%0 Conference Proceedings
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3EUFCFP
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JGH3
%@resumeid 8JMKD3MGP5W/3C9JHUD
%@usergroup administrator
%@usergroup seeger5
%@usergroup administrator
%3 ILWS2009 abstract_Nikolas Anisotropy Observed at the Brazilian Southern ....doc
%B International Living with a Star, (ILWS/2009).
%X Space Weather studies the conditions of the interplanetary environment and its effects on the Earth. Coronal mass ejections (CMEs) are large plasma eruptions released from the Sun and they are one of the main solar-interplanetary structures causing the geomagnetic disturbances on Earth. Such events, also named geomagnetic storms are caused when there are sudden changes in the plasma and magnetic field in the geospace which surrounds the Earths magnetosphere. CMEs passages are known to be an important origin of such changes. The damage caused by geomagnetic storms are several, including loss of data from satellite, signal scintillation, interference on radar, telecommunications cable disruption, electricity grid disturbance and black-out electrical power. Galactic cosmic rays (~50 GeV) are observed by ground-level detectors. They suffer modulation effects due to interplanetary disturbances such as CMEs and its correspondent structures, i.e., interplanetary shocks waves and magnetic clouds. A CME may shield cosmic rays, allowing terrestrial detectors to identify some signatures such as precursory phenomena appearing upstream of the shock. Muons are secondary cosmic rays originated from inelastic collision between atmospheric particles with the primary cosmic rays at high altitude. This work discusses the possibility of Space Weather forecasting using ground-based multidirectional detectors. Data of plasma parameters and magnetic field from ACE satellite and Dst index are used for comparison with the cosmic ray data. A prototype detector of secondary cosmic rays, muons, was installed at the Southern Space Observatory - SSO/CRS/INPE  MCT in 2001, Sao Martinho da Serra, RS, in South of Brazil. It was composed of 2 layers of 4 detectors (2x2x2) with temporal resolution of one hour. The detector was upgraded in 2005 to 56 detectors (2x4x7) improving the temporal resolution to about one minute. The expansion enabled a decrease of the observational error from 0.16% to 0.06% in the muons counting.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%T Anisotropy Observed at the Brazilian Southern Space Observatory by the Multidirectional Muon Detector – MMD
%@secondarytype PRE CI
%8 October, 4-9
%@group CRS-CCR-INPE-MCT-BR
%@group DGE-CEA-INPE-MCT-BR
%@group CRS-CCR-INPE-MCT-BR
%@group
%@group CRS-CCR-INPE-MCT-BR
%@group
%@group CRS-CCR-INPE-MCT-BR
%@group CRS-CCR-INPE-MCT-BR
%@group CRS-CCR-INPE-MCT-BR
%2 sid.inpe.br/mtc-m19@80/2009/12.23.14.38.14
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%4 sid.inpe.br/mtc-m19@80/2009/12.23.14.38
%D 2009
%A Kemmerich, Nikolas,
%A Lago, Alisson Dal,
%A Schuch, Nelson Jorge,
%A Silva, Marlos Rockenbach da,
%A Vieira, Lucas Ramos,
%A Braga, Carlos Roberto,
%A Silveira, Marcos Vinicius Dias,
%A Seeger, Aline,
%A Thuorst, José Fernando,
%C Ubatuba, São Paulo, Brasil
%@area CEA