Sunny Wing-Yee Tam

Professor

  • 536 Citations
  • 12 h-Index
19952019
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Research Output 1995 2019

Article
5 Citations (Scopus)

Analysis of ionospheric electron parameters versus geomagnetic index Dst from RO data of FORMOSAT-3/COSMIC

Wang, K. & Tam, S. W-Y., 2009 Jan 1, In : GPS Solutions. 14, 1, p. 99-108 10 p.

Research output: Contribution to journalArticle

COSMIC
electron density
electron
ionosphere
GPS
11 Citations (Scopus)

Analytical determination of power-law index for the Chapman et al. Sandpile (FSOC) analog for magnetospheric activity - a renormalization-group analysis

Tam, S. W. Y., Chang, T., Chapman, S. C. & Watkins, N. W., 2000 May 1, In : Geophysical Research Letters. 27, 9, p. 1367-1370 4 p.

Research output: Contribution to journalArticle

avalanche
avalanches
power law
analogs
power law distribution
7 Citations (Scopus)
wave-particle interactions
solar wind
electron
kinetics
electrons
48 Citations (Scopus)

Complexity, forced and/or self-organized criticality, and topological phase transitions in space plasmas

Chang, T., Tam, S. W-Y., Wu, C. C. & Consolini, G., 2003 Oct 31, In : Space Science Reviews. 107, 1-2, p. 425-445 21 p.

Research output: Contribution to journalArticle

space plasmas
phase transition
plasma
geomagnetic tail
forest fires
98 Citations (Scopus)

Complexity induced anisotropic bimodal intermittent turbulence in space plasmas

Chang, T., Tam, S. W. Y. & Wu, C. C., 2004 Apr 1, In : Physics of Plasmas. 11, 4, p. 1287-1299 13 p.

Research output: Contribution to journalArticle

space plasmas
turbulence
plasma resonance
probability distribution functions
intermittency
19 Citations (Scopus)

Complexity in space plasmas - A brief review

Chang, T., Tam, S. W-Y. & Wu, C. C., 2006 Feb 1, In : Space Science Reviews. 122, 1-4, p. 281-291 11 p.

Research output: Contribution to journalArticle

space plasmas
plasma
probability distribution functions
extreme event
wavelet analysis
1 Citation (Scopus)

Density Depletions Associated With Enhancements of Electron Cyclotron Harmonic Emissions: An ERG Observation

Kazama, Y., Kojima, H., Miyoshi, Y., Kasahara, Y., Usui, H., Wang, B. J., Wang, S. Y., Tam, S. W. Y., Chang, T. F., Ho, P. T. P., Asamura, K., Kumamoto, A., Tsuchiya, F., Kasaba, Y., Matsuda, S., Shoji, M., Matsuoka, A., Teramoto, M., Takashima, T. & Shinohara, I., 2018 Oct 16, In : Geophysical Research Letters. 45, 19, p. 10,075-10,083

Research output: Contribution to journalArticle

cyclotrons
depletion
harmonics
electron
augmentation
2 Citations (Scopus)
Magnetohydrodynamics
magnetohydrodynamics
auroral zones
timescale
Electric fields
15 Citations (Scopus)

Effect of electron resonant heating on the kinetic evolution and acceleration of the solar wind

Tam, S. W-Y. & Chang, T., 2001 Apr 1, In : Geophysical Research Letters. 28, 7, p. 1351-1354 4 p.

Research output: Contribution to journalArticle

solar wind
heating
electron
kinetics
wave-particle interactions

ERG observations of drift echoes during a unique period of the satellite mission

Chang, T. F., Cheng, C. Z., Tam, S. W. Y., Chiang, C. Y., Miyoshi, Y., Hori, T., Mitani, T., Takashima, T., Matsuoka, A., Teramoto, M. & Shinohara, I., 2019 Dec 1, In : Earth, Planets and Space. 71, 1, 18.

Research output: Contribution to journalArticle

Open Access
satellite mission
echoes
GOES
injection
GOES 13
23 Citations (Scopus)

Further development in theory/data closure of the photoelectron-driven polar wind and day-night transition of the outflow

Tam, S. W-Y., Yasseen, F. & Chang, T., 1998 Jan 1, In : Annales Geophysicae. 16, 8, p. 948-968 21 p.

Research output: Contribution to journalArticle

night
closures
photoelectrons
outflow
EXOS-D satellite
37 Citations (Scopus)

Geospace exploration project ERG

Miyoshi, Y., Shinohara, I., Takashima, T., Asamura, K., Higashio, N., Mitani, T., Kasahara, S., Yokota, S., Kazama, Y., Wang, S. Y., Tam, S. W. Y., Ho, P. T. P., Kasahara, Y., Kasaba, Y., Yagitani, S., Matsuoka, A., Kojima, H., Katoh, Y., Shiokawa, K. & Seki, K., 2018 Dec 1, In : Earth, Planets and Space. 70, 1, 101.

