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landslides

Maps of debris flow similarity index (DFSI) and the corresponding lengths of those debris flow channel segments.
Posted inEditors' Highlights

Debris Flows Keep the Landscape on the Straight and Narrow

by Adam Booth 6 April 20223 May 2022

New methods for identifying debris flow-shaped channels improve hazard quantification and highlight how high uplift rates and fractured bedrock facilitate debris flow-dominated landscape evolution.

Tree-lined cliffs and hills rise from a coastal beach where ocean waves gently wash ashore.
Posted inFeatures

Exploring Subduction Zone Geohazards on Land and at Sea

by Mong-Han Huang, Kristin Morell, Alison Duvall, Sean F. Gallen and George E. Hilley 25 March 202225 March 2022

A new initiative is bringing together scientists to address fundamental questions about subduction zone geohazards, using the latest advances in observation technology and computational resources.

Map of the central-eastern Nepal Himalaya showing the locations of more than 12,800 landslides over a 30-year period.
Posted inEditors' Highlights

History Matters When Gauging Hillslope Susceptibility to Failure

by Matthew Brain 24 March 202212 April 2022

Using susceptibility models to forecast the potential locations of landslides is a key tool in mitigating landslide hazard, but are existing approaches appropriate in dynamic mountainous settings?

Overhead image from rescue helicopter of damage in the path of a debris flow at the base of burned hills in Montecito, Calif.
Posted inNews

No Relief from Rain: Climate Change Fuels Compound Disasters

by Leah Campbell 17 December 202117 December 2021

Climate change is increasing the risk of fire-rain events, raising mudslide concerns in fire-prone communities.

Active layer detachments in the Brooks Range, Alaska
Posted inResearch Spotlights

Ice Lenses May Cause Many Arctic Landslides

by Morgan Rehnberg 13 August 202120 October 2021

When permafrost thaw reaches concentrations of ice underneath the surface, it may trigger local soil instability.

Aerial view of a large mudslide that flowed down a forested hillslope and into a small community
Posted inScience Updates

Satellites Support Disaster Response to Storm-Driven Landslides

by R. Emberson, D. B. Kirschbaum, T. Stanley, P. Amatya and S. Khan 9 August 202119 November 2021

Extreme precipitation can trigger deadly landslides. Satellite-based tools provide regional perspectives on landslide hazards, help assess risks in near-real time, and guide emergency responses.

The research vessel CCGS Hudson in Southwind Fjord, Baffin Island, with the iceberg that initiated a submarine landslide in the background.
Posted inNews

An Iceberg May Have Initiated a Submarine Landslide

by Andrew Chapman 20 July 20216 December 2021

A new study shows that icebergs may initiate submarine landslides when they collide with the seafloor.

Debris flows during the largest rainstorm following the 2009 Station Fire in California.
Posted inResearch Spotlights

The Wildfire One-Two: First the Burn, Then the Landslides

by Aaron Sidder 22 June 202128 September 2021

Severe wildfires strip away plant cover and reduce the soil’s ability to hold water. A new study develops a model to better understand landslide risk following a burn.

Map of the study site in the northern California Coast Ranges.
Posted inEditors' Highlights

Thickness and Strength of Slow-moving Landslides Revealed

by O. Marc 22 April 202128 September 2021

Hundreds of slow-moving landslides’ deformation patterns were inverted to obtain their thickness and frictional strength, revealing that larger landslides are weaker and thinner than smaller ones.

People stand atop debris from a huge slump landslide in Uganda.
Posted inNews

Landslides Mar the “Pearl of Africa”

by H. Mafaranga 19 April 202126 October 2021

Behind Uganda’s lavish beauty, climate change has taken its toll: Death, destroyed properties, and displaced communities increase as above-normal rainfall floods the country.

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