Operation Log
Description is identical as next line unless otherwise noted.

'05.04.02 04:00 JST (UT+9Hours)
1.Present Status on 4/1: Almost calm on Tree-1, Tree-2 and Ground Potential.

0. Real time data is restarted. (11:00)
'05.04.01 04:10 JST (UT+9Hours)

'05.03.31 01:10 JST (UT+9Hours)
1.Present Status on 3/30: Although the "early spring daily pattern (tentative name)" was observed on Tree-2,
almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: Nothing special.

'05.03.30 03:20 JST (UT+9Hours)
1.Present Status on 3/29: Almost calm on Tree-1, Tree-2 and Ground Potential.
   Although anomaliis were observed on 3/20, 25, 26, 27, 29 on Tree-2 as shown below,
   the tendency is alike and it is judged that it was a seasonal daily pattern.
   It is henceforth called "early spring daily pattern (tentative name)".
2. Anomalous Information: The following comment is canceled due to the "early spring daily pattern (tentative name)".
Recent Tree-2 anomalies may be precursor of small scale EQ which occurs near place on the Philippine sea plate within 1 week. depending on the following reason;
Polarity is positive, quick fall down, if small scale, within 1 week.


'05.03.29 01:00 JST (UT+9Hours)

'05.03.28 03:10 JST (UT+9Hours)
1.Present Status on 3/27: Anomalies were observed on Tree-2 and Ground Potential. Tree-1 was calm.
2. Anomalous Information: Recent Tree-2 anomalies may be precursor of small scale EQ which occurs near place on the Philippine sea plate within 1 week. depending on the following reason;
Polarity is positive, quick fall down, if small scale, within 1 week.


'05.03.27 05:10 JST (UT+9Hours)
1.Present Status on 3/26: Anomalies were observed on Tree-2 and Ground Potential. Tree-1 was calm.
2. Anomalous Information: Comment will be uploaded later..

'05.03.26 12:10 JST (UT+9Hours)
1.Present Status on 3/25: Anomalies were observed on all of Tree-1, Tree-2 and Ground Potential.
Comment is uploaded at Menu-1E..
2. Anomalous Information: The following P05-13 is canceled. Comment is uploaded at Menu-1E.
P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.

'05.03.26 09:20 JST (UT+9Hours)
1.Present Status on 3/25: Anomalies were observed on all of Tree-1, Tree-2 and Ground Potential.
Comment will be uploaded later.
2. Anomalous Information: The following P05-13 is canceled. Comment will be uploaded later.
P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.

'05.03.25 01:00 JST (UT+9Hours)
1.Present Status on 3/24: Equipment failure happened, however,
it seems to be almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.24 04:30 JST (UT+9Hours)
1.Present Status on 3/23: Equipment failure happened, however,
it seems to be almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.23 02:40 JST (UT+9Hours)
1.Present Status on 3/22: Almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.
3. Safety Information: No anomalous data which may be precursory signal for big earthquake within 24 hours around Hokkaido, Tohoku, Kanto districts and Izu islands is observed.
4. Comment on relation between recent Toyohashi anomalies and Tide is uploaded at Menu-0. (3/21 17:50)
5. Comment on relation between 3/20 Fukuoka offshore EQ and recent Toyohashi anomalies is uploaded at Menu-0. (3/20 16:50)
6. Ground Potential which is started newly are displayed in one graph as shown below.
Observation method will be uploaded later day.


'05.03.22 01:30 JST (UT+9Hours)
0. Comment on relation between recent Toyohashi anomalies and Tide is uploaded at Menu-0. (3/21 17:50)
1.Present Status on 3/21: Almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.
3. Safety Information: No anomalous data which may be precursory signal for big earthquake within 24 hours around Hokkaido, Tohoku, Kanto districts and Izu islands is observed.
4. Comment on relation between 3/20 Fukuoka offshore EQ and recent Toyohashi anomalies is uploaded at Menu-0. (3/20 16:50)
5. Ground Potential which is started newly are displayed in one graph as shown below.
Observation method will be uploaded later day.


0. Comment on relation between recent Toyohashi anomalies and Tide is uploaded at Menu-0. (3/21 17:50)
'05.03.21 03:10 JST (UT+9Hours)
0. Comment on relation between 3/20 Fukuoka offshore EQ and recent Toyohashi anomalies at Menu-0. (3/20 16:50)
1.Present Status on 3/20: A very big anomaly was observed on Tree-2.
Almost calm on Tree-1 and Ground Potential.
2. Anomalous Information: Although a big anomaly may be precursor of large scale EQ,
I can not judge its seismicity, since fall down curve is too steep.
P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.

