Scientific Data - DataverseNO

K. Oksavik (2020), The University of Bergen Global Navigation Satellite System Data Collection, DataverseNO, https://doi.org/10.18710/AJ4S-X394.

Journal Publications - Google Scholar

108) D. Zhang, Q.-H. Zhang, Y.-Z. Ma, K. Oksavik, L. R. Lyons, Y.-L. Zhang, B. Nanan, Z.-Y. Xing, J. Liu, M. Hairston, and X.-Y. Wang (2021),

Solar and geomagnetic activity impact on occurrence and spatial size of cold and hot polar cap patches,

Geophysical Research Letters, 48, doi.org/10.1029/2021GL094526

107) G. Branduardi-Raymont, M. Berthomier, Y. V. Bogdanova, J. A. Carter, M. Collier, A. Dimmock, M. Dunlop, R. C. Fear, C. Forsyth, B. Hubert, E. A. Kronberg, K. M. Laundal, M. Lester, S. Milan, K. Oksavik, N. Østgaard, M. Palmroth, F. Plaschke, F. S. Porter, I. J. Rae, A. Read, A. A. Samsonov, S. Sembay, Y. Shprits, D. G. Sibeck, B. Walsh, and M. Yamauchi (2021),

Exploring solar-terrestrial interactions via multiple imaging observers,

Experimental Astronomy, doi.org/10.1007/s10686-021-09784-y

106) Y. Wang, Z. Cao, Z.-Y. Xing, Q.-H. Zhang, P. T. Jayachandran, K. Oksavik, N. Balan, and K. Shiokawa (2021),

GPS scintillations and TEC variations in association with a polar cap arc,

Journal of Geophysical Research Space Physics, 126, doi.org/10.1029/2020JA028968

105) Q.-H. Zhang, Y.-L. Zhang, C. Wang, K. Oksavik, L. R. Lyons, M. Lockwood, H.-G. Yang, B.-B. Tang, J. I. Moen, Z.-Y. Xing, Y.-Z. Ma, X.-Y. Wang, Y.-F. Ning, and L.-D. Xia (2021),

A space hurricane over the Earth's polar ionosphere,

Nature Communications, 12, 1207, doi.org/10.1038/s41467-021-21459-y

Research Highlight in Nature on 26 February 2021

Highlighted by National Geographic on 23 March 2021

Worldwide attention in news media

104) C. Moser, J. LaBelle, S. Hatch, J. I. Moen, A. Spicher, T. Takahashi, C.A. Kletzing, S. Bounds, K. Oksavik, F. Sigernes, and T. K. Yeoman (2021),

The cusp as a VLF saucer source: First rocket observations of long-duration VLF saucers on the dayside,

Geophysical Research Letters, 48, doi.org/10.1029/2020GL090747

103) L. M. Bjoland, Y. Ogawa, U. P. Løvhaug, D. A. Lorentzen, S. M. Hatch, and K. Oksavik (2021),

Electron density depletion region observed in the polar cap ionosphere,

Journal of Geophysical Research Space Physics, 126, doi.org/10.1029/2020JA028432

102) S. M. Hatch, S. Haaland, K. M. Laundal, T. Moretto, A. W. Yau, L. Bjoland, J. P. Reistad, A. Ohma, and K. Oksavik (2020),

Seasonal and hemispheric asymmetries of F-region polar cap plasma density: Swarm and CHAMP observations,

Journal of Geophysical Research Space Physics, 125, doi.org/10.1029/2020JA028084

101) K. Herlingshaw, L. J. Baddeley, K. Oksavik, and D. A. Lorentzen (2020),

A statistical study of polar cap flow channels and their IMF By dependence,

Journal of Geophysical Research Space Physics, 125, doi.org/10.1029/2020JA028359

100) Y.-Z. Ma, Q.-H. Zhang, P. T. Jayachandran, K. Oksavik, L. R. Lyons, Z.-Y. Xing, S.-Y. Zhou, M. Hairston, and Y. Wang (2020),

Statistical study of the relationship between ion upflow and field-aligned current in the topside ionosphere for both hemispheres during geomagnetic disturbed and quiet times,

Journal of Geophysical Research Space Physics, 125, doi.org/10.1029/2019JA027538

99) Q.-H. Zhang, Y.-L. Zhang, C. Wang, M. Lockwood, H.-G. Yang, B.-B. Tang, Z.-Y. Xing, K. Oksavik, L. R. Lyons, Y.-Z. Ma, Q.-G. Zong, J. I. Moen, and L.-D. Xia (2020),

Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth's magnetotail,

Proc. Natl. Acad. Sci. U.S.A., 202000614; doi.org/10.1073/pnas.2000614117

98) A. Fæhn Follestad, K. Herlingshaw, H. Ghadjari, D. J. Knudsen, K. A. McWilliams, J. I. Moen, A. Spicher, J. Wu, and K. Oksavik (2020),

Dayside field aligned current impacts on ionospheric irregularities,

Geophysical Research Letters, 47, doi.org/10.1029/2019GL086722

97) A. Spicher, K. Deshpande, Y. Jin, K. Oksavik, M. D. Zettergren, L. B. N. Clausen, J. I. Moen, M. R. Hairston, and L. J. Baddeley (2020),

