eprintid: 120191
rev_number: 70
eprint_status: archive
userid: 608
dir: disk0/00/12/01/91
datestamp: 2010-10-23 01:28:20
lastmod: 2021-10-17 23:55:36
status_changed: 2012-08-28 11:04:06
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Hill, TW
creators_name: Rymer, AM
creators_name: Burch, JL
creators_name: Crary, FJ
creators_name: Young, DT
creators_name: Thomsen, MF
creators_name: Delapp, D
creators_name: Andre, N
creators_name: Coates, AJ
creators_name: Lewis, GR
title: Evidence for rotationally driven plasma transport in Saturn's magnetosphere
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F63
keywords: Io torus, Jovian magnetosphere, Jupiters inner, Interchange, Corotation, Signatures
note: Copyright 2005 by the American Geophysical Union
abstract: [ 1] Radial convective transport of plasma in a rotation-dominated magnetosphere implies alternating longitudinal sectors of cooler, denser plasma moving outward and hotter, more tenuous plasma moving inward. The Cassini Plasma Spectrometer ( CAPS) has provided dramatic new evidence of this process operating in the magnetosphere of Saturn. The inward transport of hot plasma is accompanied by adiabatic gradient and curvature drift, producing a V-shaped dispersion signature on a linear energy-time plot. Of the many (similar to 100) such signatures evident during the first two Cassini orbits, we analyze a subset ( 48) that are sufficiently isolated to allow determination of their ages, widths, and injection locations. Ages are typically < 10.8 hr ( Saturn's rotation period) but range up to several rotation periods. Widths are typically < 1 RS ( Saturn's radius) but range up to several RS. Injection locations are randomly distributed in local time and in Saturnian longitude. The apex of the V sometimes coincides with a localized density cavity in the cooler background plasma, and usually coincides with a localized diamagnetic depression of the magnetic field strength. These signatures are fully consistent with the convective motions that are expected to result from the centrifugal interchange instability.
date: 2005-06-22
publisher: AMER GEOPHYSICAL UNION
official_url: http://dx.doi.org/10.1029/2005GL022620
vfaculties: VMPS
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_batch
elements_source: Web of Science
elements_id: 72188
doi: 10.1029/2005GL022620
language_elements: EN
lyricists_name: Coates, Andrew
lyricists_name: Lewis, Gethyn
lyricists_id: AJCOA20
lyricists_id: GVLEW69
full_text_status: public
publication: Geophysical Research Letters
volume: 32
number: 14
article_number: L14S10
issn: 0094-8276
citation:        Hill, TW;    Rymer, AM;    Burch, JL;    Crary, FJ;    Young, DT;    Thomsen, MF;    Delapp, D;             ... Lewis, GR; + view all <#>        Hill, TW;  Rymer, AM;  Burch, JL;  Crary, FJ;  Young, DT;  Thomsen, MF;  Delapp, D;  Andre, N;  Coates, AJ;  Lewis, GR;   - view fewer <#>    (2005)    Evidence for rotationally driven plasma transport in Saturn's magnetosphere.                   Geophysical Research Letters , 32  (14)    , Article L14S10.  10.1029/2005GL022620 <https://doi.org/10.1029/2005GL022620>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/120191/1/2005GL022620.pdf