Uberoi, C, Spatial and temporal cusp structures observed by multiple spacecraft and ground based observations,Space Sci. Rev, 107, 197 – 206, 2003

Uspensky, M. V., A. V. Kustov, G. Sofko, J. Koehler, J. P. Villain, C. Hanuise, J. M. Ruohoniemi, and P. J. S. Williams, Ionospheric refraction effects in slant range profiles of auroral HF coherent echoes,Radio Sci., 29, 503-517, 1994

Uspensky, M., P. Eglitis, H. Opgenoorth, G. Starkov, T. Pulkkinen, and R. Pellinen, On auroral dynamics observed by HF radar: 1. Equatorward edge of the afternoon-evening diffuse luminosity belt,Ann. Geophys, 18, 1560-1575, 2001

Uspensky, M.V., A.V. Koustov, P. Eglitis, A. Huuskonen, S.E. Milan, T. Pulkkinen, and R. Pirjola, CUTLASS HF radar observations of high-velocity E-region echoes, Ann. Geophys., 19, 411-424, 2001

uvijgK <a href=, uvijgK <a href=,cBmoIaJkERSZb, kgNqmNoGkqcxqJu, TUgAVPSvpkvvoiWEzyN, rfJKUEAUr

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Valladares, C. E., D. Alcayde, J. V. Rodriguez, J. M. Ruohoniemi, and A. P. Van Eyken, Observations of plasma density structures in association with the passage of traveling convection vortices and the occurrence of large plasma jets,Ann. Geophys., 17, 1020-1039, 1999

Vallières, X., J.-P. Villain, and R. André, Characterization of frequency effect in SuperDARN spectral width distribution,Radio Sci., 38(1), 1003, DOI 10.1029/2001RS002550, 2003

Vallières, X., J.-P. Villain, and R. André, Characteization of frequency effect in SuperDARN spectral width distribution,Radio Sci., 38, DOI 10.1029/2001RS002550, 2003

Villain, J. P., Greenwald, R. A., Baker, K. B., Ruohoniemi, J. M., HF radar observations of E region plasma irregularities produced by oblique electron streaming,J. Geophys. Res., 92, 12327-12342, 1987

Villain, J. P., Hanuise, C., Greenwald, R. A., Baker, K. B., Ruohoniemi, J. M., Obliquely propagating ion acoustic waves in the auroral E region: further evidence of irregularity production by field-aligned electron streaming,Journal of Geophysical Research, 95, 7833-7846, 1990

Villain, J. P., R. Andre, C. Hanuise, D. Gresillon, Observations of the high-latitude ionosphere by HF radars: Interpretation in terms of collective wave scattering and characterization of turbulence,J. Atmos. Terr. Phys., 58, 943-958, 1996

Villain, J.-P., G. Caudel, and C. Hanuise, Jean-Paul's drift comparison,J. Geophys. Res., 90, 8433, 1985

Villain, J.P., R. André, M. Pinnock, R.A. Greenwald and C. Hanuise, A statistical study of the Doppler spectral width of high-latitude F-region echoes recorded with SuperDARN coherent HF radars,Ann. Geophys, 20, 1769 – 1782, 2002

Vilmer, N., M. Pick, R. Schwenn, P. Ballatore, and J.-P. Villain, On the solar origin of interplanetary coronal mass ejections observed in the vicinity of the Earth,Ann. Geophysicae, 21 , 847-862, 2003

Voiculescu, M., A. Aikio, T. Nygren and J.M. Ruohoniemi, IMF effect on sporadic-E layers at two northern polar cap sites: Part 1- Statistical study,Ann. Geophysicae, 24, 887-900, 2006

Vontrat-Reberac, A., J.-C. Cerisier, N. Sato et M. Lester, Noon ionospheric signatures of a sudden commencement following a solar wind pressure pulse,Ann. Geophys, 20, 639-645, 2002

Voronkov, I., E. Friedrich, and J. C. Samson, Dynamics of the substorm growth phase as observed using CANOPUS and SuperDARN instruments,J. Geophys. Res, 104, 28,491, 1999

Walker, A. D. M., Resonances by MHD waves originating in the solar wind,J. Geophys. Res., 107, doi:10.1029/2001JA009188, 2002

Walker, A. D. M., The SHARE radar at Sanae Antarctica,South African Journal of Science, 98, 257-263, 2002

Walker, A. D. M., Coupling between waveguide modes and field line resonances,Journal of Atmospheric and Solar-Terrestrial Physics, 62, 799-813, 2000