0. Comment on relation between 3/20 Fukuoka offshore EQ and recent Toyohashi anomalies at Menu-0. (3/20 16:50)
'05.03.20 04:10 JST (UT+9Hours)
1.Present Status on 3/19: Almost calm on Tree-1 Tree-2 and Ground Potential.

'05.03.19 01:20 JST (UT+9Hours)
1.Present Status on 3/18: Almost calm on Tree-1 Tree-2 and Ground Potential.
2. Anomalous Information: Therefore, P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs
in KANTO
district with M<5, or in Izu Islands with 5.0<M<6.0 by 3/24.

'05.03.18 01:40 JST (UT+9Hours)
1.Present Status on 3/17: Positive side anomalies were observed on Tree-2.
Almost calm on Tree-1 and Ground Potential.
2. Anomalous Information: Tree-2 anomalies on 3/17 may be precursor of EQ which occurs on
Philippine sea plate from polarity, near or middle distance from frequency of anomalies appearance.
If the EQ occurs at near place, scale will be small. If middle distance, middle scale.
Preceding time may be within 1 week.
Therefore, P05-13: Tree-2 anomalies on 3/17 may be a precursor of EQ which occurs in KANTO district with M<5,
or in Izu Islands with 5.0<M<6.0 by 3/24.


'05.03.17 00:30 JST (UT+9Hours)
0. 2005 IWSE is held on 3/15 to 3/17 at University of Electro-Communication in Tokyo Chofu city.
Citizen observers (TBP, MF Band, VHF Band, Satellite image) also participate.
3/15: LP1-27(Toriyama)、3/17:SP-1(Saito)、SP-9(Fukushima)、SP-10(Matsunaga)、SP-11(Uda).
Please visit our Poster session booth. (\5,000 is required for participation)

1.Present Status on 3/16: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.16 03:30 JST (UT+9Hours)
0. 2005 IWSE is held on 3/15 to 3/17 at University of Electro-Communication in Tokyo Chofu city.
Citizen observers (TBP, MF Band, VHF Band, Satellite image) also participate.
3/15: LP1-27(Toriyama)、3/17:SP-1(Saito)、SP-9(Fukushima)、SP-10(Matsunaga)、SP-11(Uda).
Please visit our Poster session booth. (\5,000 is required for participation)

1.Present Status on 3/15: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.15 03:20 JST (UT+9Hours)
0. 2005 IWSE will be held on 3/15 to 3/17 at University of Electro-Communication in Tokyo Chofu city.
Citizen observers (TBP, MF Band, VHF Band, Satellite image) also participate.
3/15: LP1-27(Toriyama)、3/17:SP-1(Saito)、SP-9(Fukushima)、SP-10(Matsunaga)、SP-11(Uda).
Please visit our Poster session booth.

1.Present Status on 3/14: Almost calm on Tree-1, Tree-2 and Ground Potential.

0. 2005 IWSE will be held on 3/15 to 3/17 at University of Electro-Communication in Tokyo Chofu city.
Citizen observers (TBP, MF Band, VHF Band, Satellite image) also participate.
3/15: LP1-27(Toriyama)、3/17:SP-1(Saito)、SP-9(Fukushima)、SP-10(Matsunaga)、SP-11(Uda).
Please visit our Poster session booth.

'05.03.14 01:50 JST (UT+9Hours)
1.Present Status on 3/13: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.13 05:00 JST (UT+9Hours)

1.Present Status on 3/12: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.12 03:10 JST (UT+9Hours)
1.Present Status on 3/11: Almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: Nothing special.
3. Safety Information: No anomalous data which may be precursory signal for big earthquake within 24 hours around Hokkaido, Tohoku, Kanto districts and Izu islands is observed.
4. Ground Potential which is started newly are displayed in one graph as shown below.
Observation method will be uploaded later day.


'05.03.11 01:30 JST (UT+9Hours)
1.Present Status on 3/10: Almost calm on Tree-1, Tree-2 and Ground Potential.

2. Anomalous Information: (1) Since calm condition is continuing in recent several days, I judge that an EQ mentioned in P05-12B below  will not occur.
(2) The following comment mentioned in Item (3) is revised as follows, (3/10 11:50)
An EQ which corresponds to P05-12B occurred on 3/7 20:39 at Hachijo Island west offshore with magnitude M=5.9.

Information from International Association of Earthquake Prediction;
>> 2005-03-07 20:39   31.868E  138.584N  D371.5km M5.9
>> (Tokaido far offshore = Hachijo Island west offshore) According to Hi-net.

