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
Resources for Earth Science and Geography Instruction
This website contains links to sites featuring maps, images and other topics related to an introductory earth science or physical geography class. Links are also available for environmental science, earth science/geography education, career opportunities, and more. The sites selected are based on image quality, ease with which lesson plans can be developed, organization, authenticity, scope, and format.
NASA's Hurricane Resource Page
NASA's Hurricane Resource Page provides a wide variety of information regarding recent and historic hurricanes. A collection of links feature information including the latest images and animations from recent hurricanes, in depth web pages about hurricanes in 2005, educational tools and products, hurricane topics and the latest hurricane news. This webpage is a very useful resource for anyone looking for information on current and recent hurricanes.
Estimating Hurricane-Force Winds
This resource provides an abstract: To better measure hurricane-force winds, the authors studied various types of synthetic aperture radar (SAR) wind retrieval schemes applied to the high winds observed in 2004 during Hurricane Ivan. They found that the newly-developed Cmod5 empirical geophysical model function (GMF) outperforms the commonly used Cmod4 GMF in analyzing these high winds. They suggest that continued analysis of SAR wind mapping under extreme wind conditions can be a useful tool for hurricane tracking and prediction.
Listening to the 2004 Indian Ocean tsunami quake
This resource is an abstract. This study tracks the movement of the rupture that caused the December 26, 2004 Indian Ocean tsunami by comparing recordings of sound waves from five sensors located around the Indian Ocean. The data were used to triangulate the location of sound wave source. Results indicated that the rupture first moved northwest at 2.4 kilometers per second along the Sunda trench then slowed to 1.5 kilometers per second around 600 kilometers from the earthquake's epicenter. The author indicates that the slower speed of the rupture was unusual for an earthquake caused by a rupture close to the surface.
Tsunami "shadows" may allow remote detection of tidal waves
This resource provides an abstract. This study investigates tsunami shadows, extended dark strips on the ocean surface before a tsunami. Such shadows are found to result from an air-sea interaction induced by tsunami-related atmospheric disturbances. Results suggest that remote surface water observations can be used to detect deep ocean tsunamis via their shadows and thus provide significantly more reliable and earlier warning before the large waves strike vulnerable shores.
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.
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.