Counts of occurrence per depth in 三重県 (Mie Pref.) is shown as below graph,
During the 2nd/1st longest silent term of 1km since 1989, 1km curve was overtaken by 10km curve. The count of 1km-40km had each rapid increase induced by the Tonankai Earthquake of 40km in 1944. Some depth count had the accelerated increase after the long silent terms. As a feature of this area, some of the greatest one of this area exists in deeper than 300km of the deep-focus earthquake. The great one is M6.7 of 420km in 1925.
- 1km(red)⋯ The count is the 2nd. There was the longest silent term between 1927-1929(count as 18-19) at that time. Then, the slope of 1km curve became steeper. In 1944-1945, there was a rapid count increase between 61-171. They were caused by M7.9 The 1944 Tonankai Earthquake of 40km in Off the coast of the Southeast Sea (outside of this area). After that, the silnet terms became longer. The longest silent term is between 1989-2004 (count as 356-357). Next, there was the 2nd silent term between 2004-2015. The silent terms are becoming shorter again. The largest one of 1km is M5.9 in 1946(count as 234).
- 10km(yellow)⋯The count is the 1st. 10km curve was following behind 1km curve. Similar to the 1km curve, there were continuous rapid count increases both in 1944/ in 1945 between 30-41/42-50. There was the longest silent term between 1991-1995 (count as 152-153). The start was 2 years later of the one of 1km, and was covered with 1km's longest silent term. The slope of 1km curve became steeper after the longest silent term the same as 1km curve. During the long silent terms including the 1st/2nd of 1km, 10km curve overtook 1km curve. After the overtaking count as 358, the silent terms became a little bit longer. The largest one of 10km is M5.5 in 1998.
- 20km(orange)⋯The count is the 3rd. After the longest silent term between 1919-1924, 20km curve was following behind 10km curve. Similar to the 1km/10km curves, there was a rapid count increase in 1944 between 16-19. The 2nd longest silent term was between 1960-1964 (count as 49-50). After that, the count of 20km was accelerated. Similar to it, 20km count was accelerated after the long silent term between 1986-1989 (count as 79-80). The largest one of 20km is M5.6 in 1968.
- 30km(yellow green)⋯The count is the 5th as same as 50km. 30km curve was following behind 20km as the same as 40km curve. Since 1970, there were the 2nd/the 1st longest silent terms between 1970-1981 (count as 38-39)/1991-2003(count as 46-47). So, 30km curve was delayed from 40km curve, and caught up with by 50km curve. The largest one of 30km is M5.6 in 1944.
- 40km(green)⋯The count is the 4th. 40km curve was following behind 20km/10km curves. M6.2 of 40km and the aftershocks were induced by the M7.9 The 1944 Tonankai Earthquake of 40km in 1944. The M6.2 is the largest one of 40km. After that, 40km count increased steadily. M6.0 of 40km also occurred in 1960 (count as 34). Since 1998, the count has been accelerated (count as since 72).
- 50km(light blue)⋯The count is the 5th as same as 30km. After the longest silent term between 1920-1933, 50km curve was following behind 40km curve. 50km count was also accelerated by the M7.9 in 1944. Then, it has been increasing step by step. The 2nd longest silent term was between 1977-1985 (count as 29-30). The largest one of 50km is M6.5 count as 13.
- others⋯M6.7 of 420km in 1925 is the greatest one of all depths. As the major magnitude in deep-focus earthquakes , there are also M6.2 of 350km in 1926, and M6.0 of 370km in 1970.
