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Search results for: geophysic* in all categories
447 results found.
45 pages of results. 331. Water [Books] [de Grazia books]
... a rock, and therefore a measure of the water or gas contained in the rock at the time of its emergence from a molten state. Its porosity ranges from 0.3 to 1.5 %. That granite could not be generated from the deeper basalts of the mantle is argued by Y.N . Lyustikh, a soviet geophysicist; four times the present water mass of the earth would be needed for the job.[2 ] Nor can the process by imagined. The crystalline, glassy, volcanic basalt, which lines the ocean floors, can have a porosity of anywhere from 1% to 30%. Generally the porosity declines with the depth of the ...
332. Recent Developments in Near Eastern Archaeology [Journals] [SIS Review]
... not match the neighbouring GRIP (GReenland Ice Core Project) core. Both GRIP and GISP2 cores are in the central Greenland summit region and only about 30km apart. The GISP2 volcanic record was published by Zielinski in Science 264 (13th May 1994) pp. 948-952 and the GRIP volcanic record by Clausen, Hammer et al in Journal of Geophysical Research 102, No. C12 (Nov. 30 1997) pp. 26707-23. On pp. 26713-4 the difference between the GRIP and GISP2 cores in the second millennium BC is noted and it is implied that GISP2 may be wrong. At present it seems that we can not rely on anything from ice-cores in the BC period but ...
333. Precursors of Quantavolution [Books] [de Grazia books]
... , he would have been able to use the legendary material about which he may have known. V. had found in legend brief evidence that the Moon was young in the sky. He published it in 1973, claiming that the Moon had been captured, a Hoerbiger idea, and showing no awareness of the large quantity of legendary and geophysical evidence that H.S . Bellamy had brought to bear on the capture theory in several books, especially in Moon, Myths, and Man (1936). The main reason why V. dismissed the fission-eruption hypothesis was saying that such a catastrophe would have been too destructive: "since human beings already peopled the Earth, it ...
334. Monitor [Journals] [SIS Review]
... area changed from being well-vegetated to scant vegetation and in Europe conifers were replaced by primitive lycopods which could only live in wet places. Whereas plants recovered by 100,000 years after the Cretaceous catastrophe, it took 5 Myrs for recovery after the Permian wipe-out. An extra-terrestrial cause' for the formation of the Siberian traps is suggested by French geophysicists. The gravitational pull of the Sun and the Moon may have combined with the wobble of the Earth's spinning core to produce frictional heating at the base of the mantle causing massive plumes of hot rock to rise to the surface in what is now Siberia. On the other hand, a huge impact crater has recently been recognised on Australia's ...
335. Monitor [Journals] [SIS Review]
... as believed by T. Gold, whose ideas we reported years ago. Earth a Failed Star? Science Frontiers No. 143, Sept. -Oct. 2002, p. 3 Most of Earth's internal heat is supposed to be left from its formation, with a little from radioactive decay in the mantle, but a researcher suggests several geophysical puzzles might be better explained if its core contains a natural fission reactor. Several other planets and moons are exothermic (cf. Jupiter - a Star? ') . No one has suggested electrical heating. Chaotic Climate New Scientist, 2.2 .02, p. 18, 1.6 .02, p. 6 ...
336. Recent Developments In Near Eastern Archaeology [Journals] [SIS Review]
... , 2003, pp.87-94 (it had already received a brief mention in the first SCIEM conference report). However, Hammer et al. had got their statistics wrong and the chemical analysis actually showed that the ice core tephra was definitely not compatible with Theran ash. This was proved by Keenan in a new internet journal Geochemistry, Geophysics, Geosystems (abbreviated to G3), Vol.4 , No.11 (2003). Additionally, in the same journal, another group attempted to show that the ash was actually from a different second millennium BC eruption, that of an Alaskan volcano named Aniakchak (G3 Vol.5 , No.3 [2004] ...
337. Recent Developments in Near Eastern Archaeology [Journals] [SIS Review]
... have been refuted in articles by Pearce et. al and by Keenan (p . 325). Keenan's paper was apparently mentioned reluctantly, as it was referenced incompletely! The full reference should be: Keenan, D. J. (2003), Volcanic ash retrieved from the GRIP ice core is not from Thera', Geochemistry, Geophysics, Geosystems, Vol. 4, No. 11, 1097, doi: 10.1029/2003GC000608 (it is obtainable via the internet). It is well known that the carbon date for the eruption gives a very wide range when calibrated (although, as I pointed out in the last issue, not wide enough to ...
338. News from the Internet [Journals] [SIS Review]
... secondary currents flowing in the Earth. The electric field drives harmful "geomagnetically induced currents" (GIC) in technological systems with a possibility of large economic losses. The first observations of space weather effects on technological systems were already made in early telegraph equipment 150 years ago. Theoretical modelling of GIC in a technological system firstly requires a "geophysical" calculation of the electric field at the Earth's surface and secondly an "engineering" computation of GIC in the particular earthed network of conductors. In this paper, we summarize the basic principles associated with GIC and consider the research done on the topic in Finland for almost twenty-five years. Title: On the global electrostatic charge of stars ...
339. Scientific Dating Methods In Ruins [Journals] [Velikovskian]
... from a few microns to nearly zero, and it is often difficult to decide whether one should be counted or not. Under these circumstances, it is notorious that total counts come out at what the investigators think they should be. The subjectiveness of such counts is highlighted by a report by R. G. Hipkin, an Edinburgh University geophysicist, that he counted 253 ridges and later 359 ridges in a repeat count of the same specimen. (29) In order to remove all doubt about the validity of radiocarbon dating, Stiebing informs us that rejection of radiocarbon dating also means rejection of dendrochronology (tree ring dating), one of the most accurate dating methods yet developed ...
340. The Devil's Advocate [Books] [de Grazia books]
... be aware that even if all the conventional dates of all the events that you compress are incorrect by many millions of years, they will still not fall within your few thousand years. It would be a miraculous coincidence if half-a-dozen radioactive tests of time were all wrong, totally wrong. It is hard to conceive how hundreds of geologists and geophysicists working upon these tests have not to any degree acquired your suspicions, and you must admit that you have not yourself performed any of the tests, which require extensive laboratory facilities. Even if all radioactive tests were wrong you would have to grant the unanimity of opinion in respect to the older methods which you have listed in the first ...
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