The Origin of Petroglyphs-Recordings of a Catastrophic Aurora in Human Prehistory? by D A Scot and A L Peratt (Anthony Peratt) is another very very short free PDF showing the summary of their paper or talk but this time as the as a Conference Record of the International Conference on Plasma Science (ICOPS 2003).
View more free PDF’s on petroglyphs including the very important Characteristics for the Occurrence of a High-Current, Z-Pinch Aurora as Recorded in Antiquity by Anthony Peratt.
Quote from The Origin of Petroglyphs-Recordings of a Catastrophic Aurora in Human Prehistory?
Petroglyphs are images created on rock by means of carving or ‘pecking’ the outer surface to expose the surface underneath. They are found on all continents except Antarctica. The purpose of this paper is an attempt to explain how in man’s prehistory recordings of high-energy-density phenomena (some not experimentally recorded until the last few years) could have been carved on rock in an accurate, systematic, and apparently temporally accurate fashion.
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