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Record #173531:
Outer magnetosphere topology and Pc5 ULF waves at high-latitudes / S.T. Ables, B.J. Fraser, F.W. Menk, D.A. Neudegg, R.J. Morris, Liu Ruiyuan.
Title: | Outer magnetosphere topology and Pc5 ULF waves at high-latitudes / S.T. Ables, B.J. Fraser, F.W. Menk, D.A. Neudegg, R.J. Morris, Liu Ruiyuan. |
Author(s): | Ables, S. T. Fraser, B. J. Menk, F. W. Neudegg, D. A. Morris, R. J. Ruiyuan, Liu. |
Date: | 2001. |
Publisher: | Canberra: Australian Goverment Publishing Service |
In: | Australian solar terrestrial and space physics research. (2001.), |
Abstract: | Induction magnetometer data recorded in 1996 at three closely-spaced sites near Davis station, Antarctica, were examined for ionospheric signatures of outer magnetosphere and cusp/cleft regions. Cross-phase analysis of 1-10 mHz band using pure-state filtering techniques reveal diurnally varying field line resonances embedded in the spectra, while interstation phase lag measurements indicate azimuthal propagation of waves away from local magnetic noon. Using T96 external field model, cross-phase measurements are put in context of diurnally changing field line topology due to compression at sub-solar region and stretching along dawn and dusk flanks, suggesting field line stretching as an alternative or additional explanation to the Kelvin-Helmholtz instability for azimuthal wave propagation. A wave cusp meridian identified in propagation data shows variable location about local magnetic noon which is under control of IMF By and shows same well-known behaviour as cusp to these variations. |
Notes: | In: Australian solar terrestrial and space physics research / R.J. Morris, P.J. Wilkinson. |
Keywords: | 550.3 -- Geophysics. 550.385 -- Magnetic disturbances and variations. 550.37 -- Terrestrial electricity. 550.385.2 -- Geomagnetism, regular variations. 550.386 -- Magnetic activity. 551.510.537 -- Magnetosphere. 551.510.535 -- Ionosphere. 551.521.6 -- Radiation of special wave lengths. 91(08) -- Expeditions: 1947- Australian National Antarctic Research Expeditions. 91(08) -- Expeditions: 1996 ANARE. A -- Geophysical sciences (general). (*7) -- Antarctic regions. (*74) -- Australian Antarctic Territory. (*744) -- Princess Elizabeth Land. |
SPRI record no.: | 173531 |
LDR 02700naa#a2200000#a#4500 001 SPRI-173531 005 20240328191715.0 007 ta 008 240328s2001####acaa###|#####|0||#0#eng#d 035 ## ‡aSPRI-173531 040 ## ‡aUkCU-P‡beng‡eaacr 245 00 ‡aOuter magnetosphere topology and Pc5 ULF waves at high-latitudes /‡cS.T. Ables, B.J. Fraser, F.W. Menk, D.A. Neudegg, R.J. Morris, Liu Ruiyuan. 260 ## ‡aCanberra :‡bAustralian Goverment Publishing Service,‡c2001. 300 ## ‡ap. 355-368 :‡bdiags. 490 0# ‡aANARE Reports ;‡v146 500 ## ‡aIn: Australian solar terrestrial and space physics research / R.J. Morris, P.J. Wilkinson. 520 3# ‡aInduction magnetometer data recorded in 1996 at three closely-spaced sites near Davis station, Antarctica, were examined for ionospheric signatures of outer magnetosphere and cusp/cleft regions. Cross-phase analysis of 1-10 mHz band using pure-state filtering techniques reveal diurnally varying field line resonances embedded in the spectra, while interstation phase lag measurements indicate azimuthal propagation of waves away from local magnetic noon. Using T96 external field model, cross-phase measurements are put in context of diurnally changing field line topology due to compression at sub-solar region and stretching along dawn and dusk flanks, suggesting field line stretching as an alternative or additional explanation to the Kelvin-Helmholtz instability for azimuthal wave propagation. A wave cusp meridian identified in propagation data shows variable location about local magnetic noon which is under control of IMF By and shows same well-known behaviour as cusp to these variations. 650 07 ‡a550.3 -- Geophysics.‡2udc 650 07 ‡a550.385 -- Magnetic disturbances and variations.‡2udc 650 07 ‡a550.37 -- Terrestrial electricity.‡2udc 650 07 ‡a550.385.2 -- Geomagnetism, regular variations.‡2udc 650 07 ‡a550.386 -- Magnetic activity.‡2udc 650 07 ‡a551.510.537 -- Magnetosphere.‡2udc 650 07 ‡a551.510.535 -- Ionosphere.‡2udc 650 07 ‡a551.521.6 -- Radiation of special wave lengths.‡2udc 650 07 ‡a91(08) -- Expeditions: 1947- Australian National Antarctic Research Expeditions.‡2udc 650 07 ‡a91(08) -- Expeditions: 1996 ANARE.‡2udc 650 07 ‡aA -- Geophysical sciences (general).‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*74) -- Australian Antarctic Territory.‡2udc 651 #7 ‡a(*744) -- Princess Elizabeth Land.‡2udc 700 1# ‡aAbles, S. T. 700 1# ‡aFraser, B. J. 700 1# ‡aMenk, F. W. 700 1# ‡aNeudegg, D. A. 700 1# ‡aMorris, R. J. 700 1# ‡aRuiyuan, Liu. 773 0# ‡7p1am ‡aMorris, R. J. ‡tAustralian solar terrestrial and space physics research. ‡dCanberra : Australian Goverment Publishing Service, 2001. ‡wSPRI-165946 916 ## ‡a2006/02/21 -- HS 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240328 ‡bHS