(3) I announce EQ prediction as an experiment with spirit of "wide swing to be good but overlooking to be bad".
Please regard when swinging wide, "It was happy that an earthquake did not come."
In addition, please refer to the past verification shown in Menu-3 of Japanese page.
According to it, the rate of a wide swing of the anomalies in + side was 62% and - side was 11%.
  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.
Please refer to Menu-1E for detail.
'05.03.10 01:30 JST (UT+9Hours)
1.Present Status on 3/9: Almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: Since calm condition is continuing in recent several days, I judge that an EQ mentioned in P05-12B below will not occur.
I announce EQ prediction as an experiment with spirit of "wide swing to be good but overlooking to be bad".
Please regard when swinging wide, "It was happy that an earthquake did not come."
In addition, please refer to the past verification shown in Menu-3 of Japanese page.
According to it, the rate of a wide swing of the anomalies in + side was 62% and - side was 11%.

  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.
Please refer to Menu-1E for detail.

'05.03.09 05:00 JST (UT+9Hours)
1.Present Status on 3/8: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.08 05:40 JST (UT+9Hours)
1.Present Status on 3/7: Almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: We carefully watch for P05-12B shown below.
  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.
Please refer to Menu-1E for detail.

'05.03.07 00:40 JST (UT+9Hours)
1.Present Status on 3/6: Almost calm on Tree-1, Tree-2 and Ground Potential.

'05.03.06 05:40 JST (UT+9Hours)
1.Present Status on 3/5: Big anomalies were observed on Tree-1, Tree-2 and Ground Potential.

'05.03.05 07:00 JST (UT+9Hours)
1.Present Status on 3/3: Data seems to be almost calm on Tree-2 and Ground Potential.
Data could not be acquired from Tree-1 due to equipment malfunction.
2. Anomalous Information: We carefully watch for P05-12B shown below.
  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.

'05.03.04 05:10 JST (UT+9Hours)
1.Present Status on 3/3: Data seems to be almost calm on Tree-1, Tree-2 and Ground Potential.
2. Anomalous Information: Comment on Tree-2 anomaly is uploaded at Menu-1E (3/3 07:30).
P05-12 is revised as follows;
  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.

2. Anomalous Information: Comment on Tree-2 anomaly is uploaded at Menu-1E (07:30).
P05-12 is revised as follows;
  P05-12B: Anomalies on 2/20 and 3/2 may be precursor of middle class EQ around KANTO district by 3/9.

'05.03.03 04:50 JST (UT+9Hours)
1.Present Status on 3/2: A big + side anomaly was observed on Tree-2.
Data seems to be almost calm on Tree-1 and Ground Potential.
2. Anomalous Information: Comment on Tree-2 anomaly will be uploaded later.
Now under careful observation for P05-12 mentioned below.

'05.03.02 06:40 JST (UT+9Hours)
1.Present Status on 3/1: Data seems to be almost calm on Ground Potential, Tree-1 and Tree-2.

'05.03.01 06:30 JST (UT+9Hours)
1.Present Status on 2/27: Data acquiring failure occurred during data automatic transfer testing.
Data seems to be almost calm on Ground Potential, Tree-1 and Tree-2.
2. Anomalous Information: Comment on Tree-2 anomaly will be uploaded later.
Now under careful observation for P05-12 mentioned below.
3. Safety Information: No anomalous data which may be precursory signal for big earthquake within 24 hours around Hokkaido, Tohoku, Kanto districts and Izu islands is observed.
4. Ground Potential which is started newly are displayed in one graph as shown below.
Observation method will be uploaded later day.

P05-12: If the anomalies on 2/20 shown below may be precursor of the EQ mentioned above, however, if a big anomaly will be observed again by the middle of March, there is a possibility to occur a big EQ under KANTO area within 1 week after then.
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Special thanks to EARI-San for Tree-1 Graph generation tool and NAMAZUSKI-San for other Graphs.


All of data and description on this Home Page should be used at your responsibility. I and all my concerned colleagues are not responsible to any result which is caused by your action.
[Copyright (C) 2003-4 SAITO Yoshiharu. All rights reserved.]
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Sorry, it may take long time to answer. When you have any question, it will be appreciated, if you could ask to Japanese around you first. I expect that he/she explains about descriptions in Japanese pages of my Home Page.


'05/02 Operation Log is here.
'05/01 Operation Log is here.
'04/12 Operation Log is here.
'04/11 Operation Log is here.