Radio Scintillation Imaging Observations of Interplanetary Disturbances Associated with the July 14, 2000 Event

Details Radio Scintillation Imaging Observations of Interplanetary Disturbances Associated with the July 14, 2000 Event Radio Scintillation Imaging Observations of Interplanetary Disturbances Associated with the July 14, 2000 Event

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh11d..05t&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH11D-05

Physics

2100 Interplanetary Physics, 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2139 Interplanetary Shocks, 2164 Solar Wind Plasma, 7513 Coronal Mass Ejections

Scientific paper

Interplanetary scintillation (IPS) measurements made with numbers of the lines-of-sight to radio sources allow us to produce an all-sky map of solar wind plasma. Such imaging observations by IPS are useful for studying the three-dimensional structure and propagation of the coronal mass ejection (CME) in the interplanetary space. In this paper, we report IPS imaging observations taken with the 327 MHz IPS system of the Solar-Terrestrial Environment Laboratory (STEL), Nagoya University, for the July 14 (Bastille Day), 2000 event. The interplanetary (IP) counterpart to the flare/coronal mass ejection (CME) which occurred on July 14, 2000 was found clearly from STEL IPS measurements made on July 14-15. The all-sky map of the solar wind density disturbance factor (so called "g-value") derived from our IPS data exhibits approximately symmetric appearance of IP disturbances in eastern and western hemispheres. Our IPS data show that the latitude extent of IP disturbances was much smaller than the longitude one, implying a torus-shape structure of IP disturbances. The wing part of IP disturbances probed by IPS was found to expand at slower speed than the central part directed to the earth.

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