Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Shoemaker Levy 9 Impact Plumes On Jupiter Implications For Threat To Satellites In Low Earth Orbit
Download The Shoemaker Levy 9 Impact Plumes On Jupiter Implications For Threat To Satellites In Low Earth Orbit full books in PDF, epub, and Kindle. Read online The Shoemaker Levy 9 Impact Plumes On Jupiter Implications For Threat To Satellites In Low Earth Orbit ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Shoemaker-Levy 9 Impact Plumes on Jupiter by :
Download or read book The Shoemaker-Levy 9 Impact Plumes on Jupiter written by and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational simulations of the impacts of comet Shoemaker-Levy 9 (SL9) fragments on Jupiter have provided a framework for interpreting the observations. A reasonably consistent picture has emerged, along with a more detailed understanding of atmospheric collisional processes. Several aspects of Earth-impact hazards can be re-evaluated with knowledge gained from observations and from simulations of SL9. In particular, the threat of impact-generated plumes to satellites in low-Earth orbit (LEO) should be recognized. Preliminary 2-D computational simulations suggest that impacts of a size that recur about once per century generate plumes that rise to nearly 1000 kilometers over an area thousands of kilometers in diameter. Detailed modeling of such plumes should be carried out to quantify this threat to satellites in the near-Earth environment. Careful observations of high-energy atmospheric entry events should be made using both satellite and ground-based instruments to provide validation for these computational models.
Book Synopsis The Role of Impact Processes in the Geological and Biological Evolution of Planet Earth by : Katica Drobne
Download or read book The Role of Impact Processes in the Geological and Biological Evolution of Planet Earth written by Katica Drobne and published by Založba ZRC. This book was released on 1996-01-01 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mednarodna delavnica je obravnavala geološke in biološke posledice katastrofalnih trkov z meteoriti v zgodovini Zemlje od paleozoika do danes. Posebna pozornost je bila posvečena dogodkom na kredno-terciarni meji. Zbornik je razdeljen na tri dele. V prvem delu je 52 povzetkov predavanj in prostorov. Drugi del prinaša pet preglednih člankov o geološki zgradbi zahodne Slovenije in Tržaškega Krasa ter seznam geoloških publikacij in geoloških kart Slovenije, Hrvaške in italijanskega Krasa. Tretji del je vodnik po ekskurzijah. Opisanih je šest profilov, na katerih so odkrite zgornjekredne in najstarejše terciarne plasti.
Book Synopsis Impact Plumes Generated by the Shoemaker-Levy 9 Comet Crash Into Jupiter by : Jennifer Rae Mills
Download or read book Impact Plumes Generated by the Shoemaker-Levy 9 Comet Crash Into Jupiter written by Jennifer Rae Mills and published by . This book was released on 1996 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shock Compression of Condensed Matter--1995 by : S. C. Schmidt
Download or read book Shock Compression of Condensed Matter--1995 written by S. C. Schmidt and published by . This book was released on 1996 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shoemaker-Levy 9 Impact on Jupiter by : Michael Francis A'Hearn
Download or read book Shoemaker-Levy 9 Impact on Jupiter written by Michael Francis A'Hearn and published by . This book was released on 1994 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Showmaker-Levy 9 and Plume-forming Collisions on Earth by :
Download or read book Showmaker-Levy 9 and Plume-forming Collisions on Earth written by and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational models for the July, 1994 collision of comet Shoemaker-Levy 9 with Jupiter have provided a framework for interpreting the observational data. Imaging, photometry, and spectroscopy data from ground-based, Hubble Space Telescope, and Galileo spacecraft instruments are consistent with phenomena that were dominated by the generation of incandescent fireballs that were ballistically ejected to high altitudes, where they formed plumes that subsequently collapsed over large areas of Jupiter's atmosphere. Applications of similar computational models to collisions into Earth's atmosphere show that a very similar sequence of events should take place for NEO impacts with energies as low as 3 megatons, recurring on 100 year timescales or less. This result suggests that the 1908 Tunguska event was a plume-forming atmospheric explosion, and that some of the phenomena associated with it might be related to the ejection and collapse of a high plume. Hazards associated with plume growth and collapse should be included in the evaluation of the impact threat to Earth, and opportunities should be sought for observational validation of atmospheric impact models by exploiting data already being collected from the natural flux of multi-kiloton to megaton sized objects that constantly enter Earth's atmosphere on annual to decadal timescales.
