tracking heliospheric disturbances by interplanetary scintillation

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ID: 221837
2006
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Abstract
Coronal mass ejections are known as a solar cause of significant geospace disturbances, and a fuller elucidation of their physical properties and propagation dynamics is needed for space weather predictions. The scintillation of cosmic radio sources caused by turbulence in the solar wind (interplanetary scintillation; IPS) serves as an effective ground-based method for monitoring disturbances in the heliosphere. We studied global properties of transient solar wind streams driven by CMEs using 327-MHz IPS observations of the Solar-Terrestrial Environment Laboratory (STEL) of Nagoya University. In this study, we reconstructed three-dimensional features of the interplanetary (IP) counterpart of the CME from the IPS data by applying the model fitting technique. As a result, loop-shaped density enhancements were deduced for some CME events, whereas shell-shaped high-density regions were observed for the other events. In addition, CME speeds were found to evolve significantly during the propagation between the corona and 1 AU.
Reference Key
tokumaru2006nonlineartracking Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;M. Tokumaru;M. Kojima;K. Fujiki;M. Yamashita
Journal BMC research notes
Year 2006
DOI
DOI not found
URL
http://www.nonlin-processes-geophys.net/13/329/2006/npg-13-329-2006.pdf
Keywords
cosmic physics sciencephysicsgeophysics

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