Research output: Contribution to journalArticle

Open Access
radiation belts
radiation
satellite observation
electrons
electron
2 Citations (Scopus)

Global observations of the 630-nm nightglow and patterns of brightness measured by ISUAL

Chiang, C. Y., Chang, T. F., Tam, S. W. Y., Huang, T. Y., Chen, A. B. C., Su, H. T. & Hsu, R. R., 2013 Jan 1, In : Terrestrial, Atmospheric and Oceanic Sciences. 24, 2, p. 283-293 11 p.

Research output: Contribution to journalArticle

nightglow
airglow
winter
anomaly
summer
30 Citations (Scopus)

Intermittency analyses on the SIERRA measurements of the electric field fluctuations in the auroral zone

Tam, S. W-Y., Chang, T., Kintner, P. M. & Klatt, E., 2005 Mar 16, In : Geophysical Research Letters. 32, 5, p. 1-4 4 p.

Research output: Contribution to journalArticle

auroral zones
intermittency
electric field
electric fields
extremely low frequencies
2 Citations (Scopus)
intermittency
solar wind
disturbances
magnetic field
timescale
66 Citations (Scopus)

Kinetic evolution and acceleration of the solar wind

Tam, S. W-Y. & Chang, T., 1999 Oct 15, In : Geophysical Research Letters. 26, 20, p. 3189-3192 4 p.

Research output: Contribution to journalArticle

solar wind
wave-particle interactions
kinetics
Coulomb collisions
protons
25 Citations (Scopus)

Kinetic modeling of the polar wind

Tam, S. W. Y., Chang, T. & Pierrard, V., 2007 Nov 1, In : Journal of Atmospheric and Solar-Terrestrial Physics. 69, 16, p. 1984-2027 44 p.

Research output: Contribution to journalArticle

kinetics
modeling
outflow
Earth ionosphere
Coulomb collisions
4 Citations (Scopus)

Local time distributions of repetition periods for rising tone lower band chorus waves in the magnetosphere

Shue, J. H., Hsieh, Y. K., Tam, S. W. Y., Wang, K., Fu, H. S., Bortnik, J., Tao, X., Hsieh, W. C. & Pi, G., 2015 Oct 28, In : Geophysical Research Letters. 42, 20, p. 8294-8301 8 p.

Research output: Contribution to journalArticle

magnetospheres
magnetosphere
repetition
magnetic field
temperature
14 Citations (Scopus)

Low-energy particle experiments–electron analyzer (LEPe) onboard the Arase spacecraft

Kazama, Y., Wang, B. J., Wang, S. Y., Ho, P. T. P., Tam, S. W. Y., Chang, T. F., Chiang, C. Y. & Asamura, K., 2017 Dec 1, In : Earth, Planets and Space. 69, 1, 165.

Research output: Contribution to journalArticle

particle energy
analyzers
spacecraft
energy
electron
7 Citations (Scopus)

Rank-ordered multifractal analysis for intermittent fluctuations with global crossover behavior

Tam, S. W. Y., Chang, T., Kintner, P. M. & Klatt, E. M., 2010 Mar 26, In : Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 81, 3, 036414.

Research output: Contribution to journalArticle

Multifractal Analysis
Crossover
crossovers
Fluctuations
scaling
12 Citations (Scopus)

ROMA (Rank-Ordered Multifractal Analyses) of intermittency in space plasmas - A brief tutorial review

Chang, T., Wu, C. C., Podesta, J., Echim, M., Lamy, H. & Tam, S. W. Y., 2010 Oct 22, In : Nonlinear Processes in Geophysics. 17, 5, p. 545-551 7 p.

Research output: Contribution to journalArticle

space plasmas
intermittency
Magnetohydrodynamics
electric field
oscillation
63 Citations (Scopus)

Self‐consistent kinetic photoelectron effects on the polar wind

Tam, S. W-Y., Yasseen, F., Chang, T. & Ganguli, S. B., 1995 Jan 1, In : Geophysical Research Letters. 22, 16, p. 2107-2110 4 p.

Research output: Contribution to journalArticle

photoelectrons
kinetics
electron
heat flux
electrons
1 Citation (Scopus)

Substorm-Associated Ionospheric Flow Fluctuations During the 27 March 2017 Magnetic Storm: SuperDARN-Arase Conjunction

Hori, T., Nishitani, N., Shepherd, S. G., Ruohoniemi, J. M., Connors, M., Teramoto, M., Nakano, S., Seki, K., Takahashi, N., Kasahara, S., Yokota, S., Mitani, T., Takashima, T., Higashio, N., Matsuoka, A., Asamura, K., Kazama, Y., Wang, S. Y., Tam, S. W. Y., Chang, T. F. & 3 others, Wang, B. J., Miyoshi, Y. & Shinohara, I., 2018 Sep 28, In : Geophysical Research Letters. 45, 18, p. 9441-9449 9 p.

Research output: Contribution to journalArticle

radar networks
conjunction
magnetic storms
ionospherics
magnetosphere
6 Citations (Scopus)

The limitation and applicability of Musher‐Sturman Equation to two‐dimensional lower hybrid wave collapse

Tam, S. W-Y. & Chang, T., 1995 Jan 1, In : Geophysical Research Letters. 22, 9, p. 1125-1128 4 p.

