Simultaneous observation of upward moving field-aligned energetic electrons and ions on auroral zone field lines

Simultaneous observations of a pulsation event from the ground, with balloons and with a geostationary satellite on August 12, 1978

Simultaneous observations of E and B-ULF waves aboard a sounding rocket payload

Simultaneous observations of E-region coherent backscatter and electric field amplitude at F-region heights with the Millstone Hill UHF radar

Simultaneous observations of E-region irregularities by ground-based and rocket-borne techniques

Simultaneous observations of E-region irregularities by ground-based and rocket-borne techniques

Simultaneous observations of electrostatic oxygen cyclotron waves and ion conics

Simultaneous observations of energetic electrons and dawnside chorus in geosynchronous orbit

Simultaneous observations of evening magnetic pulsations and morning electron precipitation events in the auroral zone during the substorm

Simultaneous observations of H(+) and O(+) ions at two altitudes by the Akebono and Dynamics Explorer 1 satellites

Simultaneous observations of neutral winds and electric fields at spaced locations in the dawn auroral oval

Simultaneous observations of omega band related phenomena in both hemispheres

Simultaneous observations of Polar Stratospheric Clouds and HNO3 over Scandinavia in January, 1992

Simultaneous observations of radio wave frequency and intensity fluctuations for estimates of solar wind speed

Simultaneous observations of the first and second harmonic field line resonances in the noon sector with GEOS-1 and GEOS-2

Simultaneous observations of travelling ionospheric disturbances by two-dimensional radio interferometry and the differential Doppler technique applied to satellite signals

Simultaneous rocket and radar measurements of currents in an auroral arc

Simultaneous rocket measurements of the electron density of the ionospheric D-region at polar, middle, and equatorial latitudes

Simultaneous rocket measurements of the structural parameters of the polar thermosphere and auroral radiation

Simultaneous rocket probe and radar measurements of equatorial spread F - Transitional and short wavelength results