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Updated: 4 hours 24 min ago

Ritter Island gives new insights into the dynamics of volcanic landslides

Thu, 16/05/2019 - 16:46
The flanks of many island volcanoes slide very slowly towards the sea. Whether these landslides are forewarnings of a catastrophic collapse or, on the contrary, even reduce its risk, is not yet understood. Geophysicists now show that sporadic, slow landslides on the small volcanic island of Ritter Island in New Guinea preceded a catastrophic collapse.

Quick reconnaissance after 2018 Anchorage quake reveals signs of ground failure

Fri, 26/04/2019 - 18:00
A day after the Nov. 30, 2018, magnitude 7 earthquake in Anchorage, Alaska, US Geological Survey scientists had taken to the skies. The researchers were surveying the region from a helicopter, looking for signs of ground failure from landslides to liquefaction.

Minerals in mountain rivers tell the story of landslide activity upstream

Wed, 24/04/2019 - 20:35
Scientists have come up with a new way of analyzing sand in mountain rivers to determine the activity of landslides upstream, which has important implications for understanding natural hazards in mountainous regions.

Salish seafloor mapping identifies earthquake and tsunami risks

Wed, 24/04/2019 - 17:51
The central Salish Sea of the Pacific Northwest is bounded by two active fault zones that could trigger rockfalls and slumps of sediment that might lead to tsunamis.

Hurricane Harvey provides lessons learned for flood resiliency plans

Wed, 10/04/2019 - 14:59
Scientists used satellite data to map the Houston-Galveston area impacted by Hurricane Harvey to understand why the flooding was so severe and widespread.

Farming for natural profits in China

Mon, 01/04/2019 - 22:14
Expanding monoculture threatens valuable services from land, such as flood control, water purification and climate stabilization. A new approach promises to protect these benefits, while improving biodiversity and human livelihoods in rural areas around the world.

Woolly star plants need catastrophes to live

Tue, 19/03/2019 - 18:51
The endangered Santa Ana Woolly Star depends on catastrophic floods. Thanks to a huge dam, natural floods are now nonexistent in its home turf. Researchers use different soil treatments mimicking flood effects in its preferred habitat, exploring the effectiveness of each towards plant survival.

Getting to the core of underwater soil

Wed, 27/02/2019 - 14:15
Soils all over the Earth's surface are rigorously tested and managed. But what about soils that are down in the murky depths? Some scientists are working to get them the recognition and research they deserve.

More extreme coastal weather events likely to increase bluff erosion, landslide activity

Tue, 26/02/2019 - 22:54
Unstable slopes on Oregon's coastline could see a 30 percent jump in landslide movements if extreme storms become frequent enough to increase seacliff erosion by 10 percent, a new study shows.

Landslides triggered by Hurricane Maria

Thu, 07/02/2019 - 16:26
Hurricane Maria hit the island of Puerto Rico on 20 September 2017 and triggered more than 40,000 landslides in at least three-fourths of Puerto Rico's 78 municipalities. Researchers write that 'the number of landslides that occurred during this event was two orders of magnitude greater than those reported from previous hurricanes.'

Seas may be rising faster than thought

Wed, 30/01/2019 - 19:42
A new study questions the reliability of how sea-level rise in low-lying coastal areas such as southern Louisiana is measured and suggests that the current method underestimates the severity of the problem.