Walker, A. D. M., Greenwald, R. A., Baker, K. B., Determination of the flunctuation level of ionospheric irregularities from radar backscatter measurements,Radio Science, 22, 689-705, 1987

Walker, A. D. M., Ruohoniemi, J. M., Baker, K. B., Greenwald, R. A., Samson, J. C., Spatial and temporal behavior of ULF pulsations observed by the Goose Bay HF radar,Journal of Geophysical Research, 97, 12187-12202, 1992

Walker, A. D. M., J. M. Ruohoniemi, K. B. Baker, R. A. Greenwald, J. C. Samson, Spectral properties of magnetotail oscillations as a source of Pc5 pulsations,Adv. Space Res., 13, (4)59-65, 1993

Walker, A. D., M. Pinnock, K. B. Baker, J. R. Dudeney and J. P. S. Rash, Strong flow bursts in the nightside ionosphere during extremely quite solar wind conditions,Geophysical Research Letters, 25, 881-884, 1998

Walker, A.D.M., K.B. Baker, M. Pinnock, J.R. Dudeney, and J.P.S. Rash, Radar observations of magnetospheric activity during extremely quiet solar wind conditions,J. Geophys. Res, 107, doi 10.1029/2001JA900142, 2002

Watanabe, M., and G. J. Sofko, Role of interchange reconnection in convection at small interplanetary magnetic field clock angles and in transpolar arc motion,J. Geophys. Res., 114, A01209, doi:10.1029/2008JA013426, 2009

Watanabe, M., and G. J. Sofko, Dayside four-sheet field-aligned current system during IMF By-dominated periods,J. Geophys. Res., 114, A03208, doi:10.1029/2008JA013815, 2009

Watanabe, M., and G. Sofko, Synthesis of various ionospheric convection patterns for IMF BY dominated periods: Split crescent cells, exchange cells, and theta aurora formation,J. Geophys. Res., 113, A09218, doi:10.1029/2007JA012868, 2008

Watanabe, M., and George J. Sofko, The interchange cycle – A fundamental mode of magnetic flux circulation for northward interplanetary magnetic field,Geophys. Res. Lett, 36, L03107, doi:10.1029/2008GL036682, 2009

Watanabe, M., G.J. Sofko, D.A. Andre, J.M. Ruoniemi, M.R. hairston and K. Kabin, Ionospheric signatures of internal reconnection for northward interplanetary magnetic field; Observation of 'reciprocal cells' and magnetosheath ion precipitation,J. Geophys. Res., 111, A06201, 10.1029/2005JA011446, 2006

Watanabe, M., G.J. Sofko, D.A. André, T. Tanaka, and M.R. Hairston, Polar cap bifurcation during steady-state northward interplanetary magnetic field with |By| ~ Bz,J. Geophys. Res., 109 (A1), A01215, doi:10.1029/2003JA009944, 2004

Watanabe, M., G.J. Sofko, Xi Yan, K.A. McWilliams, J.-P. St.-Maurice, A.V. Koustov, and G.C. Hussey, Interchange cycles at small IMF clock angles: PolarDARN/SuperDARN observations,J. Geophys. Res, , , Spring 2009

Watanabe, M., M. Pinnock, A.S. Rodger, N. Sato, H. Yamagishi, A.S. Yukimatu, R.A. Greenwald, J.-P. Villain, M.R. Hairston, Localized activation of the distant tail neutral line just prior to substorm onsets,J. Geophys. Res., 103, 17,651-17,669, 1998

Watanabe, M., N. Sato, R.A. Greenwald, M. Pinnock, M.R. Hairston, R.L. Rairden, D.J. McEwen, The ionospheric response to interplanetary magnetic field variations: Evidence for rapid global change and the role of preconditioning in the magnetosphere,J. Geophys. Res., 105, 22,955-22,977, 2000

Waters, C.L., B.J. Anderson, R.A. Greenwald, R. J. Barnes and J. M. Ruohoniemi, High latitude Poynting flux from combined Iridium and SuperDARN data,Ann. Geophys., 22, 2861-2875, 2004

Waters, C.L., T.K. Yeoman, M.S. Sciffer, P.V. Ponomarenko and D.M. Wright, Modulation of radio wave signals by ULF waves,Ann. Geophys., 25, 1113-1124, 2007

Whittington, J., J. Devlin and T. Salim, Evaluation of Digital Generation and Phasing Techniques for Transmitter Signals of the TIGER N.Z. Radar. WARS02 (Workshop on Applications of Radio Science) Proceedings, (Ed. P. Wilkinson) National Committee for Radio Science,Australian Academy of Science, Paper G12, 1-4, 2002