On the production of ionospheric irregularities via Kelvin-Helmholtz instability associated with cusp flow channels,

Journal of Geophysical Research Space Physics, 125, doi.org/10.1029/2019JA027734

96) L. A. Jenner, A. G. Wood, G. D. Dorrian, K. Oksavik, T. K. Yeoman, A. R. Fogg, and A. J. Coster (2020),

Plasma density gradients at the edge of polar ionospheric holes: the absence of phase scintillation,

Annales Geophysicae, 38, 575-590, doi.org/10.5194/angeo-38-575-2020

95) M. R. Lessard, B. Fritz, B. Sadler, I. Cohen, D. Kenward, N. Godbole, J. H. Clemmons, J. H. Hecht, K. A. Lynch, M. Harrington, T. M. Roberts, D. Hysell, G. Crowely, F. Sigernes, M. Syrjäsuo, P. Ellingson, N. Partamies, J. Moen, L. Clausen, K. Oksavik, and T. Yeoman (2020),

Overview of the Rocket Experiment for Neutral Upwelling Sounding Rocket 2 (RENU2),

Geophysical Research Letters, 47, doi.org/10.1029/2018GL081885

High attention in news media

94) K. Herlingshaw, L. J. Baddeley, K. Oksavik, D. A. Lorentzen, and E. C. Bland (2019),

A study of automatically detected flow channels in the polar cap ionosphere,

Journal of Geophysical Research Space Physics, 124, 9430-9447, doi.org/10.1029/2019JA026916 — PDF

93) Y. Jin, J. I. Moen, A. Spicher, K. Oksavik, W. J. Miloch, L. B. N. Clausen, M. Pozoga, and Y. Saito (2019),

Simultaneous Rocket and Scintillation Observations of Plasma Irregularities associated with a Reversed Flow Event in the Cusp Ionosphere,

Journal of Geophysical Research Space Physics, 124, 7098-7111, doi.org/10.1029/2019JA026942 — PDF

92) D.-S. Han, T. Xu, Y. Jin, K. Oksavik, X.-C. Chen, J.-J. Liu, Q.-H. Zhang, L. Baddeley, and K. Herlingshaw (2019),

Observational evidence for throat aurora being associated with magnetopause reconnection,

Geophysical Research Letters, 46, 7113-7120, doi.org/10.1029/2019GL083593 — PDF

91) J. P. Reistad, K. M. Laundal, N. Østgaard, A. Ohma, S. Haaland, K. Oksavik, and S. E. Milan (2019),

Separation and quantification of ionospheric convection sources: 1. A new technique,

Journal of Geophysical Research Space Physics, 124, 6343-6357, doi.org/10.1029/2019JA026634 — PDF

90) J. P. Reistad, K. M. Laundal, N. Østgaard, A. Ohma, E. G. Thomas, S. Haaland, K. Oksavik, and S. E. Milan (2019),

Separation and quantification of ionospheric convection sources: 2. The dipole tilt angle influence on reverse convection cells during northward IMF,

Journal of Geophysical Research Space Physics, 124, 6182-6194, doi.org/10.1029/2019JA026641 — PDF

89) B. S. R. Kunduri, J. B. H. Baker, J. M. Ruohoniemi, S. Sazykin, K. Oksavik, M. Maimaiti, P. J. Chi, and M. J. Engebretson (2018),

Recent developments on inner magnetosphere-ionosphere convection,

Journal of Geophysical Research Space Physics, 123, 7276-7282, doi.org/10.1029/2018JA025914 — PDF

88) Z. Katamzi-Joseph, A. L. Aruliah, K. Oksavik, J. B. Habarulema, K. Kauristie, and M. J. Kosch (2018),

Multi-instrument observations of large-sale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard,

Advances in Space Research, 63, 270-281, doi.org/10.1016/j.asr.2018.08.042 — PDF

87) Y. Jin, and K. Oksavik (2018),

GPS scintillations and losses of signal lock at high latitudes during the 2015 St. Patrick's Day storm,

Journal of Geophysical Research Space Physics, 123, 7943-7957, doi.org/10.1029/2018JA025933 — PDF

86) B. S. R. Kunduri, J. B. H. Baker, J. M. Ruohoniemi, N. Nishitani, K. Oksavik, P. J. Erickson, A. J. Coster, S. G. Shepherd, W. A. Bristow, and E. S. Miller (2018),

A new empirical model of the sub-auroral polarization stream,

Journal of Geophysical Research Space Physics, 123, 7342-7357, doi.org/10.1029/2018JA025690 — PDF

85) Y.-Z. Ma, Q.-H. Zhang, Z.-Y. Xing, R. A. Heelis, K. Oksavik, and Y. Wang (2018),

The ion/electron temperature characteristics of polar cap classical and hot patches and their influence on ion upflow,

Geophysical Research Letters, 45, 8072-8080, doi.org/10.1029/2018GL079099 — PDF

84) N. K. Kwagala, K. Oksavik, D. A. Lorentzen, M. G. Johnsen, and K. M. Laundal (2018),

Seasonal and Solar Cycle Variations of Thermally Excited 630.0 nm Emissions in the Polar Ionosphere,

Journal of Geophysical Research Space Physics, 123, 7029-7039, doi.org/10.1029/2018JA025477 — PDF

