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  • Sinking land will exacerbate flooding from sea level rise in Bay Area
    on March 7, 2018 at 7:14 pm

    Hazard maps use estimated sea level rise due to climate change to determine flooding risk for today's shoreline, but don't take into account that some land is sinking. A precise study of subsidence around San Francisco Bay shows that for conservative estimates of sea level rise, twice the area is in danger of flooding by 2100 than previously thought. Some landfill is sinking 10 mm per year, threatening the airport and parts of Silicon Valley. […]

  • Flood risk from American rivers is greatly underestimated
    on February 28, 2018 at 4:25 pm

    A groundbreaking new study has found that 41 million Americans are at risk from flooding rivers, which is more than three times the current estimate --- based on regulatory flood maps --- of 13 million people. […]

  • Stable gas hydrates can trigger landslides
    on February 20, 2018 at 9:12 pm

    Like avalanches onshore, there are different processes that cause submarine landslides. One very widespread assumption is that they are associated with dissociating gas hydrates in the seafloor. However, scientists have now found evidence that the context could be quite different. […]

  • Why the seafloor starts moving
    on February 13, 2018 at 5:04 pm

    When the seabed loses its stability and starts to move, it often happens in much larger dimensions than landslides ashore -- and at slopes with very low gradients. At the same time, discplacement of large amounts of sediment under water scan cause devastating tsunamis. However, why and when submarine landslides develop is hardly understood. Marine scientists have now published possible causes based on observations on submarine landslides off the coast of northwest Africa. […]

  • Tiny fossils, huge landslides: Are diatoms the key to Earth's biggest slides?
    on February 12, 2018 at 6:34 pm

    The biggest landslides on Earth aren't on land, but on the seafloor. These mega-slides can move thousands of cubic kilometers of material, and sometimes trigger tsunamis. Yet, remarkably, they occur on nearly flat slopes of less than three degrees. […]

  • Coastal water absorbing more carbon dioxide
    on January 31, 2018 at 11:47 pm

    Oceanographers reveal that the water over the continental shelves is shouldering a larger than expected portion of atmospheric carbon dioxide. The findings may have important implications for scientists focused on understanding how much carbon dioxide can be released into the atmosphere while still keeping warming limited. […]

  • Global warming poses substantial flood risk increase for Central and Western Europe
    on January 29, 2018 at 2:29 pm

    Europe is expected to see a considerable increase in flood risk in coming years, even under an optimistic climate change scenario of 1.5°C warming compared to pre-industrial levels. […]

  • Large volcanic island flank collapses trigger catastrophic eruptions
    on January 18, 2018 at 7:29 pm

    New research not only implies a link between catastrophic volcanic eruptions and landslides, but also suggests that landslides are the trigger. At the heart of Tenerife and standing almost 4 km high, Teide is one of the largest volcanoes on Earth. Over a period of several hundred thousand years, the previous incarnations of Teide have undergone a repeated cycle of very large eruptions, collapse, and regrowth. […]

  • NASA calculated heavy rainfall leading to California mudslides
    on January 12, 2018 at 3:40 am

    Winter rains falling on recently burned ground triggered deadly mudslides in Santa Barbara County, California on Jan. 9. NASA calculated the amount of rain fall between Jan. 8 and 10, 2018 and calculated the potential for landslides. […]

  • How much soil goes down the drain: New data on soil lost due to water
    on December 15, 2017 at 5:10 pm

    According to a new study, almost 36 billion tons of soil is lost every year due to water, and deforestation and other changes in land use make the problem worse. The study also offers ideas on how agriculture can change to become a part of the solution from being part of the problem. […]

  • The planet’s largest landslides happen on submarine volcanoes
    on December 12, 2017 at 4:48 pm

    Large volume submarine landslides, triggered by the inception and growth of submarine volcanos, represent among the largest mass movements of sediment on Earth’s surface. These landslides could potentially cause tsunamis, and represent a significant, and as yet unaccounted for marine hazard. […]

  • One in ten historic coastal landfill sites in England are at risk of erosion
    on November 16, 2017 at 12:52 am

    There are at least 1,215 historic coastal landfill sites in England, mostly clustered around estuaries with major cities, including Liverpool, London, and Newcastle on Tyne. An investigation by researchers finds that 122 sites are at risk of starting to erode into coastal waters by 2055 if not adequately protected. […]

  • Changing climate to bring more landslides on logged land, say researchers
    on November 9, 2017 at 2:32 pm

    Researchers say landslides on logged forests will be more widespread as the Northwest climate changes. In a study modelled on clear-cut lands on the Olympic Peninsula, they anticipate the climate of 2045 and conclude that there will be a 7 -11 percent increase in the land that is highly vulnerable to landslides. The researchers say their findings are applicable to the Cascade Mountain Range area as well. […]

  • First coast-to-coast land motion map of Scotland derived from satellite radar images
    on November 7, 2017 at 5:29 pm