Wild, J.A. and A. Grocott, The influence of magnetospheric substorms on SuperDARN radar backscatter,J. Geophys. Res., 113, A04308, doi:10.1029/2007JA012910, 2008

Wild, J.A., and T.K. Yeoman, CUTLASS HF radar observations of high latitude azimuthally propagating vortical currents in the nightside ionosphere during magnetosphere substorms,Ann. Geophys, 18, 640-652, 2000

Wild, J.A., S.E. Milan, C.J. Owen, J.M. Bosqued, M. Lester, D.M. Wright, H. Frey, C.W. Carlson, A.N. Fazakerley, and H. Rème, The location of the open-closed magnetic field line boundary in the dawn sector auroral ionosphere,Ann. Geophysicae, 22, 3625-3639, 2004

Wild, J.A., S.E. Milan, J.A. Davies, M.W. Dunlop, D.M. Wright, C.M. Carr, A. Balogh, H. Reme, A.N. Fazakerley and A. Marchaudon, On the location of dayside magnetic reconnection during an interval of duskward oriented IMF,Ann Geophys., 25, 219-238, 2007

Wild, J.A., S.E. Milan, J.A. Davies, S.W.H. Cowley, C.M. Carr, and A. Balogh, Double Star, Cluster, and ground-based observations of magnetic reconnection during an interval of duskward oriented IMF: preliminary results,Ann. Geophysicae, 23, 2903-2907, 2005

Wild, J.A., S.E. Milan, S.W.H. Cowley, M.W. Dunlop, C.J. Owen, M.G.G.T. Taylor, J.A. Davies, M. Lester, N. Sato, A.S. Yukimatu, A.N. Fazakerley, and A. Balogh, Coordinated inter-hemispheric SuperDARN radar observations of the ionospheric response to flux transfer events observed by the Cluster spacecraft at the high-latitude magnetopause,Ann. Geophys, 21, 1807 - 1826, 2003

Wild, J.A., S.W.H. Cowley, J.A. Davies, H. Khan, M. Lester, S.E. Milan, G. Provan, T.K. Yeoman, A. Balogh, M.W. Dunlop, K.?H. Fornacon, and E. Georgescu, First simultaneous observations of flux transfer events at the high-latitude magnetopause by the Cluster spacecraft and pulsed radar signatures in the conjugate ionosphere by the CUTLASS and EISCAT radars,Ann. Geophys, 19, 1491-1508, 2001

Wild, J.A., T.K. Yeoman, P. Eglitis, and H.J. Opgenoorth, Multi-instrument observations of the electric and magnetic field structure of omega bands,Ann. Geophys, 18, 99-110, 2000

Wilder, F.D., C.R. Clauer and J.B.H. baker, Reverse convection potential saturation for northward IMF,Geophys. Res. Lett., 35, L12103, doi:10.1029/2008GL034040, 2008

Wing, S., P. T. Newell, and J. M. Ruohoniemi, Double cusp: Model prediction and observational verification,J. Geophys. Res, 106, 25571-25593, 2001

Winglee, R. M., D. Chua, M. Brittnacher, G. K. Parks and G. Lu, global inpact of ionospheric outflows on the dynamics of the magnetosphere and cross-polar cap potential,J. Geophys. Res., 107, doi:10.1029/2001JA000214, 2002

Wood, A.G. S. E. Pryse, H. R. Middleton, and V. S. C. Howells, Multi-instrument observations of nightside plasma patches under conditions of IMF Bz positive,Ann. Geophys., 26, 2203-2216, 2008

Woodfield, E.E., J.A. Davies, M. Lester, T.K. Yeoman, P. Eglitis, and M. Lockwood, Nightside studies of coherent HF radar spectral width behaviour,Ann. Geophys, 20, 1399 - 1413, 2002

Woodfield, E.E., J.A. Davies, P. Eglitis, and M. Lester, High and variable spectral width in the pre-dawn sector: A case study involving CUTLASS, EISCAT, ESR and optical data,Ann. Geophys, 20, 501-509, 2002

Woodfield, E.E., K. Hosokawa, S.E. Milan, N. Sato, and M. Lester, An interhemispheric, statistical study of nightside spectral width distributions from coherent HF scatter radars,Ann. Geophys, 20, 1921- 1934, 2002

Woodfield,E. E., J.A. Davies, P.Eglitis, and M. Lester, A case study of HF radar spectral width in the post midnight magnetic local time sector and its relationship to the polar cap boundary,Annal. Geophys., 20, 501-509, 2002

