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30th International Cosmic Ray Conference

3-11 July 2007
Merida, Mexico
Mexico/General timezone
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Contribution Oral (WITHDRAWN)

SH.3.6
SH 3.6

Space weather diagnosis using cosmic rays: observation with a global network of cosmic ray muon detectors

Speakers

  • Prof. Kazuoki MUNAKATA

Primary authors

Co-authors

  • Akira FUSHISHITA (Department of Physics, Shinshu University, Matsumoto 390-8621, Japan.)
  • Takuya NARUMI (Department of Physics, Shinshu University, Matsumoto 390-8621, Japan.)
  • Tatsuo CHIBA (Department of Physics, Shinshu University, Matsumoto 390-8621, Japan.)
  • Shin-ichi YASUE (School of General Education, Shinshu University, Matsumoto 390-8621, Japan.)
  • Chihiro KATO (Department of Physics, Shinshu University, Matsumoto 390-8621, Japan.)
  • Takao KUWABARA (Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA.)
  • John BIEBER (Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA.)
  • Paul EVENSON (Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA.)
  • Marcus DULDIG (Australian Government Antarctic Division, Kingston, Tasmania 7050, Australia)
  • John HUMBLE (School of Mathematics and Physics, University of Tasmania, Hobart, Tasmania 7001, Australia.)
  • Nelson SCHUCH (Southern Regional Space Research Center, PB-5021, 97110-970 Santa Maria, RS, Brazil.)
  • Marlos SILVA (National Institute for Space Research, PB-515, 12201-970 Sao Jose dos Campos, SP, Brazil.)
  • Alisson DAL LAGO (National Institute for Space Research, PB-515, 12201-970 Sao Jose dos Campos, SP, Brazil.)
  • Ismail SABBAH (Department of Physics, Faculty of Science, Kuwait University, Kuwait City, Kuwait.)
  • Zenjirou FUJII (STE lab., Nagoya University, Nagoya 464-8601, Japan)

Abstract content

The galactic cosmic ray (GCR) intensity often shows a dramatic variation responding to the arrival of interplanetary disturbances at the Earth. Aiming to observe such a variation with muon detectors, we constructed a prototype network of multidirectional detectors in March 2001 by installing a small detector in Brazil in addition to two existing detectors in Japan and Australia. By March 2006, the network was upgraded by expanding the Brazilian detector in size and also by putting an additional detector in operation at Kuwait City in Kuwait. This new global network, currently consisting of four detectors at Nagoya (Japan), Hobart (Australia), Sao Martinho (Brazil) and Kuwait City (Kuwait), can continuously monitor the GCR intensity in a total of 60 directional channels covering almost the entire sky and can precisely measure the variation of the GCR streaming separately from the variation of the GCR density. In this paper, we summarize results derived from observations using the prototype network and also report on initial performance of the new global network.