Is It Changing?
At present there is a rather confused set of ideas being circulated on the changing of the so called Schumann Resonance, and its relation to the long awaited Earth changes. I would like here to present some simple images that will hopefully help to clear this issue up, and lead to a more balanced consideration of this phenomenon.
The statement has been made that "the Schumann Resonance (SR) is rising, and is approaching 13 Hz, from it's "normal" frequency of just shy of 8 Hz." Let's take this statement apart a bit. Just what is the Schumann Resonance?
It is known that all electromagnetic radiations which we measure in our local space travel very close to c, the speed of light, or 3*10^8 m/sec. Also, electromagnetic waves will bounce and reflect off of conductive surfaces, and this is how long distances are traversed by radio waves. Surrounding the Earth, there is a multi-layered complex of charged particles called the ionosphere, which acts as a reflector for low frequency radio signals. The conductivity of the ionosphere is constantly changing in response to the effects of the sun and its various outputs of flares, sunspots, and waves of many frequencies.
At very low frequencies, there is a greater conductivity of the Earth itself, and so a tendency for some radio signals, called ground waves, to follow the Earth, or even go through the Earth, which is useful for submarine communication. This creates a situation where there are two concentric spherical conductive surfaces, the earth and the ionosphere, forming a closed volume or cavity.
A more familiar cavity might be a bottle, which can be made to give a tone by blowing air across its opening. This is a simple acoustic resonance, and is formed by the creation of a standing wave inside the bottle. The Earth-ionosphere cavity has a similar sort of resonance, which can be thought of as being formed by a standing electromagnetic wave that encircles the whole globe, supported between the two conductive layers. Imagine a single wave of electromagnetism that has a length that encircles the planet. As it takes just under 1/8 of a second to transit the circumference of the globe at the speed of light, then we can understand that the base resonant frequency of the planet will be on the order of ~8 cycles per second, or 8 Hz.
Another aspect of the Earth-ionosphere cavity is that it has a very large electrical charge, like a capacitor. This charge is dissipated by lightning strikes, which are occurring in large numbers at all times around the Earth. This charge is constantly being replenished by input from the sun, and by other means. The continual crackle of this static discharge, created by the presence of thunderstorms across the planet, is akin to the blowing of air across the bottle mouth. It keeps the cavity excited and in oscillation.
There are many stations which actually measure this low frequency oscillation, such as the one at Stanford, which gives daily measurements