Wright, D. M., T. K. Yeoman, I. J. Rae, J. Storey, A. B. Stockton-Chalk, J. L. Roeder and K. J. Trattner, Ground-based and polar spacecraft observations of a giant (Pg) pulsation and its associated source mechanism,J. Geophys. Res., 106, doi:10.1029/2001JA900022, 2001

Wright, D.M., Bridging the gap between ground- and space-based investigations of magnetosphere-ionosphere coupling processes,Adv. Space Res., 38, 1678-1684, 2006

Wright, D.M., and T.K. Yeoman, High resolution bistatic radar observations of ULF waves in artificially generated backscatter,Geophys. Res. Lett., 26, 2825-2828, 1999

Wright, D.M., and T.K. Yeoman, CUTLASS observations of a high-m ULF wave and its consequences for the DOPE HF Doppler sounder,Ann. Geophysicae, 17, 1493-1497, 1999

Wright, D.M., J.A. Davies, T.K. Yeoman, T.R. Robinson, and H. Shergill, Saturation and hysteresis effects in ionospheric modification experiments observed by the CUTLASS and EISCAT radars,Ann. Geophysicae, 24, 543-553, 2006

Wright, D.M., J.A. Davies, T.R. Robinson, P.J. Chapman, T.K. Yeoman, E.C. Thomas, M. Lester, S.W.H. Cowley, A.J. Stocker, R.B. Horne, and F. Honary, Space Plasma Exploration by Active Radar (SPEAR): an overview of a future radar facility,Ann. Geophysicae, 18, 1248 - 1255, 2000

Wright, D.M., T.K. Yeoman, and E.E. Woodfield, The effects of high frequency ULF wave activity on the spectral characteristics of coherent HF radar returns: a case study,Ann. Geophysicae, 22, 1843-1849, 2004

Wright, D.M., T.K. Yeoman, R. Dhillon, M. Lester, J.A. Davies, S.E. Milan, and E. Woodfield, High resolution observations of spectral width features associated with ULF wave signatures in artificial HF radar backscatter,Ann. Geophysicae, 22, 169-182, 2004

Xu, L. A.V. Koustov, J.S. Xu, R. A. Drayton, and L. Huo, A 2-D comparison of ionospheric convection derived
from SuperDARN and DMSP measurements,Adv. Space Res., 42 (7), 1259-1266, doi:10.1016/j.asr.2007.06.044, 2007

Xu, L., A. V. Koustov, J. Thayer and M. McCready, SuperDARN convection and Sondrestrom plasma drift,Ann. Geophys., 19, 749-759, 2001

Xu, L., J. Xu, A. Koustov, V. Papitashvili, and F. Rich, A comparison of SuperDARN-derived plasma convection and DMSP ion drift measurements,Wuhan University Journal of Natural Sciences, 12, 279-283, doi:10.1007/s11859-006-0024-2, 2007

Yeoman T.K., and D.M. Wright, ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter,Ann. Geophys, 19, 159-170, 2001

Yeoman, T. K., D. M. Wright, T. R. Robinson, J. A. Davies, and M. Rietvel, High spatial and temporal resolution observations of an impulse-driven field line resonance in radar backscatter artificially generated with the Tromsø heater,Ann. Geophys., 15, 634-644, 1997

Yeoman, T. K., M. Lester, S. W. H. Cowley, S. E. Milan, J. Moen, and P. E. Sandholt, Simultaneous observations of the cusp in optical, DMSP and HF radar data,Geophysical Research Letters, 24 (17), 2251-2254, 1997

Yeoman, T. K., Mattin, N., Ruohoniemi, J. M., Lester, M., Pinnock, M., An assessment of the L shell fitting beam-swinging technique for measuring ionospheric E region irregularity drift patterns,J. Geophys. Res., 97, 14885-14896, 1992

Yeoman, T. K., R. V. Lewis, H. Khan, S. W. H. Cowley, and J. M. Ruohoniemi, Interhemispheric observations of nightside ionospheric electric fields in response to IMF Bz and By changes and substorm pseudobreakup,Ann. Geophys, 18, 897-907, 2000

Yeoman, T., Pinnock, M., The high latitude convection response to an interval of substorm activity,Ann. Geophys., 14, 518, 1996

Yeoman, T. K., and H. Lühr, observations of high latitude impulsive convection features during the substorm expansion phase,ESA SP-389, 389, 173-178, 1996

Yeoman, T. K., and H. Lühr, CUTLASS/IMAGE observations of high latitude convection features during substorms,Annales Geophysicae, 15, 692-702, 1997

Yeoman, T.K., and H. Lühr, CUTLASS/IMAGE observations of high latitude convection features during substorms,Adv. Space Res., 22, (9)1293–(9)1296, 1998

