Proyectos
Detecting Ionospheric Precursor of a deep Earthquake (378.8km) on 7 July 2013, =7.2 Papua New Guinea under Geomagnetic Storm: Two-Dimensional Principal Component Analysis
Resumen
Two-dimensional ionospheric total electron content (TEC) data during the time period from 00:00 on 2 July to 12:00 UT on 08 July, 2013, which was 5 days before to 1 days after a deep earthquake at 18:35:30 on 7 July, 2013 UT ( =7.2) with a depth of 378.8km in Papua New Guinea, were examined by two-dimensional principal component analysis (2DPCA) to detect TEC precursor related to the earthquake because TEC precursors usually have shown up in earlier time periods (Liu et al. 2006). A TEC precursor was highly localized around the epicenter from 06:00 to 06:05 on 6 July, where its duration time was at least 5 minutes. Ionizing radiation Radon gas release should be a possibility to cause the anomalous TEC fluctuation e.g. a density variance. The plasma might have large damping at that time to cause TEC fluctuation of short time, and the gas released with small amount in short time period, and 2DPCA could identify short time TEC fluctuation whiles the fluctuation lasted for a long time. Other background TEC anomalies caused by the geomagnetic storm, small earthquakes and non-earthquake activities e.g. equatorial ionization anomaly (EIA) resulted in the small principal eigenvalues, therefore the detection of TEC precursor was regardless of these background TEC anomalies.
Convocatoria
Nombre de la convocatoria:CONVOCATORIA DEL PROGRAMA NACIONAL PARA LA VISIBILIDAD INTERNACIONAL DE LA PRODUCCIÓN ACADÉMICA MEDIANTE EL APOYO PARA TRADUCCIÓN O CORRECCIÓN DE ESTILO DE ARTÍCULOS DE INVESTIGACIÓN 2013-2015
Modalidad:Modalidad 2. Revisión de estilo de artículos completos, o traducción o revisión de estilo de resúmenes de artículos, que hayan sido aprobados para su publicación e integren un número próximo de revistas de la Universidad Nacional de Colombia indexadas en el IBN-Publindex.
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