Landslides
Landslides
The squeezing together of converging plates creates steep mountain chains, that often leads to high rainfall rates on their seaward side, creating ripe conditions for landslides onshore and offshore.
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Cascadia Subduction Zone Marine Geohazards
Societal Issue: Uncertainty related to rupture extent, slip distribution, and recurrence of past subduction megathrust earthquakes in the Pacific Northwest (northern CA, OR, WA, and southern BC) leads to ambiguity in earthquake and tsunami hazard assessments and hinders our ability to prepare for future events.
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Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, 3-D CT Core Imaging Laboratory, Core Preparation and Analysis Laboratory and Sample Repositories, Multi-Sensor Core Logger Laboratory, Deep Sea Exploration, Mapping and Characterization, Subduction Zone Science
Probabilistic Forecasting of Earthquakes, Tsunamis, and Earthquake Effects in the Coastal Zone
The nation's coastlines are vulnerable to the interrelated hazards posed by earthquakes, landslides, and tsunamis. In the marine environment these events often occur in concert, and distant triggers can cause severe local effects, making the issue global in scope. As the population continues to migrate toward the coastlines, the social impacts of these hazards are expected to grow.
Coastal and Marine Geohazards of the U.S. West Coast and Alaska
Coastal and marine geohazards are sudden and extreme events beneath the ocean that threaten coastal populations. Such underwater hazards include earthquakes, volcanic eruptions, landslides, and tsunamis.
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Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, 3-D CT Core Imaging Laboratory, Core Preparation and Analysis Laboratory and Sample Repositories, Big Sur Landslides, Deep Sea Exploration, Mapping and Characterization, Subduction Zone Science
USGS-developed lahar detection systems provide warning of lahars
USGS scientists developed an inexpensive, durable, portable, and easily installed system to detect and continuously monitor the arrival and passage of debris flows and floods in river valleys draining active volcanoes.
Landslides Triggered by the 2020 Puerto Rico Earthquake Sequence
A magnitude 6.4 earthquake occurred near Barrio Indios, Guayanilla, Puerto Rico on January 7, 2020. A study of the triggered landslides is ongoing.
Landslide-Induced Tsunamis of Southern Alaska
Working with partners to study and inform the Nation about geohazard risks
Landslide Monitoring Stations
Click on the map to view monitoring site locations. Click on the marker for a link to each site.
Tsunamis
The 2004 Indian Ocean, 2010 Chilean, and 2011 Tohoku disasters have shown how tsunamis are significant threats to coastal communities. To help U.S. coastal communities prepare for future tsunamis, the Hazards Vulnerability Team completed projects related to population exposure and sensitivity, pedestrian evacuation modeling, and vertical-evacuation decision support. A recent article of ours in the...
Hazards Vulnerability Team
Our country faces a wide array of natural hazards that threaten its safety, security, economic well-being, and natural resources. To minimize future losses, communities need a clear understanding of how they are vulnerable to natural hazards and of strategies for increasing their resilience. Vulnerability and resilience are influenced by (1) how communities choose to use hazard-prone land, (2) pre...