Introduction & Real-Time Ionospheric TEC (Total Electron Content) Disturbance

reply to post by DriftingAway


So,a lower TEC is ,or maybe causing earthquakes.
Versus a higher TEC?
Interesting

Here is something to read over and ponder

Abstract. In this paper we examine pre-earthquake ionospheric anomalies by the total electron content (TEC) derived from a ground-based receiver of the Global Positioning System (GPS). A 15-day running median of the TEC and the associated inter-quartile range (IQR) are utilized as a reference for identifying abnormal signals during all of the 20M≥6.0 earthquakes in the Taiwan area from September 1999 to December 2002. Results show that the pre-earthquake ionospheric anomalies appear during 18:00–22:00LT (LT=UT+8h) within 5 days prior to 16 of the 20M≥6.0 earthquakes. This success rate of 80% (=16/20%) suggests that the GPS TEC is useful to register pre-earthquake ionospheric anomalies appearing before large earthquakes.

www.ann-geophys.net...

Full article here.


www.ann-geophys.net...

reply to post by kdog1982

You may be mixing up cause and effect. There is evidence that there may be geomagnetic precursors to earthquakes but those precursors are very difficult to detect. They are not anything that could cause earthquakes. One theory is that the stress around the fault zone that precedes an earthquake causes piezoelectric effects which the ionosphere reacts to.
www.earth-prints.org...

The hope is that they may someday be used to reliably predict earthquakes.

Originally posted by Phage
reply to post by kdog1982

 

You may be mixing up cause and effect. There is evidence that there may be geomagnetic precursors to earthquakes but those precursors are very difficult to detect. They are not anything that could cause earthquakes. One theory is that the stress around the fault zone that precedes an earthquake causes piezoelectric effects which the ionosphere reacts to.
www.earth-prints.org...

The hope is that they may someday be used to reliably predict earthquakes.

I have been looking into that.
Everyone screams HAARP is causing earthquakes,while I think HAARP maybe able to predict earthquakes,but on very short notice.

There is some intriguing research about whether large earthquakes are associated with ionospheric changes caused by electromagnetic signals released by the crushing of rock crystalline structures. If so, then this might be a mechanism for major earthquake prediction.

According to Freund, "Earthquake forecasters can also watch for changes in the ionosphere by monitoring very-low-frequency (3- to 30-kilohertz) and high-frequency (3- to 30-megahertz) radio transmissions. The strength of a radio signal at a receiver station changes with the diurnal cycle: it is greater at night than in daylight... The altitude of the ionosphere, which moves lower as the positive holes [positively-charged atoms in stressed rock] migrate to the surface, also has an effect on radio signals; the lower the ionosphere, the stronger the signals. So at dawn on an earthquake day, a curve drawn to represent the drop-off in radio signal strength will appear markedly different from the normal curve for that signal at that location." (Earthquake Predictor) That is, Fruend believes that the dawn-dusk signatures will be different for a particular instrument, perhaps even the signal strength as monitored during the day, on the day of a major earthquake.

solar-center.stanford.edu...

Some really thought provoking studies here also.......................................................

solar-center.stanford.edu...

reply to post by DriftingAway


Looks like the idea your earlier post on piezo-electricity could be creating these changes in TEC is catching on.

From my understanding of piezo electrical generation, from acceleration transducers, is that crystals give of an AC current when they move, the higher the acceleration of the movement, the more charge they give off.

This would correlate well with plate movement generating voltage that could effect the Ionosphere. I don't see how Ions would float up into the ionosphere to create these TEC disturbances, but I could see the changing charge of the Earths surface creating changes in charge in our upper atmosphere. Basically, the Earths surface would be sending off a low frequency signal, which disturbs the Ionosphere.