You can use this page to browse through all of the individual visualizations that have been cataloged in our digital library. You can also browse them as collections related to particular topics
Refine the Results
Results 71 - 80 of 243 matches
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 that the volume and density of the basal flow has a close correlation with the wave's amplitude and wavelength, which can be used to model the water movement in lakes, bays and oceans.
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 Japan. Results indicate that displacements of more than one meter occurred in approximately 20 seconds on Hokkaido. It was found that while satellite data are less precise than traditional seismic data, GPS has the advantage in measuring displacement since seismometers cannot distinguish between the ground's acceleration and rotation.
The Physics of Tsunamis
This site from the University of Washington includes a Quicktime movie that shows the propagation of the earthquake-generated 1960 Chilean tsunami across the Pacific Ocean. The page also describes the physics of tsunamis through several exploration questions.
Indian Ocean Tsunami Quicktime Animation
This Quicktime animation, by Dr. Steven Ward at the Institute of Geophysics and Planetary Physics at the University of California - Santa Cruz, shows the tsunami's progress across the Indian Ocean. It also shows some water level graphs and wave run-up heights throughout the region.
Simplified modeling method to estimate lava flow
This resource provides an abstract. A numerical model that produces early predictions for the projected path of a lava flow was created. The two dimensional model is based on a generalized set of equations to describe lava flow propagation. Using real data from the 1991 1993 Mount Etna eruption in Italy, the model effectively reproduced the actual lava flow. This preliminary result indicates the usefulness of this method for forecasting lava flow paths for risk mitigation and predicting the damage from future eruptions.
Background on the 1900 Galveston Hurricane
A report on the 1900 hurricane that devastated Galveston, Texas is available on the AGU Web site. It is a chapter from the book, Hurricane!: Coping with Disaster (AGU, 2003), covering the event itself and lessons learned from it.
Global Climate Animations
This site features animations that show the climatology of the seasonal cycle for the time period 1959-1997. The individual frames in each animation show the map pattern of the long-term average of a particular monthly climate variable. Animation topics include global energy balance, temperature, global water balance, and atmospheric circulation and winds. The animations are used as teaching tools in climatology and global environmental change courses to visualize the seasonal variations of, and interactions among a set of climate variables. Animations are presented as both animated .gif files and as Flash animations.
Tectonic Setting of Active Costa Rican Volcanoes
This 3D visualization provides the tectonic context for volcanic activity in Costa Rica. Active volcanoes are confined to northern Costa Rica because the subducted Cocos plate is relatively deep there. In contrast, almost no volcanic activity happens in the south because of processes directly or indirectly related to the subduction of the Cocos Ridge. Funding for this visualization was provided by the NASA Earth Observing System Higher Education Alliance. For more information, see http://gsdidocs.org/gsdiconf/GSDI-9/papers/TS57.3paper.pdf
Chesapeake Bay Impact Effects
This PowerPoint show depicts the effects (blast, heat, etc.) of the Chesapeake Bay impact. To emphasize the human consequences of asteroid and comet impacts, the slides show what would happen to East Coast communities if an identical object hit the same place today. (The impact actually happened roughly 35 million years ago.) Impact effects were estimated with the Earth Impact Effects Program (www.lpl.arizona.edu/impacteffects/). Effects shown on these slides are at best very approximate, and, consequently, these slides should only be used to stimulate discussions about impact hazards. Satellite images were obtained through the NASA Earth Observing System Higher Education Alliance (GeoBrain) which provided funding for this work. Graphics were created with the Environmental Systems Research Institute (ESRI) family of geographic information system (GIS) products.