Question

Is there any alternative method to find the intensity of earthquakes

Answer 1

If the object moves and identify the shake when it comes. Each number on the magnitude scale indicated an earthquake 10 times stronger than the last—which means the quake strength between each increment of one on the scale grows as the numbers climb. 

Today, earthquake magnitude is measured using another logarithmic system—usually called Moment Magnitude or just Magnitude—that's calibrated to the Richter Scale but can measure bigger quakes than the Richter Scale could. And while it might not be the most intuitive system, it's a far more useful one than a linear scale would be.