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Originally Posted by FrankM
Here is another site that provides info on building a field mill.
http://freespace.virgin.net/paul.z/E...meter%20MK%202
This device provides a methodology for determining polarity, which would be important for the determination of earthquake induced surface charge levels. Earthquake induced charges provide a short term polarity reversal at the surface relative to the atmosphere. |
Thanks again Frank. Besides the added polarity indication feature, this model looks sturdier.
I haven't yet found a description of the field mills use in the field as it were. How they capture the data with the home-builts for example. I noticed most the references have the field mill stationary, but I rather had in mind to move with it on a line taking periodic stationary measurements. While this adds complexity to the data by changing position over time, if you consistantly use that method then you can build up a library of similar readings to compare.
I have bookmarked several of the articles linked to on the new satellite use in mapping Infrared & other variations, & the rock squeezing experiments producing the migrating holes. Off to study then; adieu.