83) J. P. Reistad, N. Østgaard, K. M. Laundal, A. Ohma, K. Snekvik, P. Tenfjord, A. Grocott, K. Oksavik, S. E. Milan, and S. Haaland (2018),

Observations of Asymmetries in Ionospheric Return Flow During Different Levels of Geomagnetic Activity,

Journal of Geophysical Research Space Physics, 123, 4638-4651, doi.org/10.1029/2017JA025051 — PDF

82) N. K. Kwagala, K. Oksavik, D. A. Lorentzen, and M. G. Johnsen (2018),

How often do thermally excited 630.0 nm emissions occur in the polar ionosphere?,

Journal of Geophysical Research Space Physics, 123, 698-710, doi.org/10.1002/2017JA024744 — PDF

81) I. Mann, K. Kauristi, R. Bamford, I. McCrea, J. Moen, K. Oksavik, M. Yamauchi, M. J. Gullikstad, and E. Turunen (2017),

Challenges and Strategic Research Plans for Earth and Heliosphere: Research Infrastructures, Projects and Initiatives,

Proceedings of the International Astronomical Union, 13(S335), 219-225. doi.org/10.1017/S1743921318000571 — PDF

80) D. Summers, R. Shi, M. J. Engebretson, K. Oksavik, J. W. Manweiler, and D. G. Mitchell (2017),

Energetic proton spectra measured by the Van Allen Probes,

Journal of Geophysical Research Space Physics, 122, 10129-10144, doi.org/10.1002/2017JA024484 — PDF

79) Y. Jin, J. I. Moen, K. Oksavik, A. Spicher, L. B. N. Clausen, and W. J. Miloch (2017),

GPS scintillations associated with cusp dynamics and polar cap patches,

Journal of Space Weather and Space Climate, 7, A23, doi.org/10.1051/swsc/2017022 — PDF

78) L. J. Baddeley, D. A. Lorentzen, N. Partamies, W. Denig, V. A. Pilipenko, K. Oksavik, X. Chen, and Y. Zhang (2017),

Equatorward Propagating Auroral Arcs Driven by ULF Wave Activity: Multipoint Ground and Space Based Observations in the Dusk Sector Auroral Oval,

Journal of Geophysical Research Space Physics, 122, 5591-5605, doi.org/10.1002/2016JA023427 — PDF

77) H. Kim, M. R. Lessard, S. L. Jones, K. A. Lynch, P. A. Fernandes, A. L. Aruliah, M. J. Engebretson, J. I. Moen, K. Oksavik, A. G. Yahnin, and T. K. Yeoman (2017),

Simultaneous Observations of Traveling Convection Vortices: Ionosphere-Thermosphere Coupling,

Journal of Geophysical Research Space Physics, 122, 4943-4959, doi.org/10.1002/2017JA023904 — PDF

76) X.-C. Chen, D.-S. Han, D. A. Lorentzen, K. Oksavik, J. I. Moen, and L. J. Baddeley (2017),

Dynamic Properties of Throat Aurora Revealed by Simultaneous Ground and Satellite Observations,

Journal of Geophysical Research Space Physics, 122, 3469-3486, doi.org/10.1002/2016JA023033 — PDF

75) N. K. Kwagala, K. Oksavik, D. A. Lorentzen, and M.G. Johnsen (2017),

On the contribution of thermal excitation to the total 630.0 nm emissions in the northern cusp ionosphere,

Journal of Geophysical Research Space Physics, 122, 1234-1245, doi.org/10.1002/2016JA023366 — PDF

74) P. Prikryl, R. Ghoddousi-Fard, J. M. Weygand, A. Viljanen, M. Connors, D. W. Danskin, P. T. Jayachandran, K. S. Jacobsen, Y. L. Andalsvik, E. G. Thomas, J. M. Ruohoniemi, T. Durgonics, K. Oksavik, Y. Zhang, E. Spanswick, M. Aquino, and V. Sreeja (2016),

GPS phase scintillation at high latitudes during the geomagnetic storm of 17-18 March 2015,

Journal of Geophysical Research Space Physics, 121, 10448-10465, doi.org/10.1002/2016JA023171 — PDF

73) C. van der Meeren, K. Oksavik, D. A. Lorentzen, L. J. Paxton, and L. B. N. Clausen (2016),

Scintillation and irregularities from the nightside part of a sun-aligned polar cap arc,

Journal of Geophysical Research Space Physics, 121, 5723-5736, doi.org/10.1002/2016JA022708 — PDF

72) X.-C. Chen, D. A. Lorentzen, J. I. Moen, K. Oksavik, L. J. Baddeley, and M. Lester (2016),

F-region ionosphere effects on the mapping accuracy of SuperDARN HF radar echoes,

Radio Science, 51, 490-506, doi.org/10.1002/2016RS005957 — PDF

71) Y. Jin, J. I. Moen, W. J. Miloch, L. B. N. Clausen, and K. Oksavik (2016),

Statistical study of the GNSS phase scintillation associated with two types of auroral blobs,

Journal of Geophysical Research Space Physics, 121, 4679-4697, doi.org/10.1002/2016JA022613 — PDF

