MD-T chart in 長野県南部

MD-T chart in 長野県南部 (Southern Nagano Pref.) 

MD chart in 長野県南部

MD chart  in 長野県南部 (Southern Nagano Pref.) 

Dragon chart in 長野県南部

Dragon chart in 長野県南部 (Southern Nagano Pref.) is as below,

Sum of Magnitude per 1day in 長野県南部

Sum of Magnitude per 1day in 長野県南部 (Southern Nagano Pref.) 

note : Horizontal axis isn't linear.

Distribution of Magnitude in 長野県南部

Distribution of Magnitude in 長野県南部 (Southern Nagano Pref.) iis as below,

Distribution of Depth in 長野県南部

Distribution of Depth in 長野県南部（Southen Nagano Pref.）

Area map of 長野県南部

Area map of 長野県南部 (Southern Nagano Pref.) is defined for epicenter's analysis as below,

Counts of occurrence per depth in 長野県中部

Counts of occurrence per depth in 長野県中部（Central Nagano Pref.）is shown as below graph,

 "Matsushiro Earthquake Swarm" in 1965 accelerated the counts of 1km-20km rapidly. Especially, the count of 1km increased dramatically. After the swarm in 長野県北部（Northen Nagano Pref. ）, there was  both M6.8  in 1984 at the southwest corner of this area and the longest silent term between 1993-1997. 10km curve is getting close to 1km curve since M5.6 of 1km in 1998.  

• 1km (red)…The count is the 1st. There was the rapid increase in 1920. But, the cause is unknown. The end count of 1km was 26. It is near to the start count 28 of 10km of the rapid increase in 1965. After the rapid increase of 1km in 1920, there was the longest silent term at that time between 1920-1922. The next occurrence of 1km was count 28, and it might be one of the aftershock of M7.9 Great Kanto Earthquake. It was occurred only 16 minutes later of the M7.9. Then, the silent terms of 1km was accelerated rapidly until 1932. Since 1935, the count of 1km increased steadily until 1963. The main rapid increase was occurred in 長野県北部（Northen Nagano Pref. ）as  as "Matsushiro Earthquake Swarm" in 1965. Part of them are included in this area, and M6.8 occurred in 1984 as the greatest one of all depths.  The epicenter is located in the corner of this area, and the aftershock was nothing special in this area. The silent terms became longer and longer after it, and there were  the 2nd/1st longest silent terms between 1990-1993/ 1993-1997. Nine months later, M5.6 occurred in 1998. By the M5.6, the silent terms of 1km were accelerated again. Furthermore, it was also accelerated by M5.6 in 2020.          
• 10km (yellow)…The count is the 2nd. 10km curve was following behind 1km curve. Though there was the rapid increase by "Matsushiro Earthquake Swarm" in 1965, the count of 1km increased more. So, 10km curve couldn't have overtaken 1km curve yet. But, the silent terms were accelerated by the M5.6 of 1km in 1998. As a result, the gap between 1km/10km curves is gradually getting closer. The largest one of 10km is M5.6 in 2017.
•  20km(orange)⋯The count is the 3rd.  20km curve was following behind 10km curve. But, after it,  the silent terms became longer suddenly since The count of 20km was also accelerated by  "Matsushiro Earthquake Swarm" in 1965. But, there was the longest silent term between 1976-2005, and the silent terms of 20km became longer.  The latest occurrence was in 2021. The largest one of 20km is M5.2 in 1967.
• others⋯omitted.

MD-T chart in 長野県中部

MD-T chart in 長野県中部（Central Nagano Pref.）

MD chart in 長野県中部

MD chart  in 長野県中部（Central Nagano Pref.）

Dragon chart in 長野県中部

Dragon chart in 長野県中部（Central Nagano Pref.）is as below,

Sum of Magnitude per 1day in 長野県中部

Sum of Magnitude per 1day in 長野県中部（Central Nagano Pref.）

note : Horizontal axis isn't linear.

Distribution of Magnitude in 長野県中部

Distribution of Magnitude in 長野県中部（Central Nagano Pref.）is as below,

Distribution of Depth in 長野県中部

Distribution of Depth in 長野県中部（Central Nagano Pref.）

Area map of 長野県中部

Area map of 長野県中部（Central Nagano Pref.）is defined for epicenter's analysis as below,

Counts of occurrence per depth in 長野県北部

Counts of occurrence per depth in 長野県北部（Northern Nagano Pref.）is shown as below graph,

Most occurrences are occupied with the ones of "unknown details (inknown)" of   "Matsushiro Earthquake Swarm" since 1965. It was occurred around 1km-20km in the narrow area. Even the huge occurrence, only M5.9 is the largest one of 1km before and after  it. The long silent terms of 20km/30km seems to be the sign of it. The start counts of the rapid increases were often near to the count of shallower depth's ones.  

