... 15, 16, 26 , 27 , 29 Seismic zonation factor 121 Seismic zone 54Seismic zoning maps 36Seismicity 46, 47, 48, 54Seismogram 16, 27 , 29 Seismograph 2, 23 , 26 , 27 , 28 , 29 Seismologists 26 Seismology ... 73Standard earthquake 54Standard Penetration 39Standard penetration test 67, 69Standard Wood-Anderson seismograph 23 , 29 Stiffness 38, 40, 41, 42 Strike 12, 19, 20 , 21 , 22 , 24 , 29 Strike-slip earthquake ... 107, 1 12, 113Shillong Plateau 33Significant earthquakes 4Simplified procedure 67Single-degree-of-freedom 118Slides 90, 97, 98, 99, 1 02 Skudes 97Slip 12, 17, 19, 21 , 22 , 24 , 26 , 28 , 29 Slip...