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David Knudsen
David Knudsen
Professor of Physics and Astronomy, University of Calgary
在 ucalgary.ca 的电子邮件经过验证
标题
引用次数
引用次数
年份
Swarm–an Earth observation mission investigating geospace
E Friis-Christensen, H Lühr, D Knudsen, R Haagmans
Advances in Space Research 41 (1), 210-216, 2008
3982008
Thermal ion imagers and Langmuir probes in the Swarm electric field instruments
DJ Knudsen, JK Burchill, SC Buchert, AI Eriksson, R Gill, JE Wahlund, ...
Journal of Geophysical Research: Space Physics 122 (2), 2655-2673, 2017
2282017
Broadband ELF plasma emission during auroral energization: 1. Slow ion acoustic waves
JE Wahlund, AI Eriksson, B Holback, MH Boehm, J Bonnell, PM Kintner, ...
Journal of Geophysical Research: Space Physics 103 (A3), 4343-4375, 1998
1501998
Correlation between core ion energization, suprathermal electron bursts, and broadband ELF plasma waves
DJ Knudsen, JH Clemmons, JE Wahlund
Journal of Geophysical Research: Space Physics 103 (A3), 4171-4186, 1998
1301998
Calibration and validation of Swarm plasma densities and electron temperatures using ground-based radars and satellite radio occultation measurements
L Lomidze, DJ Knudsen, J Burchill, A Kouznetsov, SC Buchert
Radio Science 53 (1), 15-36, 2018
1192018
New science in plain sight: Citizen scientists lead to the discovery of optical structure in the upper atmosphere
EA MacDonald, E Donovan, Y Nishimura, NA Case, DM Gillies, ...
Science advances 4 (3), eaaq0030, 2018
1162018
Alfvén waves in the auroral ionosphere: A numerical model compared with measurements
DJ Knudsen, MC Kelley, JF Vickrey
Journal of Geophysical Research: Space Physics 97 (A1), 77-90, 1992
1161992
Poynting flux measurements on a satellite: A diagnostic tool for space research
MC Kelley, DJ Knudsen, JF Vickrey
Journal of Geophysical Research: Space Physics 96 (A1), 201-207, 1991
1141991
Width and structure of mesoscale optical auroral arcs
DJ Knudsen, EF Donovan, LL Cogger, B Jackel, WD Shaw
Geophysical Research Letters 28 (4), 705-708, 2001
1112001
Distinguishing Alfvén waves from quasi‐static field structures associated with the discrete aurora: Sounding rocket and HILAT satellite measurements
DJ Knudsen, MC Kelley, GD Earle, JF Vickrey, M Boehm
Geophysical Research Letters 17 (7), 921-924, 1990
951990
Swarm in situ observations of F region polar cap patches created by cusp precipitation
LV Goodwin, B Iserhienrhien, DM Miles, S Patra, C van der Meeren, ...
Geophysical Research Letters 42 (4), 996-1003, 2015
792015
Spatial modulation of electron energy and density by nonlinear stationary inertial Alfvén waves
DJ Knudsen
Journal of Geophysical Research: Space Physics 101 (A5), 10761-10772, 1996
721996
Observation of polar cap patches and calculation of gradient drift instability growth times: A Swarm case study
A Spicher, T Cameron, EM Grono, KN Yakymenko, SC Buchert, ...
Geophysical Research Letters 42 (2), 201-206, 2015
622015
Ionospheric reflection of small‐scale Alfvén waves
MR Lessard, DJ Knudsen
Geophysical research letters 28 (18), 3573-3576, 2001
622001
Core ion flux bursts within solitary kinetic Alfvén waves
DJ Knudsen, JE Wahlund
Journal of Geophysical Research: Space Physics 103 (A3), 4157-4169, 1998
611998
Longitudinally propagating arc wave in the pre‐onset optical aurora
VM Uritsky, J Liang, E Donovan, E Spanswick, D Knudsen, W Liu, ...
Geophysical Research Letters 36 (21), 2009
572009
Rocket‐based measurements of ion velocity, neutral wind, and electric field in the collisional transition region of the auroral ionosphere
L Sangalli, DJ Knudsen, MF Larsen, T Zhan, RF Pfaff, D Rowland
Journal of Geophysical Research: Space Physics 114 (A4), 2009
562009
Temporal Evolution and Spatial Dispersion of Ion Conics: Evidence for a Polar Cusp Heating Wall
A Knudsen, D. J., Whalen, B. A., Abe, T. and Yau
AGU Geophysical Monograph on Solar System Plasmas in Space and Time (eds J …, 1994
56*1994
Magnetospheric signatures of STEVE: Implications for the magnetospheric energy source and interhemispheric conjugacy
Y Nishimura, B Gallardo‐Lacourt, Y Zou, E Mishin, DJ Knudsen, ...
Geophysical Research Letters 46 (11), 5637-5644, 2019
552019
Thermal ion upflow in the cusp ionosphere and its dependence on soft electron energy flux
JK Burchill, DJ Knudsen, JH Clemmons, K Oksavik, RF Pfaff, CT Steigies, ...
Journal of Geophysical Research: Space Physics 115 (A5), 2010
522010
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