Resources For Earth Sciences and Geography Instruction


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Other Resource Links: Earth Science Animations: Volcano Animations Links
  1. LINK AA LAVA
    DESCRIPTION Eric Cohen, find an .AVI format movie showing slow moving aa lava. Whether the lava is aa or pahoehoe depends mainly on viscosity and strain rate. These two factors, in turn depend on crystallinity, dissolved gas content, temperature, bubble content, slope, eruption rate, and lava composition. See `Lava flow types` http://www-odp.tamu.edu/publications/183_SR/012/012_4.htm
  2. LINK CINDER CONE
    DESCRIPTION Freeman, this Real Player format animation shows the eruption of a cinder cone from a three dimensional perspective. The cinder cone is comprised of cinders fountaining from a central vent, is normally basaltic or andesitic in composition, and is usually less than 300 meters in height. The steepness of the slope is a function of ejecta coarseness, wind direction, and eruption height.
  3. LINK COMPOSITE VOLCANO CROSS SECTION
    DESCRIPTION Wheeling Jesuit University, find a highly simplified eruption sequence in the QuickTime format for a composite volcano. An ash fall is followed by lava deposition.
  4. LINK HAWAIIAN ISLAND FORMATION
    DESCRIPTION Freeman, this Flash animation recounts the formation of the Hawaiian Island chain. The Islands` formation is linked to a hot spot beneath the Pacific Plate and the plate`s on going movement to the northwest and west. To access the animation, click on chapter 6, then the `volcanism` link in the animations section.
  5. LINK HOT SPOT FORMATION
    DESCRIPTION McGraw Hill, though less sophisticated than the Freeman link on hot spots, this Flash animation shows the formation of fringing reefs around the island and the eventual formation of an atoll. To access the animation click on the `Hot Spots and Aseismic Ridge` link.
  6. LINK LAVA AT THE OCEAN
    DESCRIPTION Eric Cohen, this AVI video shows the continued growth of Hawaii.
  7. LINK LAVA FLOWS
    DESCRIPTION Exploring Earth, discover four different Flash movies showing lava flows, including lava fountains, lava `waterfalls,` very fluid and quick moving lava, and slow moving lava forming aa type basalt.
  8. LINK MT KILAUEA LAVA FLOW
    DESCRIPTION a QuickTime animation depicts the Kamoamoa lava flow of 1995 on Mt. Kilauea in Hawaii. Note the relatively gentle slope and slow rate of lava movement of this shield volcano. At other times, the lava can be quite fluid and can move at quite rapid rates.
  9. LINK MT ST HELENS DOME ANIMATION
    DESCRIPTION See a time lapse overhead view of the growth of the (new) Mt. St. Helens lava dome. It seems to be growing at the rate of 2 m3/second, and viewing this video makes that seem possible.
  10. LINK MT ST. HELENS VIDEO FOOTAGE
    DESCRIPTION this Real Media format movie shows actual footage of the blast sequence. The video begins with pictures of how Mt. St. Helens looked before the eruption, then shows the eruption itself.
  11. LINK MT. ST. HELENS ERUPTION
    DESCRIPTION McGraw Hill, a Flash animation recounting the factors responsible for the Mount St. Helens eruption. After a landslide and pyroclastic flow there were blasts at the summit and flank of the volcano. It would be helpful if the animation could be replayed easily to recount each of the steps preceding the eruption.
  12. LINK PAHOEHOE LAVA
    DESCRIPTION Eric Cohen, this .AVI video shows pahoehoe lava. Whether the lava is aa or pahoehoe depends mainly on viscosity and strain rate. These two factors, in turn depend on crystallinity, dissolved gas content, temperature, bubble content, slope, eruption rate, and lava composition. See `Lava flow types` http://www-odp.tamu.edu/publications/183_SR/012/012_4.htm
  13. LINK PYROCLASTIC CLOSEUP
    DESCRIPTION Savage Earth, the third frame in this Flash animation is helpful in showing how a pyroclastic flow particles becomes differentiated with heavier particles sinking and the lighter particles and gases displaced upwards. Pyroclastic flows can travel at speeds exceeding 100 miles per hour and can be over 1000 degrees F. Over the years, these dangerous flows have killed thousands.
  14. LINK PYROCLASTIC FLOW MOVIE
    DESCRIPTION National Geographic, this QuickTime movie displays the pyroclastic flow on Mt. Unzen, Japan that killed 41 in 1991, including famous volcanologists and photographers Maurice & Katia Krafft.
  15. LINK VISCOSITY
    DESCRIPTION Discover Earth, In this Flash animation, “Experiment with viscosity by changing the viscosity (located to the side of each beaker), then select Start and watch as the sphere falls to the bottom of the beakers.” Spheres can be reset to the top of each beaker by clicking the Reset button.” Choose between water, canola oil, motor oil and different chemical compositions of lava.
  16. LINK Volcano Movies
    DESCRIPTION Eric Cohen, find a variety of mpeg, avi, quicktime, and flash movies showing all sorts of volcanic phenomena.
   

 

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