@article{Archer:2017:10.1002/2016JA023428,
author = {Archer, MO and Hartinger, MD and Walsh, BM and Angelopoulos, V},
doi = {10.1002/2016JA023428},
journal = {Journal of Geophysical Research: Space Physics},
pages = {212--226},
title = {Magnetospheric and solar wind dependences of coupled fast-mode resonances outside the plasmasphere},
url = {http://dx.doi.org/10.1002/2016JA023428},
volume = {122},
year = {2017}
}

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TY  - JOUR
AB  - We investigate the magnetospheric and solar wind factors that control the occurrence probabilities, locations, and frequencies of standing Alfvén waves excited via coupled fast-mode resonances (cFMRs) in the outer magnetosphere's dawn and dusk sectors. The variation of these cFMR properties with the observed magnetospheric plasma density profiles and inputs to the semiempirically modeled magnetic field from the numerical cFMR calculations of Archer et al. (2015) are studied. The probability of cFMR occurrence increases with distance between the magnetopause and the Alfvén speed's local maximum. The latter's location depends on magnetospheric activity: during high activity it is situated slightly outside the plasmapause, whereas at low activity it is found at much larger radial distances. The frequencies of cFMR are proportional to the Alfvén speed near the magnetopause, which is affected by both density and magnetic field variations. The location of the excited resonance, however, depends on the relative steepness of the Alfvén speed radial profile. The steeper this is, the closer the resonance is to the outer boundary and vice versa. The variation of the density profiles with solar wind conditions and activity is also shown.
AU  - Archer,MO
AU  - Hartinger,MD
AU  - Walsh,BM
AU  - Angelopoulos,V
DO  - 10.1002/2016JA023428
EP  - 226
PY  - 2017///
SN  - 2169-9380
SP  - 212
TI  - Magnetospheric and solar wind dependences of coupled fast-mode resonances outside the plasmasphere
T2  - Journal of Geophysical Research: Space Physics
UR  - http://dx.doi.org/10.1002/2016JA023428
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000395655800018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/53364
VL  - 122
ER  - 

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