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Originally Posted by PraedSt
2. Any chance you could (briefly) explain the mechanism, in layman's terms, involved with Ganymede expansion? Or at least the dominant mechanism?
Thanks
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There are many possibilities depending on who you ask. What is the mechanism that causes it's mass to remain static when it is well known that it has been hit by meteorites and accreted mass over time?
In the case of general planetary expansion I would say the following.
"The insinuation that we do not know a physical process responsible for an accelerated Earth expansion is not a scientific counter argument. The physical nature of many processes has regularly been recognized in science, long after they were first recognized as real phenomena." -- Stefan Cwojdzinski, geologist, 2005
http://www.holoscience.com/news.php?article=36uyr9nx
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Some scientists have become aware of a correlation between sunspots and Earthquakes and want to use the sunspot data to help predict earthquakes. The theory is that an intensification of the magnetic field can cause changes in the geosphere. The NASA and the European Geosciences Union have already put their stamp of approval on the sunspot hypothesis, which suggests that certain changes in the sun-earth environment affects the magnetic field of the earth that can trigger earthquakes in areas prone to it. It is not clear how such a trigger might work.
In the Journal of Scientific Exploration, Vol. 17, No. 1, pp. 37–71, 2003, there is an excellent report that addresses the more down-to-earth problems facing geophysicists trying to understand earthquakes. The paper is titled, Rocks That Crackle and Sparkle and Glow: Strange Pre-Earthquake Phenomena, by Dr. Friedemann T. Freund, a professor in the Department of Physics, San Jose State University, and a senior researcher at NASA Ames Research Center. Dr. Freund writes, "Many strange phenomena precede large earthquakes. Some of them have been reported for centuries, even millennia. The list is long and diverse: bulging of the Earth's surface, changing well water levels, ground-hugging fog, low frequency electromagnetic emission, earthquake lights from ridges and mountain tops, magnetic field anomalies up to 0.5% of the Earth's dipole field, temperature anomalies by several degrees over wide areas as seen in satellite images, changes in the plasma density of the ionosphere, and strange animal behavior. Because it seems nearly impossible to imagine that such diverse phenomena could have a common physical cause, there is great confusion and even greater controversy."
Freund outlines the basic problem, "Based on the reported laboratory results of electrical measurements, no mechanism seemed to exist that could account for the generation of those large currents in the Earth's crust, which are needed to explain the strong EM signals and magnetic anomalies that have been documented before some earthquakes. Unfortunately, when a set of observations cannot be explained within the framework of existing knowledge, the tendency is not to believe the observation. Therefore, a general malaise has taken root in the geophysical community when it comes to the many reported non-seismic and non-geodesic pre-earthquake phenomena. There seems to be no bona fide physical process by which electric currents of sufficient magnitude could be generated in crustal rocks."
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Check this out: http://science.nasa.gov/headlines/y2008/30oct_ftes.htm
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Magnetic Portals Connect Sun and Earth
Oct. 30, 2008: During the time it takes you to read this article, something will happen high overhead that until recently many scientists didn't believe in. A magnetic portal will open, linking Earth to the sun 93 million miles away. Tons of high-energy particles may flow through the opening before it closes again, around the time you reach the end of the page.
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Nope no mass there.
Le, et al, The Magnetic and Plasma Structure of Flux Transfer Events, Journal of Geophysical Research, Volume 104, Number A1, Pages 233–245, 1999
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"The most likely site for error is in the most fundamental of our beliefs." -- Samuel Warren Carey, geologist, 1988
Last edited by Total Science; 14-November-2008 at 11:54 AM..
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