TY - JOUR A1 - Xu, T. A1 - Wu, J. A1 - Zhao, Z. A1 - Liu, Y. A1 - He, S. A1 - Li, J. A1 - Wu, Z. A1 - Hu, Y. T1 - Brief communication "Monitoring ionospheric variations before earthquakes using the vertical and oblique sounding network over China" JO - Nat. Hazards Earth Syst. Sci. J1 - NHESS VL - 11 IS - 4 SP - 1083 EP - 1089 Y1 - 2011/04/11 PB - Copernicus Publications SN - 1684-9981 UR - https://nhess.copernicus.org/articles/11/1083/2011/ L1 - https://nhess.copernicus.org/articles/11/1083/2011/nhess-11-1083-2011.pdf DO - 10.5194/nhess-11-1083-2011 ER -