Download or read book Impact! written by Gerrit L. Verschuur and published by Oxford University Press. This book was released on 1997-12-18 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most scientists now agree that some sixty-five million years ago, an immense comet slammed into the Yucatan, detonating a blast twenty million times more powerful than the largest hydrogen bomb, punching a hole ten miles deep in the earth. Trillions of tons of rock were vaporized and launched into the atmosphere. For a thousand miles in all directions, vegetation burst into flames. There were tremendous blast waves, searing winds, showers of molten matter from the sky, earthquakes, and a terrible darkness that cut out sunlight for a year, enveloping the planet in freezing cold. Thousands of species of plants and animals were obliterated, including the dinosaurs, some of which may have become extinct in a matter of hours. In Impact, Gerrit L. Verschuur offers an eye-opening look at such catastrophic collisions with our planet. Perhaps more important, he paints an unsettling portrait of the possibility of new collisions with earth, exploring potential threats to our planet and describing what scientists are doing right now to prepare for this awful possibility. Every day something from space hits our planet, Verschuur reveals. In fact, about 10,000 tons of space debris fall to earth every year, mostly in meteoric form. The author recounts spectacular recent sightings, such as over Allende, Mexico, in 1969, when a fireball showered the region with four tons of fragments, and the twenty-six pound meteor that went through the trunk of a red Chevy Malibu in Peekskill, New York, in 1992 (the meteor was subsequently sold for $69,000 and the car itself fetched $10,000). But meteors are not the greatest threat to life on earth, the author points out. The major threats are asteroids and comets. The reader discovers that astronomers have located some 350 NEAs ("Near Earth Asteroids"), objects whose orbits cross the orbit of the earth, the largest of which are 1627 Ivar (6 kilometers wide) and 1580 Betula (8 kilometers). Indeed, we learn that in 1989, a bus-sized asteroid called Asclepius missed our planet by 650,000 kilometers (a mere six hours), and that in 1994 a sixty-foot object passed within 180,000 kilometers, half the distance to the moon. Comets, of course, are even more deadly. Verschuur provides a gripping description of the small comet that exploded in the atmosphere above the Tunguska River valley in Siberia, in 1908, in a blinding flash visible for several thousand miles (every tree within sixty miles of ground zero was flattened). He discusses Comet Swift-Tuttle--"the most dangerous object in the solar system"--a comet far larger than the one that killed off the dinosaurs, due to pass through earth's orbit in the year 2126. And he recounts the collision of Comet Shoemaker-Levy 9 with Jupiter in 1994, as some twenty cometary fragments struck the giant planet over the course of several days, casting titanic plumes out into space (when Fragment G hit, it outshone the planet on the infrared band, and left a dark area at the impact site larger than the Great Red Spot). In addition, the author describes the efforts of Spacewatch and other groups to locate NEAs, and evaluates the idea that comet and asteroid impacts have been an underrated factor in the evolution of life on earth. Astronomer Herbert Howe observed in 1897: "While there are not definite data to reason from, it is believed that an encounter with the nucleus of one of the largest comets is not to be desired." As Verschuur shows in Impact, we now have substantial data with which to support Howe's tongue-in-cheek remark. Whether discussing monumental tsunamis or the innumerable comets in the Solar System, this book will enthrall anyone curious about outer space, remarkable natural phenomenon, or the future of the planet earth.
Book Synopsis A Model of Meteoroid Atmospheric Entry with Implications for the Neo Hazard and the Impact of Comet Shoemaker-levy 9 on Jupiter by :
Download or read book A Model of Meteoroid Atmospheric Entry with Implications for the Neo Hazard and the Impact of Comet Shoemaker-levy 9 on Jupiter written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shoemaker-Levy 9/Jupiter Impact WWW Center by :
Download or read book Shoemaker-Levy 9/Jupiter Impact WWW Center written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on the Shoemaker-Levy 9/Jupiter comet from the University of Florida's Astronomy Department in Gainesville, Florida. Includes a fact file, the latest predictions for impact times, comet ephemeris for Shoemaker-Levy 9, storm predictions for radio observers, and information on observing Jupiter in the radio regime.
Book Synopsis Shoemaker Levy 9 (SL9) Impact Images by :
Download or read book Shoemaker Levy 9 (SL9) Impact Images written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Jeff Foust provides access to images of the impact of comet Shoemaker Levy 9 (SL9) with Jupiter on July 16-22, 1994. Foust notes the source of each image and includes a description.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Model of Meteoroid Atmospheric Entry with Implications for the Neohazard and the Impact of Comet Shoemaker-Levy 9 on Jupiter by :
Download or read book A Model of Meteoroid Atmospheric Entry with Implications for the Neohazard and the Impact of Comet Shoemaker-Levy 9 on Jupiter written by and published by . This book was released on 1996 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new semianalytical model describing the entry and deformation of meteoroids entering planetary atmospheres has been developed and calibrated against numerical simulations performed using the CTH shock-physics computational hydrocode. The model starts with the classical treatment of meteoroid ablation which is modified to include an explicit treatment of energy conservation during the ablative process. This is reconciled with terrestrial observations by modeling the formation of a vapor/debris layer (the visible bolide) surrounding the central meteoroid. A mechanical deformation model based on long-wavelength hydrodynamic instability growth is added and calibrated against numerical simulations performed with CTH. The analytical model provides initial conditions for numerical fireball simulations which are compared with observations of the Comet Shoemaker-Levy 9 impact on Jupiter and can be used to assess the terrestrial impact hazard.
Book Synopsis Re-entry and ablation of cometary dust in the impact plumes of Shoemaker-Levy 9 by : Alan Fitzsimmons
Download or read book Re-entry and ablation of cometary dust in the impact plumes of Shoemaker-Levy 9 written by Alan Fitzsimmons and published by . This book was released on 1996 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Jupiter's Atmospheric Response to the Impact of Comet Shoemaker-levy Nine by : C. Tim Rich
Download or read book Modeling Jupiter's Atmospheric Response to the Impact of Comet Shoemaker-levy Nine written by C. Tim Rich and published by . This book was released on 1999 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact-generated Atmospheric Plumes: Observations on Jupiter and Implications for Earth by :
Download or read book Impact-generated Atmospheric Plumes: Observations on Jupiter and Implications for Earth written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: