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
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Surface Area vs. Size and Shape
This annotated animation shows the potential increase in surface area which results from physical weathering. Students have the opportunity to calculate and compare surface area increases for two different scenarios: when a single mass weathers into cubical blocks versus plate-like blocks. Captions help students through calculations for determining the total surface areas of the different shapes.
Dune Sand Saltation
This short Quicktime movie illustrates some aeolian transport mechanisms as sediments move through creep, saltation, and suspension in a wind tunnel. The movie can be paused and rewound to emphasize important points. This movie might also be useful in the discussion of fluvial transport mechanisms.
Soil Texture and Classification
This interactive site from North Carolina State University shows the kinds of soils developed from different silt, sand, and clay content levels. A ternary diagram shows the range of soil textures based on percentages of each component. The site also provides an example of how to determine the soil texture of a sample composition. Students are also able to enter the percent composition of sand, silt, and clay and predict the soil texture classification themselves.
Natural Hazards: Floods
This site contains an interactive map of recent worldwide flood events. Clicking on the icons on the map will display satellite imagery and a detailed description of the flood events. Information in each description includes time and date of the event(s) as well as cause and effects of the event(s). Users may also choose to follow hotlinks to the detailed flood event information. This site is part of NASA's Earth Observatory, Natural Hazards division.
River Terraces below the 1959 Madison 'Slide
This site describes the formation of river terraces as a consequence of the 1959 Hebgen Lake, Montana earthquake and subsequent Madison slide. The report includes data, photographs, and graphs (some are animated) related to sediment loading and terrace formation below the Madison slide.
Dynamics of Steady-State Drainage Basins: An Experimental Approach
This site contains animations and data of erosion on a small scale and numerical landscape erosion models. Erosion on small scale models were developed in an erosion facility that allows a miniature landscape to erode through several relief distances at constant base level fall and rainfall rates. Numerical landscape erosion animations are modified from published models with changes to numerical lattice boundaries such as stream curvatures, hillslope failure and directional diffusion. Tables and diagrams provide spatial and temporal statistics of experimental landscapes. Also available on this website are PDF versions of Les Hasbargen's publications and presentations.
Seismic Simulations Homepage: Seismic Data
This site describes an experiment at Duke University's Division of Earth and Ocean Sciences which examines how much of the rock record is retained in seismic reflection data. Experimental strata formed in a laboratory basin model simulate natural strata formation and digital images generate synthetic seismic data. These synthetic data are compared to the digital images of the experimental strata to assess the amount of stratigraphic information preserved in the modeled seismic data.
Animations of Glacial Processes
This site features four Flash animations of glacial processes. Topics include glacier basics, ice flow in a glacier, cross-section of an ice sheet, and crevasse formation. Each short animation includes captions and diagrams which define terminology and explain the processes depicted.
Seasonal Migration of Snow Cover on Mt. Ranier
This Flash animation shows the seasonal fluctuation of the snow line on Mount Rainier, Washington. A compilation of monthly images show the approximate amount of snow cover on the mountain for a full year and the image with the least amount of snow shows the position of the snow line. The animation can be paused and rewound to emphasize important points.
Life Cycle of a Glacier
This PBS NOVA site features a Flash annotated slide show that follows the journey of a single snowflake as it takes a ride through a glacier. Each captioned slides traces the evolution of freshly fallen snow on the surface of a glacier, through firn, and finally to ice. The site provides an interactive version of the slide show where users can click from slide to slide as well as a non-interactive version that shows all the slides on the same page.