• 1km (red)…The count is the 1st. There was the rapid increase as "Matsushiro Earthquake Swarm" since 1965. Most of them were "unknown" ones with no magnitude data occurred narrow area around "Matsushiro". The epicenters of "unknown" was almost constant until 1950. The constant "unknowns" moved to south  a little, and went into the swarm.  So, the rapid increase of 1km in 1941 seems to be the sign of "Matsushiro Earthquake Swarm" since 1965. The largest one of 1km is M5.9 in 1943. Though M5.9 were also occurred in 1986/in 2011, no more magnitude has been recorded. 
• 10km(yellow)⋯ The count is the 2nd. 10km curve was following behind 1km curve. There was the longest silent term between 1926 - 1935. Right after it, 10km curve increased with steep slope. Then, there was the silmllar increase by M6.1 of 10km in 1941. Then, the silent terms became longer gruadually just before the rapid increase  by "Matsushiro Earthquake Swarm" since 1965. After the rapid increase in 1965, the slope became gentle. There was also the rapid increase of 10km by M9.0 Great East Japan Earthquake in 2011 though the curve change looks like small because of logarithmic axis. M6.7 was induced by the M9.0 in 2011. The M6.7 is the greatest one of all deprhs in this area. Another M6.7 was also occurred in 2014. Before the later M6.7, there was a long silent term of 20km between 2011-2014. It seems to be the sigh of it. 
• 20km(orange)⋯The count is the 3rd. There was the longest silent term of 20km at that time between 1919-1935 as the 3rd one. Then, the silent terms became shorter. Furthermore they were accelerated by the M6.1 of 10km in 1941, and M5.7 of 20 km was occurred in 1947 at the count 12. The count is very near to the count of 10km as the start point of the acceleration when M6.1 was occurred at count 11 n 1941. Right after the M6.7 of 20km, the longest silent term was updated as between 1947-1954 as the 2nd one. The 2nd longest silent term may be the sign of  "Matsushiro Earthquake Swarm" started 1.5 month later in 1965. After the rapid increase of 20km since 1965, the 1st longest silent term of 20km was occurred between 1976-1995 at the count between 55-56. At the count 56 of 1km, the rapid increase of 1km was started in 1935. The latest occurrence of 20km is at count 86 in 2018. At count 87 of 1km, the rapid increase of 1km started in 1941. The largest one of 20km is the M5.7 in 1947. 
• 30km(yellow green)⋯The count is the 4th. There was the longest silent term at that time between 1941-1966 as the snd one at the count between 3-4. At the count of 1km between 2-3, the 3rd longest silent term of 20km was occurred between 1919-1935. The 2nd longest silent term of 20km between 1947-1965 was covered with the 2nd longest one of 30km between 1941-1966. The latest occurrence was in 1968. Sine 1968, the 1st longest silent term of 30km has been extended. The largest one of 30km is M4.5 in 1936. 
• others⋯omitted.

Counts of occurrence per depth in 長野県北部（Northern Nagano Pref.）since 1970 is shown as below graph (Each count is reset as started since 1970) , 

MD-T chart in 長野県北部

MD-T chart in 長野県北部（Northern Nagano Pref.）

note : Most of the data of "Matsushiro Earthquake Swarm" since 1965 are "unknown" data with no magnitude data. So, most of them are no plot.  Even so, there were very few data including "unknowns" before the swarm as only 1-4 times per a year between 1959- 1964 in fact.  

MD chart in 長野県北部

MD chart in 長野県北部（Northern Nagano Pref.）

note : Most of the data of "Matsushiro Earthquake Swarm" are "unknown" data with no magnitude data. So, most of them are no plot. Even so, many plots of them are still there as small balls.  

Dragon chart in 長野県北部

Dragon chart in 長野県北部（Northern Nagano Pref.）is as below,

The quantities per depth are 1km>>10km>>20km>>30km>>40km. The plots among 20km/30km/40km are located almost on a line with a slope of 1 (see "Analysis for the chart of maximun Magnitude per the depth of epicenter (Dragon Chart)").

