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Originally posted by sy.gunson
Has anybody ever studied if there is a correlation between lightening activity and earthquake activity, or volcanic activity ?
Not suggesting that a single lightening strike causes anything, but I wonder if there are patterns there over time ?
This would be interesting to discover since there is a link between solar wind and lightening discharge.
Originally posted by Muaddib
Alternative theory?.... What you are calling alternative theory is being used in several fields to gather information on the conductivity of the interior of the Earth. Telluric currents are natural occurring low frequency electric currents which are induced by changes in the Earth's magnetic field. It is not "an alternative theory".
Originally posted by grover
There is a phenomena where there are lightening like flashes during earthquakes but as I recall they seem to come from the ground.
Originally posted by Essan
Originally posted by grover
There is a phenomena where there are lightening like flashes during earthquakes but as I recall they seem to come from the ground.
However, more relevant might be the theory of 'earth lights' which do appear to be a genuine phenomena and seem to often occur prior to earthquakes
www.daviddarling.info...
Originally posted by melatonin
What I'd like to see is evidence.
Excuse me for not taking what you say at face value...
Originally posted by Essan
.............
It's most certainly not mainstream meteorology and I'm willing to bet not a single professional meteorologist in the UK has ever heard of it. That's what I was referring to. You did read the whole website?
You're better off referring to scientific papers by actual scientists.
What charges the Earth?
The atmosphere is not a perfect insulator, and there is a small current between the electrosphere and the Earth. Negative charge leaks from the Earth and rises to the electrosphere. This is called the fair weather electric and it is about 2000 amperes (A) at any given moment. At this rate, the Earth's charge would dissipate in less than an hour, but, as it turns out, lightning recharges the Earth's surface by delivering negative charges back to the surface.
Originally posted by Essan
.......................
You're better off referring to scientific papers by actual scientists.
Global electrical currents
Willis L. Webb1
(1) Atmospheric Sciences Laboratory, U.S. Army Electronics Command, 88002 White Sands Missile Range, New Mexico, USA
Summary The atmospheric electrical structure of the earth is postulated to be controlled by a motivating force in the lower ionosphere which is produced by interaction between neutral atmosphere tidal circulations and the ionospheric plasma in the presence of the earth''s magnetic field. Associated electric fields power the dynamo currents through the Hall effect with a resulting development of a gross electric potential distribution in the lower ionosphere. Asymmetries in these hemispheric potential distributions result in exospheric current flows in lowL-shells and larger differences in potential produced by dynamo return current flows in high magnetic latitudes result in strong currents through highL-shells between auroral zones. Vertical thunderstorm currents with their associated lightning discharges effectively connect the earth to a low potential region of the dynamo circuit and thus supply the earth with an average negative charge which motivates a leakage tropospheric electrical circuit. In addition, the dynamo currents maintain the magnetic polar regions at different potentials with a resulting electrical exchange with the solar wind through the earth''s near space. These considerations indicate that observed electrical and variable magnetic phenomena near the earth are all part of a single comprehensive electrical current system.
Originally posted by Muaddib
What i stated is true and scientifically sound, I am not going to make it easy on you, if i am wrong then prove it.
Originally posted by melatonin
I guess that means that there isn't any evidence.
Originally posted by grover
Lets see new if I recall correctly Muaddib has at various times blamed global warming on:
An increase in solar activity
Entering an interstellar dust cloud
Leaving an interstellar dust cloud
Heat welling up from underneath the surface of the earth
I think he's now blaming thunderstorms.
Supplementary material to “Energy Transfer in the Earth-Sun System”
A. T. Y. Lui, Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland; Y. Kamide, Solar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa, Aichi, Japan
..................
There is increasing awareness on how much our daily activities can be adversely affected by space disturbances tracing all the way back to the Sun. In some of these energetic phenomena, energy in various forms can propagate long distances from the solar surface to the interplanetary medium and eventually to the Earth’s immediate space environment, namely, its magnetosphere, ionosphere, and thermosphere. In addition, transformation of energy can take place in these space disturbances, allowing charged particle energy to be transformed to electromagnetic energy or vice versa. In-depth understanding on energy transformation and transmission in the Earth-Sun system will foster the identification of physical processes responsible for space disturbances and the prediction of their occurrences and effects.
..................
Syun-Ichi Akasofu gave a special presentation on global warming using very long-term historical records to show global warming existed even prior to the start of human industrialization, suggesting that the present global warming should not be automatically attributed to the greenhouse effect. This suggestion disturbed some environmentalists in the audience. Of great interest were two poster presentations by Gerald Duma and Friedemann Freud proposing ionosphere-induced telluric currents triggering earthquakes through conductivity enhancement in rocks from activating dormant electronic charge carriers as an explanation for the association between the occurrence frequency of earthquakes and the diurnal magnetic field variations at Earth due to ionospheric Sq currents.
