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computer.
Earth Visualization Animations
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Northern and Southern Lights
For many years, it's been commonly believed that the Northern Lights
(aurora borealis) and their southern counterparts (aurora
australis) were mirror images of each other, occurring simultaneously
thousands of miles apart. But only now has this been clearly demonstrated, by scientists at NASA and the University of Iowa using the
POLAR satellite: the QuickTime movie here shows the northern and southern lights
pulsing and moving simultaneously. Caution: The Quicktime movie is large, about 2.4 Mbyte. A smaller animated GIF (326 kbyte) is also available.
Source:
POLAR mission,
Image ID: 2001_295_small_rle_99f.mov
Seasonal Changes on Earth
This 857K MPEG animation is intended to convey a sense of the cyclic
nature of the seasonal variations of vegetation, snow cover, and sea ice
on the surface of Earth. The topography has been exaggerated by a factor of
50 for clarity. The GENESIS (Global ENvironmental and Ecological Simulation of
Interactive Systems) Earth Systems Modeling Project used here is an effort to
develop a comprehensive first-generation model of Earth's climate system for use
in global change research.
Source: National Center for Atmospheric Research, Seasonal Dance Video Excerpt,
Image ID: endsd.mpg
Earth as Seen by Galileo
This 1.8-MB Quicktime movie, also available in a more extended 2.8-MB
MPEG version, shows Earth as seen by
the Galileo spacecraft shortly after its launch. The rotation of Earth and the
motion of cloud patterns on its surface are clearly visible.
Source: NASA JPL Solar System Visualization Project,
Galileo Earth Rotation Movie
Image ID: e3.mov, earth3.mpeg
Spinning Topographical Earth Map
This 540K MPEG animation shows the surface topography of Earth, both
above and below the oceans. The images are computer generated from a digital
database of oceanic bathymetry and land topography. The original data points
were spaced every 5 minutes of latitude and longitude; the images used here
were reduced in resolution while preserving important physiographic features.
Source: National Geophysical Data Center, Global Relief Data Movie,
Image ID: spinningglobe.mpg