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Search results for: geophysic* in all categories

637 results found.

64 pages of results.
231. The Moon and Its Rilles (2) [Thunderbolts Website]
... Significantly, well-qualified specialists acknowledged the definitive failure of the common theory more than thirty-five years ago. In 1970, University of Pittsburgh scientists Bruce Hapke and Benn Greenspan, based on Lunar-Orbiter photographs showing strings of craters along the floors of lunar rilles, acknowledged that such craters could not all be impact craters and must have something to do with the formation of the rilles. The direct evidence thus contradicts “those hypotheses for the origin of sinuous rilles by simple down-cutting by a moving fluid." (Report published in EOS Transactions, American Geophysical Union (51), 1970 One explanation of Hadley and other lunar rilles has yet to be considered by planetary scientists. It is the one explanation that does not produce contradictions, or conflict in any way with what we see on the moon. Engineer Ralph Juergens, who investigated a new approach to sinuous rilles, suggested in 1974 that they are the effects of “electrical discharge”. Juergens ’ work, in turn, helped to inspire the lifelong explorations of today ’ s leading electrical theorist, Wallace Thornhill, who ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  18k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/060317rille.html
232. A, B, C, D, Electric Solar System [Thunderbolts Website]
... been making the case in these pages that the "volcanic"plumes on Jupiter's moon Io are plasma discharge arcs from the moon's electrical transactions with the gas giant. In recent years a growing number of scientists have acknowledged the electrical exchange between the two bodies, as confirmed by Io's" footprint" in the Jovian aurora above. But now a new study reports that one of the bright spots in this aurora is the footprint of a continuous electrical exchange between Jupiter and another moon, Europa. In October of 2005, the journal Geophysical Research Letters published a report from a research team headed by Denis Grodent of the University of Liège, Belgium, noting the team's discovery of a short auroral tail linking Jupiter to Europa. The report notes that this footprint is similar to that of Io, but less energetic. Grodent's team based its report on a study of 45 Hubble images of the Jovian aurora showing Europa's footprint and its swirling "tail". In previous attempts to explain the electrical connection of Io to Jupiter, astronomers suggested that Jupiter's tidal influence on Io ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  16k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/060512chargedplanets.html
... From: Kronos Vol. VI No. 4 (Summer 1981) Home¦ Issue Contents Corrigenda et Addenda... The figure on page 46 of KRONOS VI:3 was adapted from P. J. Smith, "The Intensity of the Ancient Geomagnetic Field," Geophysical Journal 12 (1967), p. 343. Sources for the names listed in the above figure are: Thellier, E.& Thellier, O.,1959. Sur l'intensite du champ magnetique terrestre dans le passe historique et géologique, Annls Geophys., 15, 285. (This review paper contains full references to the Thelliers' individual papers.) Burlatskaya, S. P.,1962. The ancient magnetic field of the Earth, Izv. Akad. Nauk SSSR, p. 254. Sasajima, S.& Maenaka, K., 1964. Intensity Studies of the Geomagnetic Field for the Past 2000 Years in West Japan, p. 44. 1964 Progress Report of the Rock Magnetism Group in Japan, Tokyo. Nagata, T., ...
Terms matched: 1  -  Score: 15  -  05 Mar 2003  -  2k  -  URL: http://www.catastrophism.com/online/pubs/journals/kronos/vol0604/096corri.htm
234. The Baffling Martian Spiders (3) [Thunderbolts Website]
... 3) The remarkable Martian formations called“ spiders” occur only at the planet ’ s south polar region. But some observers distinguish between those spiders which appear as permanent features of the surface, and those which seem to emerge and disappear seasonally. A groundbreaking study by C.M. Orme and P.K. Ness, published in the February 8, 2002 issue of the Journal of the British Interplanetary Society, examines the spiders in detail. (The authors titled their study "Spider Ravine Models and Plant Like Features on Mars — Possible Geophysical and Biogeophysical Modes of Origins.") A subsequent study by Orme and Ness, developed in consultation with renowned science fiction writer Arthur C. Clark (available at New Frontiers ), concentrated on the enigma of the changing spiders, suggesting that the comings and goings of active variants constitute one of the most profound mysteries ever presented to planetary scientists. Though the authors do not assert a final position on the subject, their lines of reasoning imply that a biological origin may be the only explanation not excluded by the visual evidence ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  15k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/060728spiders3.html
235. The Mystery of Chicxulub Crater [Thunderbolts Website]
... conclude that they must have been waders to offset their great weight. Whatever happened to the dinosaurs was far more than a puny asteroid impact could inflict. Nothing was the same on Earth after a global alteration of Earth ’ s gravity. The triumph of the impact model was not so much because of its adequacy in explaining the evidence as it was a default result: Only impact and volcanic explanations were considered, and the spherules and shocked quartz clearly ruled out volcanism. "We know so little about impacts," says theoretical geophysicist Jay Melosh of the University of Arizona. But an electrical mechanism was never considered because astronomers assure geologists that the planets have always been on their present orbits and in space electrical events never happen. home updates news and views picture of the day resources team a role for you contact us EXECUTIVE EDITORS: David Talbott, Wallace Thornhill MANAGING EDITOR: David Talbott CONTRIBUTING EDITORS: Mel Acheson, Michael Armstrong, Dwardu Cardona, Ev Cochrane, C.J. Ransom, Don Scott, Rens van der Sluijs, Ian Tresman WEBMASTER: Brian ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  17k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/060919chicxulub.html
236. Discovering the Magnetosphere [Thunderbolts Website]
