@article{ref1,
title="Electric Currents Accompanying Tornado Activity",
journal="Science",
year="1967",
author="Brook, M.",
volume="157",
number="3795",
pages="1434-1436",
abstract="Measurements of the magnetic field and earth current in the vicinity of a tornado show large steplike deflections coincident with the touching down of the funnel. Calculations with a simple current model indicate that a minimum current of several hundred amperes must be postulated to account for the observed deflection in magnetic field. The existence of a steady current of 225 amperes for a period of about 10 minutes provides joule heat at the rate of approximately 10(10) joules per second, and involves a total charge transfer of 135,000 coulombs. The calculations imply that a tornado is electrically equivalent to several hundred isolated thunderstorm cells active simultaneously.<p /><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.157.3795.1434",
url="http://dx.doi.org/10.1126/science.157.3795.1434"
}