70) J. P. Reistad, N. Østgaard, P. Tenfjord, K. M. Laundal, K. Snekvik, S. Haaland, S. E. Milan, K. Oksavik, H. U. Frey, and A. Grocott (2016),

Dynamic effects of restoring footpoint symmetry on closed magnetic field-lines,

Journal of Geophysical Research Space Physics, 121, 3963-3977, doi.org/10.1002/2015JA022058 — PDF

69) C. van der Meeren, K. Oksavik, D. A. Lorentzen, M. T. Rietveld, and L. B. N. Clausen (2015),

Severe and localized GNSS scintillation at the poleward edge of the nightside auroral oval during intense substorm aurora,

Journal of Geophysical Research Space Physics, 120, 10607-10621, doi.org/10.1002/2015JA021819 — PDF

68) M. I. Sandanger, L.-K. Glesnes Ødegaard, H. Nesse Tyssøy, J. Stadsnes, F. Søraas, K. Oksavik, and K. Aarsnes (2015),

In flight calibration of NOAA POES proton detectors - derivation of the MEPED correction factors,

Journal of Geophysical Research Space Physics, 120, 9578-9593, doi.org/10.1002/2015JA021388 — PDF

67) I. J. Cohen, M. R. Lessard, R. H. Varney, K. Oksavik, M. Zettergren, and K. A. Lynch (2015),

Ion Upflow Dependence on Ionospheric Density and Solar Photoionization,

Journal of Geophysical Research Space Physics, 120, 10039-10052, doi.org/10.1002/2015JA021523 — PDF

66) X.-C. Chen, D. A. Lorentzen, J. I. Moen, K. Oksavik, and L. J. Baddeley (2015),

Simultaneous ground-based optical and HF radar observations of the ionospheric footprint of the open/closed field line boundary along the geomagnetic meridian,

Journal of Geophysical Research Space Physics, 120, 9859-9874, doi.org/10.1002/2015JA021481 — PDF

65) K. Oksavik, C. van der Meeren, D. A. Lorentzen, L. J. Baddeley, and J. Moen (2015),

Scintillation and loss of lock from poleward moving auroral forms in the cusp ionosphere,

Journal of Geophysical Research Space Physics, 120, 9161-9175, doi.org/10.1002/2015JA021528 — PDF

64) I. McCrea, A. Aikio, L. Alfonsi, E. Belova, S. Buchert, M. Clilverd, N. Engler, B. Gustavsson, C. Heinselman, J. Kero, M. Kosch, H. Lamy, T. Leyser, Y. Ogawa, K. Oksavik, A. Pellinen-Wannberg, F. Pitout, M. Rapp, I. Stanislawska, and J. Vierinen (2015),

The science case for the EISCAT_3D radar,

Progress in Earth and Planetary Science, 2:21, doi.org/10.1186/s40645-015-0051-8 — PDF

63) M. J. Engebretson, J. L. Posch, J. R. Wygant, C. A. Kletzing, M. R. Lessard, C.-L. Huang, H. E. Spence, C. W. Smith, H. J. Singer, Y. Omura, R. B. Horne, G. D. Reeves, D. N. Baker, M. Gkioulidou, K. Oksavik, I. R. Mann, T. Raita, and K. Shiokawa (2015),

Van Allen probes, NOAA, GOES and ground observations of an intense EMIC wave event extending over 12 hours in MLT,

Journal of Geophysical Research Space Physics, 120, 5465-5488, doi.org/10.1002/2015JA021227 — PDF

62) J. P. Reistad, N. Østgaard, K. M. Laundal, S. Haaland, P. Tenfjord, K. Snekvik, K. Oksavik, and S. E. Milan (2014),

Intensity asymmetries in the dusk sector of the poleward auroral oval due to IMF Bx,

Journal of Geophysical Research Space Physics, 119, 9497-9507, doi.org/10.1002/2014JA020216 — PDF

61) C. van der Meeren, K. Oksavik, D. Lorentzen, J. I. Moen, V. Romano (2014),

GPS scintillation and irregularities at the front of an ionization toungue in the nightside polar ionosphere,

Journal of Geophysical Research Space Physics, 119, 8624-8636, doi.org/10.1002/2014JA020114 — PDF

Highlighted on journal frontpage

60) Y. Nishimura, L. R. Lyons, Y. Zou, K. Oksavik, J. I. Moen, L. B. Clausen, E. F. Donovan, V. Angelopoulos, K. Shiokawa, J. M. Ruohoniemi, N. Nishitani, K. A. McWilliams, and M. Lester (2014),

Day-night coupling by a localized flow channel visualized by polar cap patch propagation,

Geophysical Research Letters, 41, 3701-3709, doi.org/10.1002/2014GL060301 — PDF

59) H. C. Carlson, K. Oksavik, and J. I. Moen (2013),

Thermally excited 630.0 nm O(¹D) emission in the cusp: A frequent high-altitude transient signature,

Journal of Geophysical Research Space Physics, 118, doi.org/10.1002/jgra.50516 — PDF

58) J. P. Reistad, N. Østgaard, K. M. Laundal, and K. Oksavik (2013),

On the non-conjugacy of nightside aurora and their generator mechanisms,

Journal of Geophysical Research Space Physics, 118, doi.org/10.1002/jgra.50300 — PDF

57) A. J. Ribeiro, J. M. Ruohoniemi, P. V. Ponomarenko, L. B. N. Clausen, J. B. H. Baker, R. A. Greenwald, K. Oksavik, and S. de Larquier (2013),

A comparison of SuperDARN ACF fitting methods,

Radio Science, 48, doi.org/10.1002/rds.20031 — PDF

56) M. J. Engebretson, T. K. Yeoman, K. Oksavik, F. Søraas, F. Sigernes, J. I. Moen, M. G. Johnsen, V. A. Pilipenko, J. L. Posch, M. R. Lessard, B. Lavraud, M. D. Hartinger, L. B. N. Clausen, T. Raita, and C. Stolle (2013),

Multi-instrument observations from Svalbard of a traveling convection vortex, electromagnetic ion cyclotron wave burst, and proton precipitation associated with a bow shock instability,

Journal of Geophysical Research Space Physics, 118, doi.org/10.1002/jgra.50291 — PDF

55) J. Moen, K. Oksavik, L. Alfonsi, Y. Daabakk, V. Romano, and L. Spogli (2013),

Space weather challenges of the polar cap ionosphere,

Journal of Space Weather and Space Climate, 3, A02, doi.org/10.1051/swsc/2013025 — PDF

54) K. Oksavik, J. Moen, M. Lester, T. A. Bekkeng, and J. K. Bekkeng (2012),

In-situ measurements of plasma irregularity growth in the cusp ionosphere,

Journal of Geophysical Research, 117, A11301, doi.org/10.1029/2012JA017835 — PDF

53) M. A. Young, M. Lessard, M. Engebretson, J. R. Woodroffe, and K. Oksavik (2012),

Spectral enhancements associated with Pi1B events observed at high latitude,

Journal of Geophysical Research, 117, A09314, doi.org/10.1029/2012JA017940 — PDF

52) R. C. Fear, S. E. Milan, and K. Oksavik (2012),

Determining the axial direction of high-shear flux transfer events: Implications for models of FTE structure,

Journal of Geophysical Research, 117, A09220, doi.org/10.1029/2012JA017831 — PDF

51) E. J. Lund, M. R. Lessard, F. Sigernes, D. A. Lorentzen, K. Oksavik, P. M. Kintner, K. A. Lynch, D. H. Huang, B. C. Zhang, H. G. Yang, and Y. Ogawa (2012),

Electron temperature in the cusp as measured with the SCIFER-2 sounding rocket,

Journal of Geophysical Research, 117, A06326, doi.org/10.1029/2011JA017404 — PDF

50) J. Moen, K. Oksavik, T. Abe, M. Lester, Y. Saito, T. A. Bekkeng, and K. S. Jacobsen (2012),

First in-situ measurements of HF radar echoing targets,

Geophysical Research Letters, 39, L07104, doi.org/10.1029/2012GL051407 — PDF

49) T. D. Borisova, N. F. Blagoveshchenskaya, A. S. Kalishin, K. Oksavik, L. Baddeley, and T. K. Yeoman (2012),

Effects of modification of the polar ionosphere with high-power short-wave extraordinary-mode HF waves produced by the SPEAR heating facility,

Radiophysics and Quantum Electronics, 55, 126-141, doi.org/10.1007/s11141-012-9353-5 — PDF

48) F. Sigernes, M. Dyrland, P. Brekke, E. K. Gjengedal, S. Chernouss, D. A. Lorentzen, K. Oksavik, and C. S. Deehr (2011),

Real time auroral oval forecasting - SvalTrackII,

Optica Pura y Aplicada (OPA), 44, 599-603 — PDF

47) F. Sigernes, M. Dyrland, P. Brekke, S. Chernouss, D. A. Lorentzen, K. Oksavik, and C. S. Deehr (2011),

Two methods to forecast auroral displays,

Journal of Space Weather and Space Climate, 1, A03, doi.org/10.1051/swsc/2011003 — PDF

46) K. Oksavik, J. I. Moen, E. H. Rekaa, H. C. Carlson, and M. Lester (2011),

Reversed flow events in the cusp ionosphere detected by SuperDARN HF radars,

Journal of Geophysical Research, 116, A12303, doi.org/10.1029/2011JA016788 — PDF

45) N. A. Frissell, J. B. H. Baker, J. M. Ruohoniemi, L. B. N. Clausen, Z. C. Kale, I. J. Rae, L. Kepko, K. Oksavik, R. A. Greenwald, and M. L. West (2011),

First radar observations in the vicinity of the plasmapause of pulsed ionospheric flows generated by bursty bulk flows,

Geophysical Research Letters, 38, L01103, doi.org/10.1029/2010GL045857 — PDF

44) D. A. Lorentzen, J. Moen, K. Oksavik, F. Sigernes, Y. Saito, and M. G. Johnsen (2010),

In situ measurements of a newly created polar cap patch,

Journal of Geophysical Research, 115, A12323, doi.org/10.1029/2010JA015710 — PDF

43) K. Oksavik, V. L. Barth, J. Moen, and M. Lester (2010),

On the entry and transit of high-density plasma across the polar cap,

Journal of Geophysical Research, 115, A12308, doi.org/10.1029/2010JA015817 — PDF

42) J. K. Burchill, D. J. Knudsen, J. H. Clemmons, K. Oksavik, R. F. Pfaff, C. T. Steigies, A. W. Yau, and T. K. Yeoman (2010),