Sum of Magnitude per 1day in 長野県北部

Sum of Magnitude per 1day in 長野県北部（Northern Nagano Pref.）

note : Horizontal axis isn't linear. Most of date are skipped as the horizontal label. All "unknown" data are plotted with no peak because of no magnitude data. So, most of the data of "Matsushiro Earthquake Swarm" since 1965 have no peak. 

Distribution of Magnitude in 長野県北部

Distribution of Magnitude in 長野県北部（Northern Nagano Pref.）is as below,

As the most of  "Matsushiro Earthquake Swarm" since 1965 are recorded as "unknown" with no magnitude data, they are not included in the below graph. The peak around ln M=0.6 (M=2.6) is consisted mainly by the data after 2011 induced by M9.0 Great East Japan Earthquake.

  

Distribution of Depth in 長野県北部

Distribution of Depth in 長野県北部（Northern Nagano Pref.）

Most of  "Matsushiro Earthquake Swarm" since 1965 are recorded as "unknown" with no magnitude data. They are counted as 1km in my blog as same as other area. So, the 1km's count almost become 10,000 times far more than 10km's one. In most areas with enough data, the both count of 1km/10km tend to become almost same counts. Or, 1km's count tend to become more a lille bit than 10km's ones. This case is abnormal one. 

Area map of 長野県北部

Area map of 長野県北部（Northern Nagano Pref.）is defined for epicenter's analysis as below,

There was "Matsushiro Earthquake Swarm" since 1965. The number of only felt earthquakes reached  more than 60kp between 1965-1968.  There are only 1000 data plots until middle of Oct/1965. 

The below area map of 長野県北部（Northern Nagano Pref.）is also plotted only 1000 data between 1980 - Sep/2011 or so on. Even though there is no main part of  "Matsushiro Earthquake Swarm", the blank area of Southernwest Nagano Pref. was covered with new ones.

 

Counts of occurrence per depth in 山梨県・富士五湖

Counts of occurrence per depth  in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）is shown as below graph,  

M7.9 Great Kanto Earthquake induced the rapid increase of 1-30km in1923. Especially, 1km curve increased rapidly. But, 20km/10km curves increased steadily after the increases in 1923. The start/end points of the rapid increase seems to effect the other start/end points of other depths.

 

• 20km (orange)…The count is the 1st. M7.9 of 20km was occurred in Western Kanagawa in 1923. The M7.9 was named as "Great Kanto Earthquake", ant it is the greatest one of all depths. It was occurred on the triple junction of 10km/20km/30km curves. It means it was occurred at the same count of them as count 5. The M7.9 was induced the rapid increases of 1km-30km. After them, 20km curve increased steadily.  count has been increasing steadily. During the longest silent term, 20km curve overtook 1km curve in 1996. After the overtaking, 20km curve accelerated in 1996. It was also accelerated by M9.0 Great East Japan Earthquake in 2011. 
• 10km (yellow)…The count is the 2nd. There were 3 major rapid increases of 10km curve. The first one was occurred by the M7.9 of 20km in 1923, and 20km curve increased steadily until 1928. Since 1928, there was the 2nd longest term of 10km at that time between 1928-1930. Just after it, the next major rapid increase of 10km was occurred in 1930. It was induced by M7.3 of 1km in Northern Izu in 1930. By this increase, 10km curve overtook between 1930-1950 temporary. After overtaken by 20km again, the silent terms of 10km became longer. The longest one of 10km is 1979-1983. Then, the silent terms become shorter again gradually until 2011. The latest major rapid increase of 10km was induced by M9.0 Great East Japan Earthquake. Though the gap between 20km and 10km curves became smaller, 10km curve is still following behind 20km curve. The largest one of 10km is M6.4 in 2011.
• 1km(red)⋯The count is the 3rd. There were the rapid increase of 1km curve caused by the M7.9 of 20km in 1923. M6.8 was occurred as the first aftershocks in 1923, and is the largest one of 1km (The epicenter is outside of this area). Then, 1km curve has been increased step by step until 2020. The 1st longest silent term is updated as between 1983-1994. During it, 1km curve was overtaken by 20km.  Furthermore, it was also overtaken by 10km curve in 2011. 
• 30km(yellow green)⋯The count is the 4th. There was the rapid increase by the M7.9 of 20km. Then, there was  a continueing earthquakes of 30km in 1939. The cause is unknown. The end's count of 30km was 35. This count is near the count of 1km at M7.3 in 1924. The 1km count was accelerated by the M7.3. 10km's overtaking point was count 33, ant it was also near the count of 30km's end count. The longest silent term of 20km was between 1943 - 1947, and the count was between 67-68. On the other hand, there was the long silent term of 30km, and the count was between 66-67. They were very near. The acceleration start of 30km count curve between 84-90 in 1988 corresponds with the acceleration end of 1km count curve between 66-81 in 1930. The latest occurence of 30km is in 2025 as 132 count. It's near the start count of 20km in 1976 as 135. 30km curve might have the rapid increase when the count goes over 135. The largest one of 30km is M5.9 in 1931.
• 40km(green)⋯The count is the 5th. There were 2 major rapid increases both in 1923 and in 1931. But, after these rapid increases, the silent terms became longer and longer. The longest silent term of 40km is between 1949-2020. The count of the end point of 30km is 29. The count is near to the cross point of 10km/30km curves overtaking in 1931 as the 10km's count of 33. There might be the rapid increase of 40km in the not too distant future. The largest one of 40km is M6.3 in 1929.  
• others⋯omitted.

