In 1985, an earthquake with magnitude 6.9 on the Richter scale was recorded in the Nahanni region of the Northwest Territories. The largest recorded earthquake in Saskatchewan occurred in 1982 near the town of Big Beaver. It had a magnitude of 3.9 on the Richter scale. In order to compare the relative intensities, I, of these two earthquakes, the following formula may be used: 10 10 where mand n are the Richter scale values of each earthquake. Compared to the earthquake in Saskatchewan, the earthquake in Nahanni region of the Northwest Territories, to the nearest whole number, was times stronger. I =