@Article{KlausnerMeDoPaTyFrKh:2014:AdWaTe,
               author = "Klausner, Virginia and Mendes, Odim and Domingues, Margarete 
                         Oliveira and Papa, A. R. R. and Tyler, R. H. and Frick, P. and 
                         Kherani, Esfhan Alam",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and Department of Geophysics, National 
                         Observatory, Rio de Janeiro, Brazil; Institute of Physics, Rio de 
                         Janeiro State University, Rio de Janeiro, Brazil and Department of 
                         Astronomy, University of Maryland, College Park MD, United States 
                         and Laboratory of Physical Hydrodynamics, Institute of Continuous 
                         Media Mechanics, Perm, Russian Federation and {Instituto Nacional 
                         de Pesquisas Espaciais (INPE)}",
                title = "Advantage of wavelet technique to highlight the observed 
                         geomagnetic perturbations linked to the Chilean tsunami (2010)",
              journal = "Journal of Geophysical Research: Space Physics",
                 year = "2014",
               volume = "119",
               number = "4",
                pages = "3077--3093",
             keywords = "geomagnetic field variations, quiet days, tsunami, wavelet 
                         techniques, maximum variance analysis.",
             abstract = "The vertical component (Z) of the geomagnetic field observed by 
                         ground-based observatories of the International Real-Time Magnetic 
                         Observatory Network has been used to analyze the induced magnetic 
                         fields produced by the movement of a tsunami, electrically 
                         conducting sea water through the geomagnetic field. We focus on 
                         the survey of minutely sampled geomagnetic variations induced by 
                         the tsunami of 27 February 2010 at Easter Island (IPM) and Papeete 
                         (PPT) observatories. In order to detect the tsunami disturbances 
                         in the geomagnetic data, we used wavelet techniques. We have 
                         observed an 85% correlation between the Z component variation and 
                         the tide gauge measurements in period range of 10 to 30 min which 
                         may be due to two physical mechanisms: gravity waves and the 
                         electric currents in the sea. As an auxiliary tool to verify the 
                         disturbed magnetic fields, we used the maximum variance analysis 
                         (MVA). At PPT, the analyses show local magnetic variations 
                         associated with the tsunami arriving in advance of sea surface 
                         fluctuations by about 2 h. The first interpretation of the results 
                         suggests that wavelet techniques and MVA can be effectively used 
                         to characterize the tsunami contributions to the geomagnetic field 
                         and further used to calibrate tsunami models and implemented to 
                         real-time analysis for forecast tsunami scenarios. Key Points 
                         Chilean tsunami, 2010, was analyzed using wavelet techniques Z 
                         component variation and tide gauge measurements showed a 
                         correlation of 85% Magnetic variations induced by tsunami were 
                         detected by 2 h in advance ©2014. American Geophysical Union. All 
                         Rights Reserved.",
                  doi = "10.1002/2013JA019398",
                  url = "http://dx.doi.org/10.1002/2013JA019398",
                 issn = "2169-9402",
                label = "scopus 2014-05 KlausnerMeDoPaTyFrKh:2014:AdWaTe",
             language = "en",
           targetfile = "743694_3_related_ms_3150702_n28dpf.pdf",
        urlaccessdate = "05 maio 2024"
}