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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Ionospheric perturbations in possible association with the 2010 Haiti earthquake, as based on medium-distance subionospheric VLF propagation data

Texto completo
Autor(es):
Hayakawa, M. [1, 2, 3] ; Raulin, J. P. [4] ; Kasahara, Y. [1, 5] ; Bertoni, F. C. P. [4] ; Hobara, Y. [1, 5] ; Guevara-Day, W. [6]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Electrocommun, Res Stn Seismo Electromagnet, Chofu Tokyo 1828585 - Japan
[2] Univ Electrocommun, Adv Wireless Commun Res Ctr, Chofu Tokyo 1828585 - Japan
[3] Informat Syst Inc, Earthquake Anal Lab, Minato Ku, Tokyo 1070062 - Japan
[4] Univ Presbiteriana Mackenzie, Escola Engn, Ctr Radio Astron & Astrofis, Sao Paulo - Brazil
[5] UEC, Grad Sch Informat & Elect Engn, Chofu Tokyo - Japan
[6] Comis Nacl Invest & Desarrollo Aeroespacial CONID, Lima - Peru
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: NATURAL HAZARDS AND EARTH SYSTEM SCIENCES; v. 11, n. 2, p. 513-518, 2011.
Citações Web of Science: 16
Resumo

Ionospheric perturbations in possible association with the 2010 Haiti earthquake occurred on 12 January 2010 (with a magnitude of 7.0 and depth of 10 km) are investigated on the basis of subionospheric propagation data from the NAA transmitter on the east coast of the USA to a VLF receiving station in Peru. The local nighttime VLF amplitude data are extensively investigated during the period from the beginning of October 2009 to the end of March 2010, in which the trend (nighttime average amplitude), dispersion and nighttime fluctuation are analysed. It is found that a clear precursory ionosphere perturbation is detected just around New Years day of 2010, about 12 days before the main shock, which is characterised by the simultaneous decrease in the trend and the increases in dispersion and nighttime fluctuation. An additional finding might be the presence of the effect of the Earth's tide one and two months before the main shock, which can only be seen for a huge EQ. (AU)

Processo FAPESP: 06/02979-0 - Monitoramento da atividade solar e da Anomalia Magnética do Atlântico Sul (AMAS) utilizando uma rede de receptores de ondas de muito baixa frequência (VLF): SAVNET - South America VLF NETwork
Beneficiário:Jean Pierre Raulin
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 07/05630-1 - Efeitos ionosféricos de tempestades magnéticas em escala global
Beneficiário:Fernando Celso Perin Bertoni
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores