Telluric Currents Results of Data Collection

Examination of a typical data block of 500 samples shows a sinusoidal signal of small amplitude with a period of about 4.5 seconds and a number of step changes.

Below is a screen shot of the block:-

The width of the graph is 500 samples at 1 sample per second - i.e. the above graph is 8.33' minutes wide.

In addition to the small 4.5 second sinusoidal signal there are the step changes in potential of approximately 50 seconds duration.

Out of curiosity I decided to use a well-used method for presenting very slow data in a manner which is easier to analyse.    This method converts the data to a WAV file to allow a speeded version of the data to be played back as audio.  

Go to the Telluric "Sounds" page to hear the results of this exercise.