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Landslide Hazards Program

The primary objective of the National Landslide Hazards Program is to reduce long-term losses from landslide hazards by improving our understanding of the causes of ground failure and suggesting mitigation strategies.

News

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Federal Scientists Assess Unusual River-Erosion Disaster in Ecuadorian Amazon

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The Monitor Newsletter - Vol. 10 | Issue February 2023

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Columbia River Gorge Landslides - New Interactive Geonarrative

Publications

Revising supraglacial rock avalanche magnitudes and frequencies in Glacier Bay National Park, Alaska

The frequency of large supraglacial landslides (rock avalanches) occurring in glacial environments is thought to be increasing due to feedbacks with climate warming and permafrost degradation. However, it is difficult to (i) test this; (ii) establish cause–effect relationships; and (iii) determine associated lag-times, due to both temporal and spatial biases in detection rates. Here we applied the

Simulating debris flow and levee formation in the 2D shallow flow model D-Claw: Channelized and unconfined flow

Debris flow runout poses a hazard to life and infrastructure. The expansion of human population into mountainous areas and onto alluvial fans increases the need to predict and mitigate debris flow runout hazards. Debris flows on unconfined alluvial fans can exhibit spontaneous self-channelization through levee formation that reduces lateral spreading and extends runout distances compared to unchan

Landslides triggered by the 2002 M 7.9 Denali Fault earthquake, Alaska, USA

The 2002 M 7.9 Denali earthquake in Alaska, USA, was the largest inland earthquake in North America in nearly 150 years. The earthquake involved oblique thrusting but mostly strike-slip motion, and faults ruptured the ground surface over 330 km. Fault rupture occurred in a rugged, mountainous, subarctic environment with extensive permafrost and variable glaciation, geology, and groundwater presenc

Science

Overview of Hazards and Risk Assessments

Landslide hazard and risk assessments help people understand the dangers from landslides to their towns and cities, homes, facilities, and businesses. Landslide hazard assessments are estimates of the probability that landslides will affect a particular area or location, typically within a given timeframe.
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Overview of Hazards and Risk Assessments

Landslide hazard and risk assessments help people understand the dangers from landslides to their towns and cities, homes, facilities, and businesses. Landslide hazard assessments are estimates of the probability that landslides will affect a particular area or location, typically within a given timeframe.
Learn More

San Lorenzo, Puerto Rico Landslide Monitoring Station

The San Lorenzo monitoring station is located in a moderately vegetated area underlain by Cretaceous volcaniclastic rock.
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San Lorenzo, Puerto Rico Landslide Monitoring Station

The San Lorenzo monitoring station is located in a moderately vegetated area underlain by Cretaceous volcaniclastic rock.
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Naranjito, Puerto Rico Landslide Monitoring Station

The Naranjito monitoring site is also in a heavily vegetated area underlain by Cretaceous volcaniclastic rock.
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Naranjito, Puerto Rico Landslide Monitoring Station

The Naranjito monitoring site is also in a heavily vegetated area underlain by Cretaceous volcaniclastic rock.
Learn More