MD-T chart in 山梨県・富士五湖

MD-T chart in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

MD chart in 山梨県・富士五湖

MD chart in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

note: As you know, M't Fuji is a very famous volcano.

Dragon chart in 山梨県・富士五湖

Dragon chart in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

Sum of Magnitude per 1day in 山梨県・富士五湖

Sum of Magnitude per 1day in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

note : Horizontal axis isn't linear.

Distribution of Magnitude in 山梨県・富士五湖

Distribution of Magnitude in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

Distribution of Depth in 山梨県・富士五湖

Distribution of Depth in 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）

Area map of 山梨県・富士五湖

 Area map of 山梨県・富士五湖（Yamanashi Pref. & Fuji Five Lakes area）is defined for epicenter's analysis as below,

Counts of occurrence per depth in 福井県嶺南地方

Counts of occurrence per depth in 福井県嶺南地方（Reinan region, Fukui Pref.）is shown as below graph,  

Some of the 1km's count of the accelerations may be linked with 10km/20km's one as shown the blue line in the below graph. 10km curve overtook 1km curve with the steady increases during the longest silent term of 1km.  The largest ones were occurred in deep area between 360-370km as M5.9-M6.1.

• 10km (yellow)…The count is the 1st. The count has been increasing steadily. 10km curve overtook 1km curve in 2011. There were some combinations of long silent term and accelerated terms. These counts of both 10km and 1km are seemed to be linked as showed as the blue horizontal lines in the graph above. The acceleration of 10km in 2011 was occurred around the end of the longest silent term of 1km in 2011. The largest one of 10km is M5.2 in 1963. After the M6.3, the silent terms of 1km became longer suddenly.
• 1km(red)⋯The count is the 2nd. There was the rapid increase by M7.3 of 20km of Northern Kyoto outside of this area in 1927. The start count of 1km was linked with 20km's acceleration of the count in 1960. The end count of 1km was linked with 10km's acceleration of the count in 1983. The occurrence of 1km in 2011 is the latest one as the end of the longest silent term of 1km between 1991-2011. The largest one of 1km is M5.3 in 1937.
• 20km(orange)⋯The count is the 3rd. There was the longest silent term of 20km between 1973-2002. After it, there was the acceleration of 20km between 2007-2011. By this acceleration, the count became closer with the end count of the rapid increase of 1km in 1927.  There might be the acceleration of 20km after the 20km count becoming more than the start count of 10km's acceleration in 1960. The largest one of 20km is M4.7 in 1944.
• 30km(yellow green)⋯The count is the 3rd. But, it's only 4 times. The largest one of 30km is M4.9 in 1931.
• 40km(green)⋯The count is only 2 times. The largest one of 40km is M2.9 in 2025.
• others⋯350km/360km/370km's occurrence was each 2 or 3 times. But, each the largest one is  M5.4/M5.9/M6.1. All of them are larger than one's of othes (1km-40km). The largest one of all depths is M6.1 of 370km.

MD-T chart in 福井県嶺南地方

MD-T chart in 福井県嶺南地方（Reinan region, Fukui Pref.）

MD chart in 福井県嶺南地方

MD chart in 福井県嶺南地方（Reinan region, Fukui Pref.）

Dragon chart in 福井県嶺南地方

Dragon chart in 福井県嶺南地方（Reinan region, Fukui Pref.）

Sum of Magnitude per 1day in 福井県嶺南地方

Sum of Magnitude per 1day in 福井県嶺南地方（Reinan region, Fukui Pref.）

note : Horizontal axis isn't linear.

