The University of Southampton
University of Southampton Institutional Repository

Ohmic heating as evidence for strong field-aligned currents in filamentary aurora

Ohmic heating as evidence for strong field-aligned currents in filamentary aurora
Ohmic heating as evidence for strong field-aligned currents in filamentary aurora
A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one-dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field-aligned current can account for the required heat source.
ionosphere, particle precipitation, Ionosphere, plasma temperature and density, magnetospheric physics, current systems
0148-0227
1785-1794
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Lummerzheim, D.
6432baa4-48ac-4203-bc2d-973de7f3efde
Otto, A.
7a7273f8-b54e-438f-a3b4-ed59323cdacc
Rees, M.H.
6ecc0166-51bf-4afd-9471-acbb415fd156
Sedgemore-Schulthess, K.J.F.
f4e1a9d3-850a-4169-ae6a-0fb5342bc456
Zhu, H.
56de08ce-886f-4d04-bbc5-ee175ce014ae
McCrea, I.W.
20f26ce6-db81-4ce4-af69-3bee87e65923
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Lummerzheim, D.
6432baa4-48ac-4203-bc2d-973de7f3efde
Otto, A.
7a7273f8-b54e-438f-a3b4-ed59323cdacc
Rees, M.H.
6ecc0166-51bf-4afd-9471-acbb415fd156
Sedgemore-Schulthess, K.J.F.
f4e1a9d3-850a-4169-ae6a-0fb5342bc456
Zhu, H.
56de08ce-886f-4d04-bbc5-ee175ce014ae
McCrea, I.W.
20f26ce6-db81-4ce4-af69-3bee87e65923

Lanchester, B.S., Lummerzheim, D., Otto, A., Rees, M.H., Sedgemore-Schulthess, K.J.F., Zhu, H. and McCrea, I.W. (2001) Ohmic heating as evidence for strong field-aligned currents in filamentary aurora. Journal of Geophysical Research, 106 (A2), 1785-1794. (doi:10.1029/1999JA000292).

Record type: Article

Abstract

A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one-dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field-aligned current can account for the required heat source.

Text
1999JA000292.pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Published date: 1 February 2001
Keywords: ionosphere, particle precipitation, Ionosphere, plasma temperature and density, magnetospheric physics, current systems

Identifiers

Local EPrints ID: 37648
URI: http://eprints.soton.ac.uk/id/eprint/37648
ISSN: 0148-0227
PURE UUID: 241a27b4-270c-4358-bc60-0ab97a878def

Catalogue record

Date deposited: 24 May 2006
Last modified: 15 Mar 2024 08:00

Export record

Altmetrics

Contributors

Author: B.S. Lanchester
Author: D. Lummerzheim
Author: A. Otto
Author: M.H. Rees
Author: K.J.F. Sedgemore-Schulthess
Author: H. Zhu
Author: I.W. McCrea

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×