Research output: Contribution to journalArticle

magnetic field
ponderomotive forces
ion
wave field
rockets
1 Citation (Scopus)
ionospheric electron density
electron density
ionospheres
ionosphere
electric field
Chapter
4 Citations (Scopus)

Anisotropic kinetic effects of photoelectrons on polar wind transport

Tam, S. W-Y., Yasseen, F., Chang, T., Ganguli, S. B. & Retterer, J. M., 1995 Jan 1, Cross-Scale Coupling in Space Plasmas, 1995. Horwitz, J. L., Singh, N. & Burch, J. L. (eds.). Blackwell Publishing Ltd, p. 133-139 7 p. (Geophysical Monograph Series; vol. 93).

Research output: Chapter in Book/Report/Conference proceedingChapter

photoelectrons
kinetics
potential field
electron
heat flux

Complexity in space plasmas

Chang, T., Tam, S. W-Y. & Wu, C. C., 2005 Dec 1, Multiscale Coupling of Sun-Earth Processes. Elsevier, p. 3-7 5 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

plasma
dissipation
pile
turbulence
sand
1 Citation (Scopus)

Day-night asymmetry of polar outflow due to the kinetic effects of anisotropic photoelectrons

Tam, S. W-Y., Yasseen, F. & Chang, T., 1998 Jan 1, Geospace Mass and Energy Flow: Results From the International Solar-Terrestrial Physics Program, 1998. Horwitz, J. L., Peterson, W. K. & Gallagher, D. L. (eds.). Blackwell Publishing Ltd, p. 97-106 10 p. (Geophysical Monograph Series; vol. 104).

Research output: Chapter in Book/Report/Conference proceedingChapter

EXOS-D satellite
night
asymmetry
photoelectrons
outflow
2 Citations (Scopus)

Energization of ions by bimodal intermittent fluctuations

Tam, S. W. Y. & Chang, T., 2005 Dec 1, Multiscale Coupling of Sun-Earth Processes. Elsevier, p. 375-381 7 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

turbulence
ion
electric field
oscillation
plasma
Conference contribution

Comparison of solar wind driving mechanisms: Ion cyclotron resonance versus kinetic suprathermal electron effects

Tam, S. W-Y. & Chang, T., 2003 Sep 2, Solar Wind Ten: Proceedings of the 10th International Solar Wind Conference. Velli, M., Bruno, R. & Malara, F. (eds.). American Institute of Physics Inc., p. 259-262 4 p. (AIP Conference Proceedings; vol. 679).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

cyclotron resonance
solar wind
kinetics
ions
electrons
Editorial

Editorial

Tam, S. W-Y., Pierrard, V. & Schunk, R. W., 2007 Nov 1, In : Journal of Atmospheric and Solar-Terrestrial Physics. 69, 16, p. 1899-1900 2 p.

Research output: Contribution to journalEditorial

Review article
30 Citations (Scopus)

The Space Physics Environment Data Analysis System (SPEDAS)

Angelopoulos, V., Cruce, P., Drozdov, A., Grimes, E. W., Hatzigeorgiu, N., King, D. A., Larson, D., Lewis, J. W., McTiernan, J. M., Roberts, D. A., Russell, C. L., Hori, T., Kasahara, Y., Kumamoto, A., Matsuoka, A., Miyashita, Y., Miyoshi, Y., Shinohara, I., Teramoto, M., Faden, J. B. & 82 others, Halford, A. J., McCarthy, M., Millan, R. M., Sample, J. G., Smith, D. M., Woodger, L. A., Masson, A., Narock, A. A., Asamura, K., Chang, T. F., Chiang, C. Y., Kazama, Y., Keika, K., Matsuda, S., Segawa, T., Seki, K., Shoji, M., Tam, S. W. Y., Umemura, N., Wang, B. J., Wang, S. Y., Redmon, R., Rodriguez, J. V., Singer, H. J., Vandegriff, J., Abe, S., Nose, M., Shinbori, A., Tanaka, Y. M., UeNo, S., Andersson, L., Dunn, P., Fowler, C., Halekas, J. S., Hara, T., Harada, Y., Lee, C. O., Lillis, R., Mitchell, D. L., Argall, M. R., Bromund, K., Burch, J. L., Cohen, I. J., Galloy, M., Giles, B., Jaynes, A. N., Le Contel, O., Oka, M., Phan, T. D., Walsh, B. M., Westlake, J., Wilder, F. D., Bale, S. D., Livi, R., Pulupa, M., Whittlesey, P., DeWolfe, A., Harter, B., Lucas, E., Auster, U., Bonnell, J. W., Cully, C. M., Donovan, E., Ergun, R. E., Frey, H. U., Jackel, B., Keiling, A., Korth, H., McFadden, J. P., Nishimura, Y., Plaschke, F., Robert, P., Turner, D. L., Weygand, J. M., Candey, R. M., Johnson, R. C., Kovalick, T., Liu, M. H., McGuire, R. E., Breneman, A., Kersten, K. & Schroeder, P., 2019 Jan 1, In : Space Science Reviews. 215, 1, 9.

Research output: Contribution to journalReview article

Open Access
systems analysis
physics
observatories
commands
observatory