Yeoman, T.K., Blagoveshchenskaya N Kornienko V, Robinson TR, Dhillon RS, Wright DM, Baddeley LJ, SPEAR: Early results from a very high latitude ionospheric heating facility,Adv. Space Res., 40 (3), 384-389, 2007

Yeoman, T.K., D.M. Wright, A.J. Stocker, and T.B. Jones, An evaluation of range accuracy in the SuperDARN over-the-horizon HF radar systems,Radio Sci, 36, 801-813, 2001

Yeoman, T.K., G. Chisham, L. J. Baddeley, R. S. Dhillon, T. J. T. Karhunen, T. R. Robinson, A. Senior, and D. M. Wright, Mapping ionospheric backscatter measured by the SuperDARN HF radars- Part 2: Assessing SuperDARN virtual height models,Ann. Geophys., 26, 517-531, 2008

Yeoman, T.K., J.A. Davies, N.M. Wade, G. Provan, and S.E. Milan, Combined CUTLASS, EISCAT and ESR observations of an isolated substorm,Ann. Geophys, 18, 1073-1087, 2000

Yeoman, T.K., L. J. Baddeley, R. S. Dhillon, T. R. Robinson, and D. M. Wright, Bistatic observations of large and small scale ULF waves in SPEAR-induced HF coherent backscatter,Ann. Geophys., 26, 2253-2263, 2008

Yeoman, T.K., P.G. Hanlon, and K.A. McWilliams, A statistical study of the location and motion of the HF radar cusp,Ann. Geophys, 20, 275-280, 2002

Yeoman, T.K., T. Mukai, and T. Yamamoto, Simultaneous ionospheric and magnetospheric observations of azimuthally propagating transient features during substorms,Ann. Geophysicae, 16, 754-763, 1998

Yukimatu, A. S, Correction to ,Geophys. Res. Lett, 30, doi:10.1029/2002GL016560, 2003

Yukimatu, A. S., and M. Tsutsumi, A new SuperDARN meteor wind measurement: Raw time series analysis method and its application to mesopause region dynamics,Geophys. Res. Lett., 29, doi:10.1029/2002GL015210, 2002

Yukimatu, A. S., H. Yamagishi and N. Sato, New sounding modes for SuperDARN HF radars,Adv. Polar Upper Atmos. Res., 15, 135-145, 2001

Yukimatu, A. S., M. Tsutsumi, H. Yamagishi and N. Sato, A new method for monitoring and removing SuperDARN radar DC offsets,Adv. Polar Upper Atmos. Res., 16, 181-192, 2002

Yus2Nj <a href=, Yus2Nj <a href=,EyZfoEJpdJlztGCemD, KkKTRUAHmHDi, hdfkalHCwNsfbEYTK, eVGsILegFKaZJYHAHm

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Zhang Q.H., Liu R.Y, Huang J.Y., Dunlop M.W., Hu H.Q., Hu Z.J., Bogdanova Y.V., Lester M., Simultaneous Cluster and CUTLASS observations of FTEs on 11 February 2004,Chinese Journal of Geophyiscs-Chinese Edition, 21, 1-9, 2008

Zhang, Q-H., R.Y. Liu, M.W. Dunlop, J.Y. Huang, H.Q. Hu, M. Lester, Y.H. Liu, Z.J. Hu, Q.Q Shi, and M.G.G.T. Taylor, Simultaneous tracking of dayside reconnection: Cluster and conjugate SuperDARN observations on 1 April 2004,Ann. Geophys., 26, 1545-1557, 2008

Zhang, Y. and L.J. Paxton, Dayside convection aligned auroral arcs,Geophys. Res. Lett., 33, L13107, doi:10.129/2006GL026388, 2006

Zhou, X.-Y., B.T. Tsurutani, G. Reeves, G. Rostoker, W. Sun, J. M. Ruohoniemi, Y. Kamide, A.T.Y. Lui, G.K. Parks, W. D. Gonzalez, and J. K. Arballo, Ring current intensification and convection-driven negative bays: Multi-satellite studies,J. Geophys. Res, 108 (A11), 1407, doi:10.1029/2003JA009881, 2003

Zou, S., L. R. Lyons, C. P. Wang, A. Boudouridis, J. M. Ruohoniemi, P. C. Anderson, P. L. Dyson, and J. C. Devlin, On the coupling between the Harang reversal evolution and substorm dynamics: a synthesis of SuperDARN, DMSP and IMAGE observations,J. Geophys. Res., 114, A01205, doi:10.1029/2008JA013449, 2009