TY - JOUR A1 - Akhoondzadeh, M. A1 - Parrot, M. A1 - Saradjian, M. R. T1 - Electron and ion density variations before strong earthquakes (M>6.0) using DEMETER and GPS data JO - Nat. Hazards Earth Syst. Sci. J1 - NHESS VL - 10 IS - 1 SP - 7 EP - 18 Y1 - 2010/01/11 PB - Copernicus Publications SN - 1684-9981 UR - https://nhess.copernicus.org/articles/10/7/2010/ L1 - https://nhess.copernicus.org/articles/10/7/2010/nhess-10-7-2010.pdf DO - 10.5194/nhess-10-7-2010 ER -