Joule heat production rate and the particle energy injection rate as a function of the geomagnetic indices AE and AL

Journal Article · Mon Aug 01 00:00:00 EDT 1983 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA088iA08p06275· OSTI ID:5667852

Ahn, B; Akasofu, S; Kamide, Y

As a part of the joint efforts of operating six meridian chains of magnetometers during the IMS, magnetic records from 71 stations are used to deduce the distribution of electric fields and currents in the polar ionosphere for March 17, 18, and 19, 1978. As a continuation of this project, we have constructed hourly distribution maps of the Joule heat production rate and their sum over the entire polar region on the three days. For this purpose the conductivity distribution is inferred at each instant partially on the basis of an empirical method devised by Ahn et al. (1982). The particle energy injection rate is estimated similarly by using an empirical method. The data set thus obtained allows us to estimate also the global Joule heat production rate U/sub J/, the global particle energy injection rate U/sub A/ and the sum U/sub Gamma/ of the two quantities. It is found that three global quantities (watt) are related almost linearly to the AE(nT) and AL(nT) indices. Our present estimates give the following relationships: U/sub J/ = 2.3 times 10/sup 8/ x AE/sub 8/ U/sub A/ = 0.6 times 10/sup 8/ x AE/sub 8/ and U/sub I/ = 2.9 times 10/sup 8/ x AE: U/sub J/ = 3.0 times 10/sup 8/ x AL/sub 8/ U/sub A/ = 0.8 times 10/sup 8/ x AL, and U/sub I/ = 3.8 times 10/sup 8/ x AL.

• Research Organization: Geophysical Institute, University of Alaska, Fairbanks, Alaska 99701
• OSTI ID: 5667852
• Journal Information: J. Geophys. Res.; (United States), Vol. 88:A8
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
IONOSPHERE
ELECTRIC FIELDS
RING CURRENTS
ELECTRIC CONDUCTIVITY
ENERGY ABSORPTION
HOURLY VARIATIONS
INTERNATIONAL MAGNETOSPHERIC STUDY
JOULE HEATING
POLAR CUSP
ABSORPTION
CURRENTS
EARTH ATMOSPHERE
ELECTRIC CURRENTS
ELECTRIC HEATING
ELECTRICAL PROPERTIES
HEATING
PHYSICAL PROPERTIES
PLANETARY IONOSPHERES
PLASMA HEATING
RESISTANCE HEATING
VARIATIONS
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena