Kevin Cann
Independent Researcher · California
Background in nuclear engineering and applied physics. Current research interests include geomagnetic variability in historical astronomical archives, Earth–ionosphere cavity resonance, and radiation belt dynamics.
Publication
Cann, K. (2026). Geomagnetic storm enhancement of Schumann resonance amplitude: a dose-response analysis using the Sierra Nevada ELF archive. Journal of Atmospheric and Solar-Terrestrial Physics. doi.org/10.1016/j.jastp.2026.106931
Four years of continuous measurements from the Sierra Nevada ELF station show Mode 1 amplitude rising monotonically with geomagnetic storm intensity. The effect survives controls for season, global lightning activity, and autocorrelation.
Under Review
Cann, K. (2026). Plate sensitivity is invariant across geomagnetic storm intensity at Harvard and Palomar: a protocol for artifact control in historical plate archive studies. Open Journal of Astrophysics, submitted 2026.
A general protocol for testing whether a claimed time-domain signal in a photographic plate archive is instead a plate-sensitivity artifact tracking an environmental variable. Applied to geomagnetic activity at Harvard College Observatory (DASCH DR7, 12,510 exposures) and Palomar (MAPS Catalog of POSS-I, 638 fields), plate sensitivity shows no trend across storm intensity at either site.
Contact
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