    Using hundreds of satellite radar images a research team has created a complete map of mainland Scotland. […]

  • Scientists identify hotspots of coastal risks in Latin America and the Caribbean
    on November 2, 2017 at 7:10 pm

    The catastrophic 2017 hurricane season provided ample demonstrations of the vulnerability of populations and infrastructure in coastal areas to natural disasters. A new study identifies hotspots of coastal risks throughout Latin America and the Caribbean. […]

  • Sea-level rise, not stronger storm surge, will cause future NYC flooding
    on October 23, 2017 at 10:25 pm

    Rising sea levels caused by a warming climate threaten greater future storm damage to New York City, but the paths of stronger future storms may shift offshore, changing the coastal risk for the city, according to a team of climate scientists. […]

  • Why did the 2014 Oso, WA, landslide travel so far?
    on October 23, 2017 at 10:25 pm

    On Saturday, 22 March 2014, a devastating landslide roared across the North Fork of the Stillaguamish River, near Oso, Washington. The landslide killed 43 people as it plowed through the Steelhead Haven neighborhood. When it stopped, after crossing the river, the neighborhood, and State Route 530, the Oso landslide had traveled 1.4 kilometers. […]

  • Salmon sex linked to geological change
    on October 19, 2017 at 2:08 pm

    It turns out that sex can move mountains. Researchers have found that the mating habits of salmon can alter the profile of stream beds, affecting the evolution of an entire watershed. The study is one of the first to quantitatively show that salmon can influence the shape of the land. […]

  • Forest grazing counteracts the effectiveness of trees to reduce flood risk
    on October 10, 2017 at 3:46 pm

    Planting trees can reduce flood risk, but a high intensity forest land use, such as grazing, can counteract the positive effect of the trees, a recently published study suggests. The study investigated the rate that water infiltrated the soil under trees at an experimental agroforestry site in Scotland. […]

  • Preservation of floodplains is flood protection
    on September 27, 2017 at 2:23 pm

    The silting of rivers and streams leads to problems for fish, mussels, and other aquatic organisms because their habitats disappear. However, not only intensive agriculture and erosion are destroying these habitats. Now a study refutes this widespread view. In order to save the species living in the river basin -- and protect people from the threat of floods -- rivers need more space, diversity, and freedom. […]

  • Removing nitrate for healthier ecosystems
    on September 27, 2017 at 1:33 pm

    In a new study, researchers have identified nitrate removal hotspots in landscapes around agricultural streams. […]

  • New study analyzes causes of 2010 landslide in Saint-Jude, Quebec
    on September 26, 2017 at 12:59 pm

    A new study discusses triggers of the Saint-Jude landslide in Quebec that occurred in nearly 10,000-year-old sensitive clay sediment that 'liquefies' when disturbed. […]

  • Decade of data shows FEMA flood maps missed 3 in 4 claims
    on September 12, 2017 at 9:05 pm

    An analysis of flood claims in three Houston suburbs from 1999-2009 found that the Federal Emergency Management Agency's 100-year flood plain maps failed to capture 75 percent of flood damages from five serious floods, none of which reached the threshold rainfall of a 100-year event. […]

  • Increasing effective decision-making for coastal marine ecosystems
    on September 7, 2017 at 2:23 pm

    Marine restoration, rather than protection, might be the most cost-effective solution for coastal marine ecosystems suffering from human activities, a new study has found. The study examined how to best benefit coastal marine ecosystems on limited conservation budgets, to help managers better understand the trade-offs. […]

  • Digging in the dirt: Researchers develop new methods for assesing risk of subsurface phosphorus
    on August 17, 2017 at 2:07 pm

    New methods for assessing the loss of phosphorus in soil have now been developed by researchers. While current measurements focus mainly on surface runoff, the new research is looking at the best way to measure the risk of underground phosphorus that winds up in drainage water. […]

  • Florida flood risk study identifies priorities for property buyouts
    on August 17, 2017 at 1:28 pm

    A study of flood damage in Florida proposes prioritizing property buyouts based on flood risk, ecological value, and socioeconomic conditions. Forecasters say an above-normal hurricane season is likely in the Atlantic Ocean this year, while a rising sea level is making Florida increasingly vulnerable to dangerous flooding. […]

  • Climate change shifts timing of European floods
    on August 10, 2017 at 6:15 pm

    A linkage between climate change and floods has been identified using a river flow dataset of unparalleled scale and diversity. This is the first time this link has been demonstrated at a continental scale using observational data. […]

  • The only way is up: Trees help reptiles thrive
    on August 10, 2017 at 2:49 pm

    If graziers leave trees in place on their land, all types of reptiles will benefit, investigators suggest in a new report. […]

  • 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. […]

  • Mangroves vital for environmental decontamination
    on August 3, 2017 at 7:58 pm

    Mangrove trees, particularly their leaf litter, filter copper out of soil and water in Indonesia. […]