Originally posted by Muaddib
Are you yourself admitting there is no evidence for the rabble you present here all the time?....
Originally posted by grover
The reason why it seems that people attack you and the mods don't do anything Muaddib is probably because you deserve it...
Originally posted by Muaddib
Any metereologist who says that an electric current/telluric currents do not affect the weather that metereologist did not earn his degree.
If you need a "peer review article" to tell you that currents, in this case telluric currents affect the climate/weather of Earth, here it is.
Global electrical currents
Willis L. Webb1
(1) Atmospheric Sciences Laboratory, U.S. Army Electronics Command, 88002 White Sands Missile Range, New Mexico, USA
Summary The atmospheric electrical structure of the earth is postulated to be controlled by a motivating force in the lower ionosphere which is produced by interaction between neutral atmosphere tidal circulations and the ionospheric plasma in the presence of the earth''s magnetic field.
Originally posted by Essan
Any effect of telluric currents on weather is purely theoretical - although I concede that you are right in so far as research is being carried out in that direction.
............
Originally posted by Muaddib
Essan, there has to be an interaction between the currents that exist in the atmosphere, and the currents that exist in the Earth's surface. It is the nature of energy, or in this case electricity.
If there was no interaction between the currents that exist on Earth, telluric currents, and the currents that exist in the atmosphere there wouldn't be a fair weather.
There are a lot of theories which have been "postulated" and we know many are true, even if they are still "theories".
Originally posted by Essan
There may well be. But whether or not it has much if any effect on daily weather is another matter.
Why? And what connection is there with this 'fair weather' and real weather? (I'm asking because, frankly, I don't understand)
Originally posted by Essan
There are a lot of theories which have been postulated which some people think are true. There may be some which are true - but obviously we don't know that.
A preliminary result of a new terrain-correction analysis of the existing gravity data is that there is a strong trend in the gravity anomalies parallel to the alignment of young silicic volcanism, suggesting that there may be subsurface structures and plutonic bodies associated with the volcanism. Relatively old geomagnetic variation studies also detected parallel telluric current systems at depths shallower than 10 km, consistent with thermal phenomena (Towle, 1984)
Current and surface potential induced by stress-activated positive holes in igneous rocks
Abstract
In order to model seismo-electromagnetic phenomena, we focus on one specific defect as an alternative source of charge carriers in igneous rocks. These charge carriers are defect electrons in the O2–sublattice that are chemically equivalent to O–in a matrix of O2–and are known as positive holes (p-holes). They are activated from peroxy defects: O3X–OO–XO3(X = Si, Al etc.) that are known as positive hole pairs (PHPs). Stressed igneous rocks behave like p-type semiconductors. In order to examine the contributions of p-holes to seismo-electromagnetic phenomena, we conducted two series of uniaxial loading tests using air-dry tiles of several typesof rocks (granite, anorthosite, gabbro, limestone, and marble) and glass. We observed that the igneous rock tiles under centrally loading generated (1) a positive current, carried by holes and flowing from the central stressed volume through the surrounding unstressed volume to the edges of the tiles and (2) a negative current, carried by electrons and flowing from the central stressed volume into the load pistons.
Laboratory studies of electrical potential during rock failure
D. Eccles, , P.R. Sammonds and O.C. Clint
Mineral, Ice & Rock Physics Laboratory, Department of Earth Sciences, University College London, UK
Accepted 3 May 2005. Available online 14 July 2005.
Abstract
We have investigated electrical potential and acoustic emissions signals associated with rock deformation. Five rock types were studied; Clashach, Bentheim and Darley Dale sandstones (all quartz-rich) and a Seljadur basalt and Portland limestone (both quartz-free), both air dry and the rocks were tested in distilled water. Shallow crustal conditions were simulated in a triaxial rock deformation cell with a confining pressure simulating depth of 40 MPa, pore pressures ranging 5–35 MPa, and strain rates 10-7–10-4 s-1. Precursory electric potential signals prior to failure were observed in both saturated and dry samples of the quartz-rich sandstones, but only observed in the water saturated quartz-free rocks. Co-seismic electrical signals were obtained in all tests, providing strong evidence that two of the main sources for precursory and co-seismic signals are the piezoelectric and electrokinetic phenomena.
Lowering the strain rate resulted in an increase in the number of acoustic emissions. The pore volume changes during compaction and dilatancy remained approximately constant for all strain rates.
Streaming potential generated by fluid flow across the sample was also measured at different stages of deformation. The potential signals increased with the pore pressure gradient.