Measuring the distance on the seismograph between the P and S waves in millimeters) gives the numerical value of the time difference (in seconds) between the arrival of the primary and secondary waves. This time difference between the arrival of the Pand Swaves is called Dt. Using the logarithmic formula: , scientists can estimate the magnitude of an earthquake.

This Ms 8.0 earthquake was located in the region of Tonga in the southwest Pacific and occurred at relatively shallow depth (31 km). The large amplitude, long period (~20 sec) waves on the seismogram, arriving approximately 20 m

Question

Measuring the distance on the seismograph between the P and S waves in millimeters) gives the numerical value of the time difference (in seconds) between the arrival of the primary and secondary waves. This time difference between the arrival of the Pand Swaves is called Dt. Using the logarithmic formula:  , scientists can estimate the magnitude of an earthquake. 


This Ms 8.0 earthquake was located in the region of Tonga in the southwest Pacific and occurred at relatively shallow depth (31 km). The large amplitude, long period (~20 sec) waves on the seismogram, arriving approximately 20 m

anonymous · Answer

formula