... of the day resources team a role for you contact us picture of the day archive subject index subject abstracts Credit: Courtesy JPL, NASA Oct 13, 2006 Discovering the Magnetosphere The discovery of the two Van Allen Radiation Belts could be called the first surprise of the space age. But scientists might not have been surprised had they paid attention to the experiments of plasma scientist Kristian Birkeland. In a basement lab of the physics department at the University of Iowa, James Van Allen designed Explorer 1, a scientific satellite for the International Geophysical Year (IGY) of 1957-1958. The satellite carried only a single instrument, a small Geiger counter to record energetic particles. The instrument was designed to measure cosmic rays, highly energetic ions (positively charged particles) of unknown origin arriving from distant space. Strangely, though the experiment detected many particles at low altitudes, at the top of the orbit it counted no particles at all, The explanation for this odd behavior was discovered two months later by Explorer 3. This new satellite included a tape to record data continuously ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  12k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/061013magnetosphere.html
237. Tektites [Thunderbolts Website]
... , most specialists do not agree whether “Libyan Desert glass”, though enigmatic, should be classified as a “tektite”. Charles Darwin popularized the idea that tektites are volcanic, but this idea was later discredited. Some scientists have also suggested that large comets may have sprayed the earth with these odd stones. As the space age arrived, attention shifted to the moon. In the 1960s, Dean Chapman and Howard Larson prepared a number of scientific papers on tektites, suggesting a lunar source. In 1963 the Journal of Geophysical Research published their paper "On the Lunar Origin of Tektites”. Chapman believed that, as large meteors struck the lunar surface, some of the material excavated by the impact escaped to space. He observed that some tektites, most notably those from Australia, show signs of “aerodynamic ablation”, a sculpting by passage through the Earth ’ s atmosphere at extremely high speeds, he believed. The picture above (top) shows three views of a specimen created experimentally by Chapman in Ames Research Center ’ s arc-jet facility ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  18k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/061024tektites.html
238. A, B, C, D, Electric Solar System [Thunderbolts Website]
... been making the case in these pages that the "volcanic"plumes on Jupiter's moon Io are plasma discharge arcs from the moon's electrical transactions with the gas giant. In recent years a growing number of scientists have acknowledged the electrical exchange between the two bodies, as confirmed by Io's" footprint" in the Jovian aurora above. But now a new study reports that one of the bright spots in this aurora is the footprint of a continuous electrical exchange between Jupiter and another moon, Europa. In October of 2005, the journal Geophysical Research Letters published a report from a research team headed by Denis Grodent of the University of Liège, Belgium, noting the team's discovery of a short auroral tail linking Jupiter to Europa. The report notes that this footprint is similar to that of Io, but less energetic. Grodent's team based its report on a study of 45 Hubble images of the Jovian aurora showing Europa's footprint and its swirling "tail". In previous attempts to explain the electrical connection of Io to Jupiter, astronomers suggested that Jupiter's tidal influence on Io ...
Terms matched: 1  -  Score: 15  -  29 Nov 2006  -  18k  -  URL: http://www.thunderbolts.info/tpod/2006/arch06/061123abcd.html
239. news and views [Thunderbolts Website]
... of the theories is that meteorites hit the rings and create a cloud of charged plasma, which then charges up the rings' dust particles. Jones says this cannot be the case as the spokes build up gradually and several meteorites cannot be expected to strike the rings at the same time and at the same place. He says thunderstorms could be the case as thunderstorms on Earth are found to generate electron beams. Saturn is known to experience thunderstorms. The details of the possibilities propounded by Jones and his team appear in the journal Geophysical Research. Original article here____ From our TPOD Saturn's Spokes: The Electric Universe may explain this mystery. The spokes are caused by radial discharges from Saturn¹s magnetosphere into the planet¹s ionosphere. Such low-latitude discharges are observed in the laboratory when a magnetized sphere is immersed in an electrified plasma. In Saturn¹s case, the rings provide a more easily ionized, "dusty" plasma that would tend to concentrate the discharges in the plane of the rings. The effect on the ring particles is to temporarily alter their polarization ...
Terms matched: 1  -  Score: 15  -  12 Jan 2007  -  9k  -  URL: http://www.thunderbolts.info/webnews/120706saturn_spokes.html
240. news and views [Thunderbolts Website]
... billion years ago, material moved from the innermost part to the outermost part. I think of it as the solar system partially turning itself inside out," said Brownlee, the lead author among 183 on the primary paper detailing the first research results from the Stardust mission, published in the Dec. 15 edition of the journal Science. Brownlee is a coauthor of the other six papers on Stardust results being published in Science, which also are the subject of a news conference and scientific presentations at the fall meeting of the American Geophysical Union in San Francisco. The National Aeronautics and Space Administration's Stardust mission was launched in February 1999 and met comet Wild 2 (pronounced Vilt) beyond the orbit of Mars in January 2004. The comet formed more than 4.5 billion years ago and had remained preserved in the frozen reaches of the outer solar system until 1974 when a close encounter with Jupiter shifted the comet's orbit to a path between Mars and Jupiter. After a 2.88 billion-mile journey, Stardust returned to Earth last January with a payload of thousands of tiny particles from ...
Terms matched: 1  -  Score: 15  -  12 Jan 2007  -  14k  -  URL: http://www.thunderbolts.info/webnews/122006stardust.html
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