Thermal ion upflow in the cusp ionosphere and its dependence on soft electron energy flux,

Journal of Geophysical Research, 115, A05206, doi.org/10.1029/2009JA015006 — PDF

41) Y. Ogawa, I. Häggström, S. C. Buchert, K. Oksavik, S. Nozawa, M. Hirahara, A. P. van Eyken, T. Aso, and R. Fujii (2009),

On the source of the polar wind in the polar topside ionosphere: First results from the EISCAT Svalbard radar,

Geophysical Research Letters, 36, L24103, doi.org/10.1029/2009GL041501 — PDF

40) M. I. Sandanger, F. Søraas, M. Sørbø, K. Aarsnes, K. Oksavik, and D. S. Evans (2009),

Relativistic electron losses related to EMIC waves during CIR and CME storms,

Journal of Atmospheric and Solar-Terrestrial Physics, 71, 1126-1144, doi.org/10.1016/j.jastp.2008.07.006 — PDF

39) P. C. Brandt, Y. Zheng, T. S. Sotirelis, K. Oksavik, and F. J. Rich (2008),

The linkage between the ring current and the ionosphere system,

In "Midlatitude ionospheric dynamics and disturbances", edited by P. M. Kintner, A. J. Coster, T. Fuller-Rowell, A. J. Mannucci, M. Mendillo, and R. Heelis,

Geophysical Monograph Series, 181, 135-143, doi.org/10.1029/181GM13 — PDF

38) H. C. Carlson, K. Oksavik, and J. Moen (2008),

On a new process for cusp irregularity production,

Annales Geophysicae, 26, 2871-2885, doi.org/10.5194/angeo-26-2871-2008 — PDF

37) J. Moen, Y. Rinne, H. C. Carlson, K. Oksavik, R. Fujii, and H. Opgenoorth (2008),

On the relationship between thin Birkeland current arcs and reversed flow channels in the winter cusp/cleft ionosphere,

Journal of Geophysical Research, 113, A09220, doi.org/10.1029/2008JA013061 — PDF

36) R. A. Greenwald, K. Oksavik, R. Barnes, J. M. Ruohoniemi, J. Baker, and E. R. Talaat (2008),

First radar measurements of ionospheric electric fields at sub-second temporal resolution,

Geophysical Research Letters, 35, L03111, doi.org/10.1029/2007GL032164 — PDF

35) M. Sandanger, F. Søraas, K. Aarsnes, K. Oksavik, and D. S. Evans (2007),

Loss of relativistic electrons: Evidence for pitch angle scattering by electromagnetic ion cyclotron waves excited by unstable ring current protons,

Journal of Geophysical Research, 112, A12213, doi.org/10.1029/2006JA012138 — PDF

34) Y. Rinne, J. Moen, K. Oksavik, and H. C. Carlson (2007),

Reversed flow events in the winter cusp ionosphere observed by the European Incoherent Scatter (EISCAT) Svalbard radar,

Journal of Geophysical Research, 112, A10313, doi.org/10.1029/2007JA012366 — PDF

33) J. W. Gjerloev, R. A. Greenwald, C. L. Waters, K. Takahashi, D. Sibeck, K. Oksavik, R. Barnes, J. Baker, and J. M. Ruohoniemi (2007),

Observations of Pi2 pulsations by the Wallops HF radar in association with substorm expansion,

Geophysical Research Letters, 34, L20103, doi.org/10.1029/2007GL030492 — PDF

32) T. Pedersen, E. Mishin, and K. Oksavik (2007),

Observations of structured optical emissions and particle precipitation equatorward of the traditional auroral oval,

Journal of Geophysical Research, 112, A10208, doi.org/10.1029/2007JA012299 — PDF

31) C. Simon, J. Lilensten, J. Moen, J. M. Holmes, Y. Ogawa, K. Oksavik, and W. F. Denig (2007),

TRANS4: a new coupled electron/proton transport code - comparison to observations above Svalbard using ESR, DMSP and optical measurements,

Annales Geophysicae, 25 (3), 661-673, doi.org/10.5194/angeo-25-661-2007 — PDF

30) D. A. Lorentzen, P. M. Kintner, J. Moen, F. Sigernes, K. Oksavik, Y. Ogawa, and J. Holmes (2007),

Pulsating dayside aurora in relation to ion upflow events during a northward interplanetary magnetic field (IMF) dominated by a strongly negative IMF By,

Journal of Geophysical Research, 112, A03301, doi.org/10.1029/2006JA011757 — PDF

29) J. B. H. Baker, R. A. Greenwald. J. M. Ruohoniemi, K. Oksavik, J. W. Gjerloev, L. J. Paxton, and M. R. Hairston (2007),

Observations of ionospheric convection from the Wallops SuperDARN radar at middle latitudes,

Journal of Geophysical Research, 112, A01303, doi.org/10.1029/2006JA011982 — PDF

28) R. A. Greenwald, K. Oksavik, P. J. Erickson, F. D. Lind, J. M. Ruohoniemi, J. B. H. Baker, and J. W. Gjerloev (2006),

Identification of the temperature gradient instability as the source of decameter-scale ionospheric irregularities on plasmapause field lines,

Geophysical Research Letters, 33, L18105, doi.org/10.1029/2006GL026581 — PDF

27) J. Moen, H. C. Carlson, K. Oksavik, C. P. Nielsen, S. E. Pryse, H. R. Middleton, I. W. McCrea, and P. Gallop (2006),

EISCAT observations of plasma patches at sub-auroral cusp latitudes,

Annales Geophysicae, 24 (9), 2363-2374, doi.org/10.5194/angeo-24-2363-2006 — PDF

26) S. E. Pryse, R. W. Sims, J. Moen, and K. Oksavik (2006),

Ionospheric signatures of the low-latitude boundary layer under conditions of northward IMF and small clock angle,

Annales Geophysicae, 24 (8), 2169-2178, doi.org/10.5194/angeo-24-2169-2006 — PDF

25) K. Oksavik, R. A. Greenwald, J. M. Ruohoniemi, M. R. Hairston, L. J. Paxton, J. B. H. Baker, J. W. Gjerloev, and R. J. Barnes (2006),

First observations of the temporal/spatial variation of the sub-auroral polarization stream from the SuperDARN Wallops HF radar,

Geophysical Research Letters, 33, L12104, doi.org/10.1029/2006GL026256 — PDF

24) K. Oksavik, J. M. Ruohoniemi, R. A. Greenwald, J. B. H. Baker, J. Moen, H. C. Carlson, T. K. Yeoman, and M. Lester (2006),

Observations of isolated polar cap patches by the European Incoherent Scatter (EISCAT) Svalbard and Super Dual Auroral Radar Network (SuperDARN) Finland radars,

Journal of Geophysical Research, 111, A05310, doi.org/10.1029/2005JA011400 — PDF

23) M. Sørbø, F. Søraas, K. Aarsnes, K. Oksavik, and D. S. Evans (2006),

Latitude distribution of vertically precipitating energetic neutral atoms observed at low altitudes,

Geophysical Research Letters, 33, L06108, doi.org/10.1029/2005GL025240 — PDF

22) H. C. Carlson, J. Moen, K. Oksavik, C. P. Nielsen, I. W. McCrea, T. R. Pedersen, and P. Gallop (2006),

Direct observations of injection events of subauroral plasma into the polar cap,

Geophysical Research Letters, 33, L05103, doi.org/10.1029/2005GL025230 — PDF

Highlighted by the Editor

21) A. Aksnes, J. Stadsnes, N. Østgaard, G. A. Germany, K. Oksavik, R. R. Vondrak, A. Brekke, and U. P. Løvhaug (2006),

Height profiles of the ionospheric electron density derived using space-based remote sensing of UV and X ray emissions and EISCAT radar data: A ground-truth experiment,

Journal of Geophysical Research, 111, A02301, doi.org/10.1029/2005JA011331 — PDF

20) M. Lockwood, J. Moen, A. P. van Eyken, J. A. Davies, K. Oksavik, and I. W. McCrea (2005),

Motion of the dayside polar cap boundary during substorm cycles: I. Observations of pulses in the magnetopause reconnection rate,

Annales Geophysicae, 23 (11), 3495-3511, doi.org/10.5194/angeo-23-3495-2005 — PDF

19) M. Lockwood, J. A. Davies, J. Moen, A. P. van Eyken, K. Oksavik, I. W. McCrea, and M. Lester (2005),

Motion of the dayside polar cap boundary during substorm cycles: II. Generation of poleward-moving events and polar cap patches by pulses in the magnetopause reconnection rate,

Annales Geophysicae, 23 (11), 3513-3532, doi.org/10.5194/angeo-23-3513-2005 — PDF

18) K. Oksavik, J. Moen, H. C. Carlson, R. A. Greenwald, S. E. Milan, M. Lester, W. F. Denig, and R. J. Barnes (2005),

Multi-instrument mapping of the small-scale flow dynamics related to a cusp auroral transient,

Annales Geophysicae, 23 (7), 2657-2670, doi.org/10.5194/angeo-23-2657-2005 — PDF

17) M. I. Sandanger, F. Søraas, K. Aarsnes, K. Oksavik, D. S. Evans, and M. S. Greer (2005),

Proton injections into the ring current associated with Bz variations during HILDCAA events,

In "The Inner Magnetosphere: Physics and Modeling", edited by T. I. Pulkkinen, N. A. Tsyganenko, and R. H. W. Friedel,

Geophysical Monograph Series, 155, 249-255, doi.org/10.1029/155GM26 — PDF

16) F. Søraas, K. Aarsnes, D. V. Carlsen, K. Oksavik, and D. S. Evans (2005),

Ring current behavior as revealed by energetic proton precipitation,

In "The Inner Magnetosphere: Physics and Modeling", edited by T. I. Pulkkinen, N. A. Tsyganenko, and R. H. W. Friedel,

Geophysical Monograph Series, 155, 237-247, doi.org/10.1029/155GM25 — PDF

15) N. Østgaard, J. Moen, S. B. Mende, H. U. Frey, T. J. Immel, P. Gallop, K. Oksavik, and M. Fujimoto (2005),

Estimates of magnetotail reconnection rate based on IMAGE FUV and EISCAT measurements,

Annales Geophysicae, 23 (1), 123-134, doi.org/10.5194/angeo-23-123-2005 — PDF

14) J. Moen, M. Lockwood, K. Oksavik, H. C. Carlson, W. F. Denig, A. P. van Eyken, and I. W. McCrea (2004),

The dynamics and relationships of precipitation, temperature and convection boundaries in the dayside auroral ionosphere,

Annales Geophysicae, 22 (6), 1973-1987, doi.org/10.5194/angeo-22-1973-2004 — PDF

13) J. Moen, K. Oksavik, and H. C. Carlson (2004),

On the relationship between ion upflow events and cusp auroral transients,

Geophysical Research Letters, 31, L11808, doi.org/10.1029/2004GL020129 — PDF

12) K. Oksavik, J. Moen, and H. C. Carlson (2004),

High-resolution observations of the small-scale flow pattern associated with a poleward moving auroral form in the cusp,

Geophysical Research Letters, 31, L11807, doi.org/10.1029/2004GL019838 — PDF

Highlighted by the Editor

11) H. C. Carlson Jr., K. Oksavik, J. Moen, and T. Pedersen (2004),

Ionospheric patch formation: Direct measurements of the origin of a polar cap patch,

Geophysical Research Letters, 31, L08806, doi.org/10.1029/2003GL018166 — PDF

10) K. Oksavik, F. Søraas, J. Moen, R. Pfaff, J. A. Davies, and M. Lester (2004),

Simultaneous optical, CUTLASS HF radar, and FAST spacecraft observations: Signatures of boundary layer processes in the cusp,

Annales Geophysicae, 22 (2), 511-525, doi.org/10.5194/angeo-22-511-2004 — PDF

9) F. Søraas, K. Aarsnes, K. Oksavik, M. I. Sandanger, D. S. Evans, and M. S. Greer (2004),

Evidence for particle injection as the cause of Dst reduction during HILDCAA events,

Journal of Atmospheric and Solar-Terrestrial Physics, 66, 177-186, doi.org/10.1016/j.jastp.2003.05.001 — PDF

8) Q.-G. Zong, T. A. Fritz, H. Spence, K. Oksavik, Z.-Y. Pu, A. Korth, and P. W. Daly (2004),

Energetic particle sounding of the magnetopause: A contribution by Cluster/RAPID,

Journal of Geophysical Research, 109, A04207, doi.org/10.1029/2003JA009929 — PDF

7) S. E. Milan, M. Lester, S. W. H. Cowley, K. Oksavik, M. Brittnacher, R. A. Greenwald, G. Sofko, and J.-P. Villain (2003),

Variation in polar cap area during two substorm cycles,

Annales Geophysicae, 21 (5), 1121-1140, doi.org/10.5194/angeo-21-1121-2003 — PDF

6) F. Søraas, K. Oksavik, K. Aarsnes, D. S. Evans, and M. S. Greer (2003),

Storm time equatorial belt - an "image" of RC behavior,

Geophysical Research Letters, 30 (2), 1052, doi.org/10.1029/2002GL015636 — PDF

5) H. C. Carlson, K. Oksavik, J. Moen, A. P. van Eyken, and P. Guio (2002),

ESR mapping of polar-cap patches in the dark cusp,

Geophysical Research Letters, 29 (10), 1386, doi.org/10.1029/2001GL014087 — PDF

4) K. Oksavik, T. A. Fritz, Q.-G. Zong, F. Søraas, and B. Wilken (2002),

Three-dimensional energetic ion sounding of the magnetopause using Cluster/RAPID,

Geophysical Research Letters, 29 (9), 1347, doi.org/10.1029/2001GL014265 — PDF

3) F. Søraas, K. Aarsnes, K. Oksavik, and D. S. Evans (2002),

Ring current intensity estimated from low-altitude proton observations,

Journal of Geophysical Research, 107 (A7), 1149, doi.org/10.1029/2001JA000123 — PDF

2) J. Moen, J. A. Holtet, A. Pedersen, B. Lybekk, K. Svenes, K. Oksavik, W. F. Denig, E. Lucek, F. Søraas, and M. André (2001),

Cluster boundary layer measurements and optical observations at magnetically conjugate sites,

Annales Geophysicae, 19 (10-12), 1655-1668, doi.org/10.5194/angeo-19-1655-2001 — PDF

1) K. Oksavik, F. Søraas, J. Moen, and W. J. Burke (2000),

Optical and particle signatures of magnetospheric boundary layers near magnetic noon: Satellite and ground-based observations,

Journal of Geophysical Research, 105 (A12), 27555-27568, doi.org/10.1029/1999JA000237 — PDF

Doctor and Master Thesis

K. Oksavik,

A study of temporal and spatial variations in the polar cusp/cleft region using multi-instrument techniques, Doctor Scientiarum Thesis, ISBN 82-497-0127-5, Department of Physics, University of Bergen, 2002.

DoctorThesis.pdf (9.4 MB)

K. Oksavik,

High-Latitude Boundary Phenomena and Magnetospheric Processes During the January 9-12 1997 CME Event: NOAA-12, Wind and Groundbased Observations, Candidatus Scientiarum Thesis, Department of Physics, University of Bergen, 1998.

MasterThesis.pdf (21.2 MB)