Remote sensing of interplanetary shocks using a scintillation method

Details Remote sensing of interplanetary shocks using a scintillation method Remote sensing of interplanetary shocks using a scintillation method

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sprm.agarq....h&link_type=abstract

In AGARD, Scattering and Propagation in Random Media 6 p (SEE N89-17706 10-31)

Physics

Interplanetary Medium, Prediction Analysis Techniques, Remote Sensing, Scintillation, Shock Waves, Solar Terrestrial Interactions, Magnetic Storms, Plasma Density, Position (Location), Shapes

Scientific paper

Energetic interplanetary disturbances originating at the Sun cause geomagnetic storms when they reach the Earth. The disturbances affect radio communication, damage electrical power grid networks, increase the atmospheric density and drag on satellites, and are accompanied by showers of energetic particles which present radiation hazards to manned spacecraft. A ground-based method for locating and tracking transients in interplanetary space long before they reach the Earth is described. Continuous observations of transients during a two year period near sunspot maximum have demonstrated the potential of the technique for predicting geomagnetic storms and new information on the zones of the solar disk from which transients originate was given. The latter contradicts some widely held theories in solar-terrestrial physics and shows that a major revision of ideas is needed. Contrary to expectations, it was found that open-magnetic field regions known as coronal holes are the dormant sources of the most powerful interplanetary shocks. This result conflicts with the solar flare theory of geomagnetic storms.

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