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1998 Fiscal Year Final Research Report Summary

Novel Improvement Strategy for the Thrust of Linear Induction Motor Using Modified Ladder Slits

Research Project

Project/Area Number 09640534
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Space and upper atmospheric physics
Research InstitutionCHUBU UNIVERSITY

Principal Investigator

HAKAMADA Kazuyuki  Engineering, Professor, 工学部, 教授 (90102780)

Project Period (FY) 1997 – 1998
KeywordsSOLAR WIND / MAGNETIC FIELD / Radial Field Model / 太陽風速度 / ポテンシャルモデル
Research Abstract

The synoptic map of the solar wind speed (SWS) estimated by the computer-assisted tomography (CAT) method with interlanetary scintillation observations is constructed for the 1909 Carrington rotation. A similar synoptic map of expansion rate (RBR) of the coronal magnetic field calculated by the so-called 'potential model' with the photospheric magnetic field is also constructed under the radial field assumption (RF model). These maps consist of 64 800 (180×360) data points of equal area. We examine for the first time relations between the SWS estimated by the CAT technique and the RBR calculated by the RF model. A highly significant correlation is found between the SWS and the RBR. A simple correlation coefficient is about-0.72 ; that is, high-velocity winds emanate from photospheric areas corresponding to a low expansion rate of the coronal magnetic field, and low-velocity. winds emanate from photospheric areas of high expansion rate. This result suggests that there is some acceleration mechanism relating to the coronal field expansion.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Hakamada, K.: "Three-Dimensional Geometry of Planar Magnetic Structure in the Corona"Solar Physics. 181. 73-85 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 袴田和幸: "惑星間平面磁場構造のモデル"情報科学リサーチジャーナル. 5. 69-73 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 袴田和幸: "コロナ磁場のポテンシャルモデル,Radial Field Model"情報科学リサーチジャーナル. 6. 43-46 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hakamada, K.: "Solar Wind Speed and Expansion Rate of the Coronal Magnetic Field during Carrington Rotation"Solar Physics. (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kojima, M.: "Low Speed Solar Wind from the Vicinity of Solar Active Regions"Journal of Geophysical Research. (印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] "Comparison of Solar Wind Speed with LASCO Data Analyzed by Tomography Method During Whole Sun Month"

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] "Model of Interplanetary Planar Magnetic Structure"

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] "Radial Field Model"

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] "SOLAR WIND SPEED AND EXPANSION RATE OF THE CORONAL MAGNETIC FIELD DURING CARRINGTON ROTATION 1909"

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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