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Tracking Heliospheric Disturbances by Interplanetary Scintillation : Volume 13, Issue 3 (01/08/2006)

By Tokumaru, M.

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Book Id: WPLBN0004019770
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Tracking Heliospheric Disturbances by Interplanetary Scintillation : Volume 13, Issue 3 (01/08/2006)  
Author: Tokumaru, M.
Volume: Vol. 13, Issue 3
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Yamashita, M., Fujiki, K., Kojima, M., & Tokumaru, M. (2006). Tracking Heliospheric Disturbances by Interplanetary Scintillation : Volume 13, Issue 3 (01/08/2006). Retrieved from

Description: Solar-Terrestrial Environment Laboratory, Nagoya University, Toyokawa, Aichi 442-8507, Japan. 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.

Tracking heliospheric disturbances by interplanetary scintillation

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