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Image of James W. Labelle Professor of Physics and Astronomy
at Dartmouth since 1989


  • Cornell University: Ph.D. 1985
  • Cornell University: M.S. 1982
  • Stanford University: B.S. 1980


  • 2001-present: Professor, Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire
  • 1995-2001: Associate Professor, Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire
  • 1989-1995: Assistant Professor, Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire
  • 1987-1989: Research Associate, Center for Atmospheric and Space Science Utah State University, Logan, Utah
  • 1985-1987: Postdoctoral Associate, Max-Planck Institute for Extraterrestrial Physics, Garching, West Germany
  • 1985-1985, Postdoctoral Associate, Cornell University, Ithaca, New York
  • 1981-1985, Graduate Research Assistant, Cornell University, Ithaca, New York
  • 1981: Research Assistant, Radioscience Laboratory, Stanford University, California

Honors and Awards

  • McMullen Fellowship for Graduate Study, 1980-1981
  • Presidential Young Investigator Award, 1990-1995
  • Dartmouth Junior Faculty Fellowship, Spring 1993


  • American Geophysical Union
  • International Union of Radio Science, Commission H
  • Adjunct Scientist at Max-Planck-Institut fur extraterr. Physik

Contact Information

Research Interests

Ionospheric and magnetospheric physics; plasma measurements in space; remote sensing of ionospheric plasma processes.

Selected Recent Publications

"High-latitude radiowave propagation studies using a meridional chain of receivers", submitted to Ann. Geophys., August (2003).
"A model of zebra burst emission in solar radio bursts", with P.H. Yoon, M. Karlicky, and R.A. Treumann, Astrophys. J., vol 593, 1195-1207,(2003).
"Locations of Pcl waves relative to the magnetopause", with R.E. Denton and X. Zhu, Ann. Geophys. 20, 1763-1767 (2002).
"Auroral Radio Emissions, 1. Hisses, Roars, and Bursts", with R.A. Treumann, Space Sci. Rev. 101, 295-440 (2002).
"Statistical study of auroral roar emissions observed at South Pole Station", with A.T. Weatherwax, J. Geophys. Res. 107, 10.1029/2001JA000319 (2002).
"Model results and interpretation related to topside observations of auroral roar", with A.T. Weatherwax and P.H. Yoon, J. Geophys. Res. 107, 10.1029/2001JA000315 (2002).
"Measurement and modeling of auroral absorption of HF radio waves using a single receiver", with E.M. Greenberg, Radio Sci., 37, 10.1029/2000RS002550, (2002).
"Observations of auroral roar emissions at Polar Cap latitudes: Results from the early Polar Cap Observatory", with J.M. Hughes, Radio Sci., 36, 1859-1868, (2001).
"Joint incoherent scatter radar/medium frequency interferometer observations of auroral roar", with J.M. Hughes, J. Geophys. Res., 106, 21157, (2001).
"Statistical and case studies of 2fcc auroral roar observed with a medium-frequency interferometer", with J.M. Hughes and J. Watermann, J. Geophys. Res., 106, 21147, (2001).
"First observations of flickering auroral roar", with J.M. Hughes, Geophys. Res. Lett., 28, 123, (2001).
"Discrete electrostatic eigenmodes associated with ionospheric density structure", with P.H. Yoon, and A.T. Weatherwax, J. Geophys. Res., 105, 27589, (2000).
"A medium frequency interferometer for studying auroral radio emissions", with J.M. Hughes, and M.L. Trimpi, Rev. Sci. Instruments, 71, 3200 (2000).
"HF Chirps: Eigenmode trapping in density depletions", with K.L. McAdams and R.E. Ergun, Geophys. Res. Lett., 27, 321, (2000).