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This paper presents the global analysis of two extended decreases in the galactic cosmic-ray intensity observed by worldwide networks of ground-based detectors in 2012. This analysis is capable of separately deriving the cosmic-ray density (or omnidirectional intensity) and anisotropy…
Aim … To map presence, absence and ignorance of Antarctic seabird breeding occupancy at the spatial resolution of ice-free habitat sites to identify knowledge gaps and inform management and conservation. Location … East Antarctica between longitudes 30°?E and 150°?E.
Observations of temporary Forbush decreases (FDs) in the Galactic cosmic-ray (GCR) flux due to the passage of solar storms are useful for space-weather studies and alerts. Here…
Due to its persistence and potential ecological and health impacts, mercury (Hg) is a global pollutant of major concern that may reach high concentrations even in remote polar oceans. In contrast to the Arctic Ocean…
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 ray intensity recorded with ground-based detectors also shows temporal variations arising from atmospheric variations.
Space weather forecasting is a very important tool for the space situational awareness to the space objects, the space environment and related threats and risks for manned and non-manned spacecrafts. The global network of ground based multi-directional detectors (GMDN)…
We analyse the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 December 14. An intense geomagnetic storm was also recorded during this FD with the peak Kp index of 8+.
We analyze the precursory anisotropy … of a Forbush decrease observed with the multidirectional … muon detector at S˜ao Martinho in Brazil … on December 14, 2006. By subtracting contribution … from the diurnal anisotropy precisely determined by … the GlobalMuon Detector Network (GMDN)…
We analyze the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 … December 14. An intense geomagnetic storm is also recorded during this FD with the peak Kp index of 8+.
We compare the merits of potential observatory sites on the … Antarctic Plateau, in regard to the boundary layer, cloud cover, free … atmosphere seeing, aurorae, airglow, and precipitable water vapour. We find that (a)…
The Antarctic plateau contains the best sites on earth for many forms of astronomy, but … none of the existing bases was selected with astronomy as the primary motivation. In this paper, we try to systematically compare the merits of potential observatory sites. We include South … Pole, Domes A…
The Global Muon Detector Network (GMDN) was … completed by installing a multi-directional cosmic-ray muon … hodoscope in Kuwait University in March 2006. The GMDN is … currently consisting of four multi-directional muon detectors … located at Nagoya (Japan), Hobart (Australia), Sao Martinho …
We have developed a method for determining interplanetary coronal mass ejection … (ICME) geometry from galactic cosmic ray data recorded by the ground-based muon … detector network. The cosmic ray density depression inside the ICME, which is associated … with a Forbush decrease…