Distribution of Magnitude in 福井県嶺南地方

Distribution of Magnitudein 福井県嶺南地方（Reinan region, Fukui Pref.）

Distribution of Depth in 福井県嶺南地方

Distribution of Depth in 福井県嶺南地方（Reinan region, Fukui Pref.）

Area map of 福井県嶺南地方

福井県嶺北地方（Reinan region, Fukui Pref.）is defined for epicenter's analysis as below,  

Counts of occurrence per depth in 福井県嶺北地方

Counts of occurrence per depth in 福井県嶺北地方（Reihoku region, Fukui Pref.）is shown as below graph,  

• 1km (red)…The count is the 1st. There were 2 major rapid increases both in 1927 and in 1948. The first one was caused by M7.3 of 20km of Northen Kyoto  (outside of this area).   After the rapid increase of 1km in 1927, the silent terms became longer and longer.  Then, there was the anoher major rapid increase of 1km in 1948 by M7.1  of 1km in 1948.  Then, the silent terms became longer and longer as same as before. After the longest silent term (at that time) of 1km between 1965-1968, the occurrences of 1km was acceleratated temporary by M7.0 of 10km in 1961. The next acceleration was occurred by M5.9 of 10km in 1972 after the longest silent term (at that time) of 1km between 1969-1972. Since these accelerations of 1km, the silent terms became longer and longer. The 1st longest term of 1km is between 1992- 2003. After it, the  silent terms became shorter gradually. The M7.1 of 1km greatest one of all depths.
• 10km(yellow)⋯The count is the 2nd. There was the rapid increase by the M7.1 of 1km in 1948 after the 2nd longest silent term between 1943-1948 (The first one is between 1919-1934). The rapid increased count of 10km became 103 at the next rapid increase by M7.0 in 1961. The count of 10km is similar with the conut  97 of 1km at M7.1.  There was the temporary increase of 10km by the M7.0 of 10km in 1961, and there was the 3rd longest silent term (at that time) of 10km between 1966-1970. Then, M5.9 of 10km was occurred as the 2nd scale magnitude of 10km. The silent terms of 10km became shorter and shorter. In result, the count of 10km is approaching to 1km's one. The largest one of 10km is the M7.0 in 1961.
• 20km(orange)⋯The count is the 3rd. There is the major rapid increase of 20km by the M7.1 of 1km in 1948 after the 2nd longest silent term between 1943-1948 at that time (The first one was between 1919-1931). After the 2nd longest silent between 1963-1972 at that time, there was the temporary acceleration of the occurrences of 20km since 1972 at the count 24. The start count of 20km is similar with the one of the rapid increase of 1km in 1927 as count 21. Then, there was the longest silent term of 20km between 1973-2011. The largest one of 20km is M4.8 in 1957. 
• 30km(yellow green)⋯The count is the 4th. But, the count is only 4 times. The latest occurrence was in 1961, and the longest silent term is extending now. The largest one of 30km is M4.5 in 1961. 
• others⋯There is no occurrence in other depths. 

[Information] Change OS from Windows to Chrome

 According to the change of the usage OS from Windows to Crome,  some fonts colors have been changed from the conventional ones in my blogs. As you know, Windows 10 has stopped their support. So, I have decided the change of my main PC from Windows PC to Chromebook.

To keep the PC performance as far as possible, I have selected Chromebook plus. I would like to share my impression of the change.

<Merits>

• Stress free⋯Chrome PC can start up immediately only with the input password/finger touch. The improvement is dramatic due to almost no waiting time of the start up. The response times seem to be faster as far as I used.
• Security up⋯In general, Chromebooks are more safety due to the lower risk of malwares.
• cost of PC price⋯As I selected a Chromebook plus model, it may not be correct. But, I feel it cheeper.
• Escape from Windows softs⋯ I have already tried it for Web Browser/mail software. But, due to the stop of the technical support for Windows 10, I need to accelerate my activity and to rethink from the ground up it including OS and so on. But, for example, personal printer can be replaced by online printer in convenience stores. My personal mail adress could be shared with G mail. Excel could be shared the functions to Google  Sheets as far as not so complicated ones (I just use only free functions). Anyway, at this moment, I have been able to escape from subscriptions.
• Gemini (AI)⋯Gemini is very useful in stead of manuals. It can be understood what I would like to ask. It's nice for the assistant of English translation. My poor English may be caused by the self translation in stead of dumping  all the work to AI.
• Restore session⋯Even if the power becomes off, the sessions should be recoverd soon and easily in general. How many times have I lost all working data by sudden power off!
• AUE⋯ Chrome OS and security may have the update for 10 years for new models since 2021 sold.

