A survey of tens of thousands of marine studies from the last decade reveals current threats to our marine environment. These include: the effects of climate change, marine plastic pollution, conservation, as well as social and economic impacts. It is hoped the method used to obtain this information, which has only just been made possible with advances in computational power, will enable the development of robust policies that ensure the future health of our seas. […]

  • Humans have been altering tropical forests for at least 45,000 years
    on August 3, 2017 at 1:19 pm

    A new study counters the view that tropical forests were pristine natural environments prior to modern agriculture and industrialization. Moreover, humans have in fact been having a dramatic impact on such forest ecologies for tens of thousands of years, through techniques ranging from controlled burning of sections of forest to plant and animal management to clear-cutting. […]

  • Where there's fire, there's smoke -- and social media
    on August 3, 2017 at 12:12 am

    The fact that people reliably flock to social media to discuss smoke and fire was the inspiration for a new study by atmospheric scientists. The researchers showed striking correlation between numbers of Facebook users posting about visible smoke, and commonly used datasets for estimating harmful smoke exposure. These include satellite observations, chemical transport models and surface particulate matter measurements. […]