47 citations · 102 across the 5 of their papers we have counts for
5 papers
Ground-based Observations of Temporal Variation of Cosmic Ray Spectrum during Forbush Decreases
W. Mitthumsiri, D. Ruffolo, K. Munakata +29
Observations of temporary Forbush decreases (FDs) in the Galactic cosmic ray (GCR) flux due to passage of solar storms are useful for space weather studies and alerts. Here we intr…
Global analysis of the extended cosmic-ray decreases observed with world-wide networks of neutron monitors and muon detectors; temporal variation of the rigidity spectrum and its implication
K. Munakata, Y. Hayashi, M. Kozai +20
This paper presents the global analysis of two extended decreases of the galactic cosmic ray intensity observed by world-wide networks of ground-based detectors in 2012. This analy…
Analysis of cosmic rays' atmospheric effects and their relationships to cutoff rigidity and zenith angle using Global Muon Detector Network data
R. R. S. Mendonça, C. Wang, C. R. Braga +19
Cosmic rays are charged particles whose flux observed at Earth shows temporal variations related to space weather phenomena and may be an important tool to study them. The cosmic r…
Precursors of the Forbush Decrease on December 14, 2006 observed with the Global Muon Detector Network (GMDN)
A. Fushishita, T. Kuwabara, C. Kato +13
We analyze the precursor of a Forbush Decrease (FD) observed with the Global Muon Detector Network on December 14, 2006. An intense geomagnetic storm is also recorded during this F…
Drift effects and the cosmic ray density gradient in a solar rotation period: First observation with the Global Muon Detector Network (GMDN)
Y. Okazaki, A. Fushishita, T. Narumi +14
We present for the first time hourly variations of the spatial density gradient of 50 GeV cosmic rays within a sample solar rotation period in 2006. By inversely solving the transp…