Receiver Operating Characteristic curves of the seismo-ionospheric precursors in GIM TEC associated with magnitude greater than 6.0 earthquakes in China during 1998-2013.

Wednesday, 17 December 2014
Chi-Hsuan Huang1, Yuh-Ing Chen2, Jann-Yenq G Liu2 and Yen hao Huang2, (1)Institute of Space Science National Central University, Jhongli, Taiwan, (2)NCU National Central University of Taiwan, Jhongli, Taiwan
Statistical evidence of the Seismo-Ionospheric Precursors (SIPs) is reported by statistically investigating the relationship between the Total Electron Content (TEC) in Global Ionosphere Map (GIM) and 56 M≥6.0 earthquakes during 1998-2013 in China. A median-based method and a z test are employed to detect the overall earthquake signatures. It is found that a reduction of positive signatures and an enhancement of negative signatures appear simultaneously on 3-5 days prior to the earthquakes in China. Finally, receiver operating characteristic (ROC) curves are used to measure the power of TEC for predicting M6.0 earthquakes in China.