Geography

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

  • Tipping points are real: Gradual changes in CO2 levels can induce abrupt climate changes
    on June 23, 2017 at 2:04 pm

    During the last glacial period, within only a few decades the influence of atmospheric CO2 on the North Atlantic circulation resulted in temperature increases of up to 10 degrees Celsius in Greenland -- as indicated by new climate calculations. […]

  • Satellite data to map endangered monkey populations on Earth
    on June 22, 2017 at 4:19 pm

    Using a combination of satellite and ground data, a research team can map multiple indicators of monkey distribution, including human activity zones as inferred from roads and settlements, direct detections from mosquito-derived iDNA, animal sound recordings, plus detections of other species that are usually found when monkeys are present, such as other large vertebrates. […]

  • Flooding risk: America's most vulnerable communities
    on June 21, 2017 at 3:40 pm

    Floods are the natural disaster that kill the most people. They are also the most common natural disaster. As the threat of flooding increases worldwide, a group of scientists have gathered valuable information on flood hazard, exposure and vulnerability in counties throughout the US. […]

  • Warming temperatures threaten sea turtles
    on June 21, 2017 at 3:39 pm

    Warmer temperatures associated with climate change may lead to higher numbers of female sea turtles and increased nest failure, suggests a new report. […]

  • Climate change label leads to climate science acceptance
    on June 21, 2017 at 2:32 pm

    Labels matter when it comes to acceptance of climate science, suggests new research. For example, explain authors of a new report, the US public doubts the existence of 'global warming' more than it doubts 'climate change.' […]

  • Hot summer frequents Europe-west Asia and northeast Asia after the mid-1990s
    on June 21, 2017 at 2:30 pm

    A recent research identifies a nonuniform warming pattern in summer after the mid-1990s over the Eurasian continent, with a predominant amplified warming over Europe-West Asia and Northeast Asia but much weaker warming over Central Asia. The study also implies that there will still be a strong warming over Europe-West Asia and Northeast Asia in the coming decade. […]

  • Ocean predicts future northwestern European and Arctic climate
    on June 21, 2017 at 2:01 pm

    There is a clear potential for practical and useful predictions of northwestern European and Arctic climate based on the state of the ocean, new research indicates. […]

  • Wave beams mix and stir the ocean to create climate
    on June 20, 2017 at 3:42 pm

    Waves deep within the ocean play an important role in establishing ocean circulation, arising when tidal currents oscillate over an uneven ocean bottom. The internal waves generated by this process stir and mix the ocean, bringing cold, deep water to the surface to be warmed by the sun. Investigators now explain how to tell which way internal waves will go. The proposed theory unifies several previously understood explanations of wave propagation. […]

  • Great opportunities for marine research with new underwater vehicle
    on June 20, 2017 at 1:45 pm

    An autonomous underwater vehicle offers promise for advanced marine research use. This will make it possible to conduct detailed studies of the seabed at great depths and track the climate thousands of years back in time, say researchers. […]

  • Wet and stormy weather lashed California coast... 8,200 years ago
    on June 20, 2017 at 1:32 pm

    An analysis of stalagmite records from White Moon Cave in the Santa Cruz Mountains shows that 8200 years ago the California coast underwent 150 years of exceptionally wet and stormy weather. This is the first high resolution record of how the Holocene cold snap affected the California climate. […]

  • Watching cities grow
    on June 20, 2017 at 1:31 pm

    Three million measurement points in one square kilometer: a world record has now been set in information retrieval from satellite data. Thanks to new algorithms, the researchers succeeded in making four-dimensional point clouds of Berlin, Las Vegas, Paris and Washington, D.C. from images stacks of the TerraSAR-X radar satellite. Next the scientists plan to create four-dimensional models of all cities in the world. […]

  • Fighting global warming and climate change requires a broad energy portfolio
    on June 19, 2017 at 7:22 pm

    Can the continental United States make a rapid, reliable and low-cost transition to an energy system that relies almost exclusively on wind, solar and hydroelectric power? While there is growing excitement for this vision, a new study describes a more complicated reality. Researchers argue that achieving net-zero carbon emissions requires the incorporation of a much broader suite of energy sources and approaches. […]

  • Volcanic eruptions triggered dawn of the dinosaurs
    on June 19, 2017 at 7:15 pm

    Huge pulses of volcanic activity are likely to have played a key role in triggering the end Triassic mass extinction, which set the scene for the rise and age of the dinosaurs, new research has found. […]

  • Chemistry of sea spray particles linked for first time to formation process
    on June 19, 2017 at 7:15 pm

    For the first time, researchers have identified what drives the observed differences in the chemical make-up of sea spray particles ejected from the ocean by breaking waves. […]

  • Keeping California's natural gas system safe
    on June 19, 2017 at 5:29 pm

    The massive natural gas leak at Aliso Canyon shined a light on California’s aging natural gas infrastructure. And five years of extreme drought also exacted its toll on transmission pipelines. Now the researchers have been awarded millions by the California Energy Commission for two projects aimed at improving the safety and reliability of the state’s natural gas system. […]

  • Scientists throw light on mysterious ice age temperature jumps
    on June 19, 2017 at 4:58 pm

    Scientists believe they have discovered the reason behind mysterious changes to the climate that saw temperatures fluctuate by up to 15°C within just a few decades during the ice age periods. […]

  • Seasonal rain and snow trigger small earthquakes on California faults
    on June 15, 2017 at 6:28 pm

    California's earthquake faults continually accumulate stress until they fail in an earthquake. Seismologists studied the impact of the flexing of Earth's crust under the load of winter rains and subsequent unloading during summer drought, and found that the up and down movement of the mountains changes the stresses on the state's faults, making them fail slightly more often as the snows melt and the rivers drain in late summer and early fall. […]

  • Japanese slow earthquakes could shed light on tsunami generation
    on June 15, 2017 at 6:27 pm

    Understanding slow-slip earthquakes in subduction zone areas may help researchers understand large earthquakes and the creation of tsunamis, according to researchers who used data from instruments placed on the seafloor and in boreholes east of the Japanese coast. […]

  • Widespread snowmelt in West Antarctica during unusually warm summer
    on June 15, 2017 at 12:46 pm

    An area of West Antarctica more than twice the size of California partially melted in 2016 when warm winds forced by an especially strong El Nino blew over the continent. […]

  • Hydroelectric dams may jeopardize the Amazon's future
    on June 14, 2017 at 5:37 pm

    Hundreds of built and proposed hydroelectric dams may significantly harm life in and around the Amazon by trapping the flow of rich nutrients and modifying the climate from Central America to the Gulf of Mexico, experts report. […]

  • Earning a living in a changing climate: The plant perspective
    on June 14, 2017 at 3:29 pm

    Some of the world's plants are using 'last-stand' strategies to survive rather than thrive as global climate change gathers apace. Ecologists assessed plant strategies in less suitable climates by tapping into big data collated from 16 different countries in 3 different continents over the past 50 years. […]

  • Ancient otter tooth found in Mexico suggests mammals migrated across America
    on June 14, 2017 at 1:29 pm

    An ancient otter tooth recently discovered in Mexico suggests certain mammals migrated across America during the Miocene geologic epoch, roughly 23 million to 5.3 million years ago. The new hypothesized route questions other theories such as migrations above Canada and through Panama, and has implications for a much larger biologic event -- the Great American Biotic Interchange, when land bridges were formed and animals dispersed to and from North America and South America. […]

  • Large Canadian Arctic climate change study cancelled due to climate change
    on June 13, 2017 at 7:06 pm

    The Science Team of the Canadian Research Icebreaker CCGS Amundsen has cancelled the first leg of the 2017 Expedition due to complications associated with the southward motion of hazardous Arctic sea ice, caused by climate change. […]

  • Winning climate strategy demands details
    on June 12, 2017 at 9:09 pm

    Examining the daily minutia of climate, not just temperature, but also sunshine, precipitation and soil moisture simultaneously all over a country gives a better understanding of how variable a land's climate can be. That information is crucial when countries are setting policies aimed at growing food, protecting water supplies and the environment and stemming disease outbreaks. […]

  • Worldwide hotspots for alien plants and animals: Islands and coastal regions
    on June 12, 2017 at 3:54 pm

    The distribution of established alien species in different regions of the world varies significantly. Until now, scientists were uncertain about where the global hotspots for established alien species are located. Most alien species can be found on islands and coastal regions. […]

  • Iqaluit could start running out of fresh water by 2024
    on June 12, 2017 at 3:53 pm

    Without action, the supply of fresh water in Iqaluit will begin to dwindle by 2024 due to climate change and increased demand, new research has found. […]

  • Evaluating greenhouse gas emissions in an irrigated cropping system
    on June 12, 2017 at 1:40 pm

    New, enhanced-efficiency fertilizer can reduce N2O emissions from irrigated cropping systems. […]

  • Why microplastic debris may be the next big threat to our seas
    on June 9, 2017 at 1:27 pm

    More than five trillion pieces of plastic debris are estimated to be in our oceans, though many are impossible to see with the naked eye. […]

  • Scientists advancing hope for reefs in the Philippines
    on June 8, 2017 at 6:55 pm

    Researchers have returned from the Philippines with new species discoveries and deeper insights into threatened coral reef ecosystems. […]

  • The mysterious bend in the Hawaiian-Emperor chain
    on June 8, 2017 at 4:36 pm

    The volcanic islands of Hawaii represent the youngest end of a 80 million years old and roughly 6,000 kilometers long mountain chain on the ground of the Pacific Ocean. The so-called Hawaiian-Emperor chain consisting of dozens of volcanoes is well known for its peculiar 60 degrees bend. The cause for this bend has been heavily debated for decades. Scientists now offer an explanation in a new study. […]