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How volcanic eruptions cause tsunamis

This study investigates the effect of pyroclastic flows on tsunami generation. The authors analyzed several possible mechanisms that occur when the particle rich flows encounter water and conclude ...

Wind Erosion Research Unit

This website provides a synopsis of wind erosion, which can threaten the sustainability of natural resources. The USDA Wind Erosion Unit provides maps of areas at risk for wind erosion and drought, ...

Alaska Volcano Observatory

This resource contains general information about the location and activity of volcanoes in Alaska, including St. Paul and St. George Islands.

Improving earthquake warning in Costa Rica

This resource provides an abstract. This study examines seismic waves from a segment of the Middle America subduction zone below Central America that are capable of producing strong earthquakes. ...

Stopping stick-slip seismic events?

This resource provides an abstract. This study models underground frictional resistance in stick-slip seismic events in order to determine the amount of energy needed to weaken a fault plane enough ...

Using GPS for earthquake imaging

This resource provides an abstract. The authors used a dense array of Global Positioning System (GPS) stations to model how the Earth slipped during the 2003 8.0-magnitude Tokachi-Oki earthquake near ...

NOAA Indian Ocean Tsunami Animation

This Quicktime visualization from NOAA concentrates on the wave propagation as it occurred in the Indian Ocean as a result of the Sumatra earthquake. This animation can be paused, rewound and ...

3-D Simulations of Magnitude 7.1 Earthquakes Along the Hayward Fault

This set of simulations presents the results of simulated ground motions in the San Francisco Bay Area due to earthquakes of Magnitude 7.1 along the Hayward fault. Three rupture scenarios are ...

Crustal structure and tectonics from the Los Angeles basin to the Mojave Desert, southern California
A seismic refraction and low-fold reflection survey, known as the Los Angeles Region Seismic Experiment (LARSE), was conducted along a transect extending from Seal Beach, California, to the Mojave ...

Misconception of energy release in earthquakes
Analyzes how textbooks define and describe an earthquake focus or hypocenter. Provides examples from textbooks that reflect an absence of precision in words and diagrams that can foster ...

Volcanic Hazard from Iceland: Analysis and Implications of the Eyjafjallajokull Eruption

This report examines the Eyjafjallajökull eruption in Iceland of April 2010. It provides an integrated analysis covering volcanology, geophysics, meteorology, statistics, engineering, hazard and ...

Scent of a myth: tectonics, geochemistry and geomythology at Delphi (Greece)
Extensive geochemical investigation (of water, travertine, soil and diffuse gas), coupled with geo-structural analysis, provides new insights into local fault-fluid interaction and allows us to ...

Rainfall-induced lahars in the Belham Valley, Montserrat, West Indies
Rain falling on loose volcanic debris over the Soufriere Hills Volcano, Montserrat generates hazardous floods in the Belham Valley. These rainfall-induced lahars vary greatly in discharge and ...

Hurricane Katrina Special Feature

This National Wetlands Research Center (NWRC) clearinghouse provides links to information related to Hurricanes Katrina and Rita. Information includes science for emergency response and recovery, ...

California Burning: A multimedia project

This multimedia resource provides an overview of wildfire risk and response to the risk in California. Text, video, images, and data are used to discuss how drought and overgrowth of forests play a ...

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