- Thread starter
- #1

R(I)= log(I/I

_{0})

Where I is the amplitude registered on a seismograph located 100km from the epicenter of the earthquake, and I

_{0 }is the amplitude of a certain small size earthquake. Find the Richter scale ratings of earthquakes with the following amplitudes:

a) 1,000,000I

_{0}

b) 1,000,000,000I

_{0}

Okay so would the solution be

log(100/1,000,000)= -4

log(100/1,000,000,000)= -6

???