<Demerits>

• Required online work⋯most functions are required on line status.
• Differrence of keyboard placement⋯It is different from Windows ones. It should be requied some my patience until I get used to it.
• Differrences from Windows⋯There are many ones, and some degree of limitation of functions. They may require some time  until I get used to it.
• Few models⋯ As the choice of Chrome models may be  minor for personal usages especially required for high specifications, we may not select so many models to buy.
• Usage restrictions⋯ No usage is availabe for software/appilications for Windows/mac OS.
•  low specification⋯Most models have only low specification of CPU/small memory . So, there is the limitation for the selection of Chromebook models.
• limitation of usages of outer HDD⋯I'm not sure because of no usage at this moment.
• small inner memory
• unsuitable for hard work⋯CPU specifications are not so high. It's to be required the specification what you want to use. It's hard to use heavy tasks like as video editing, graphic processing, or online games with high quality/high respose time required.

MD-T chart in 福井県嶺北地方

MD-T chart in 福井県嶺北地方（Reihoku region, Fukui Pref.）

MD chart in 福井県嶺北地方

MD chart in 福井県嶺北地方（Reihoku region, Fukui Pref.）

Dragon chart in 福井県嶺北地方

Dragon chart in 福井県嶺北地方（Reihoku region, Fukui Pref.）

Sum of Magnitude per 1day in 福井県嶺北地方

Sum of Magnitude per 1day in 福井県嶺北地方（Reihoku region, Fukui Pref.）

note : Horizontal axis isn't linear.

Distribution of Magnitude in 福井県嶺北地方

Distribution of Magnitudein 福井県嶺北地方（Reihoku region, Fukui Pref.）

Distribution of Depth in 福井県嶺北地方

Distribution of Depth in 福井県嶺北地方（Reihoku region, Fukui Pref.）

Area map of 福井県嶺北地方

福井県嶺北地方（Reihoku region, Fukui Pref.）is defined for epicenter's analysis as below,  

Counts of occurrence per depth in 石川県加賀地方

Counts of occurrence per depth in 石川県加賀地方（Kaga region, Ishikawa Pref.）is shown as below graph,  

10km curve was following behind 1km curve.  At M7.0 of 10km in 1948, the count of 10km reached count of 15 near the 1km's count 14 just before the 2nd longest silent term of 1km between 1952-1961. Then, 10km curve had the 1st longest silent term between 1961-1978. There was another rapid increase with gentle slope and the 3rd longest silent term between 1986-1995. The count of 10km became 24 in 1995. This count of 10km is near the count of 1km as 20 at M7.1 in 1948. Furthermore, The 10km's count of becoming the silent term over 3 months after the rapid increase in 2002 was 54. And 1km's count of becoming the silent term over 3 months after the rapid increase with gentle slope since 1961 was 51. These counts are alsp near.

 

• 10km (yellow)…The count is the 1st. 10km curve was following behind 1km curve before M9.0 Great East Japan Earthquake in 2011.  There was the steep slope of 10km since Apr/2013. It may be induced by M6.3 of 20km in Awaji Island just before it. 10km curve became fitting along with 1km curve before the M9.0. Then, there was the rapid increase of 10km by the M9.0 in 2011, and 10km curve overtook the 1km curve. The largest one of 10km is M7.0 in 1961.
• 1km (red)…The count is the 2nd. Before the M9.0, the rank was the 1st. There was the rapid increase by M7.1 of 1km named as "Fukui Earthquake" in 1948. There was the another increase with the speep slope by M7.0 of 10km in 1961 after the 2nd longest silent term between 1952-1961. By these increases, the count of 1km became 51 times just before the 1st longest silent term of 1km. The count of 1km is the almost same as the count of 10km becoming the silent term over 3 months after the rapid increase in 2002. The silent terms of 1km is becoming shorter gradually with gentle slope since the 1st one. During these long silent terms, 1km curve was overtaken by 10km curve with the rapid increase just after the M9.0 in 2011.  The M7.1 Fukui Earthquake in 1948 is the greatest one of all depths.
• 20km(orange)⋯The count is the 3rd. 20km curve was following behind 10km curve. There was the longest silent term between 1996-2003. The latest occurrence was in 2021. The largest one of 20km is M4.3 in 1930.
• 30km(yellow green)⋯The count is the 4th. But, it is only one occurrence.
• others⋯There is no occurrence in other depths.