〜  Radio Wave Observation  〜

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Φ Observation data plot (last 10 days)　→　Numerical data (with missing period, data interval change, sampling interval: 10 or 20 seconds)

Observation Point: Sakai City, Osaka, Japan

1. Sakai City, West, vertical polarization      

2. Sakai City, South, vertical polarization      

Observation Point: Central Toyama City, Toyama Prefecture, Japan

1. Toyama City, Southwest, horizontal polarization      

2. Toyama City, Southeast, horizontal polarization      

3. Toyama City, Northeast, horizontal polarization      

4. Toyama City, Southwest, vertical polarization      

5. Toyama City, Southeast, vertical polarization      

6. Toyama City, Northeast, vertical polarization      

Observation Point: Yatsuo Town, Toyama City, Toyama Prefecture, Japan

1. Yatsuo Town, Northeast, horizontal polarization      

Observation Point: Iwata City, Shizuoka Prefecture, Japan

1. Iwata City, Northeast, horizontal polarization      

2. Iwata City, Northeast, vertical polarization      

3. Iwata City, Northwest horizontal polarization      

4. Iwata City, Northwest vertical polarization      

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Φ Plot of resampled data of observations　→　Numerical data (completed missing period, resampling at an equal interval, sampling interval: 120 seconds)

Observation Point: Central Toyama City, Toyama Prefecture, Japan

1. Toyama City, Northeast, horizontal polarization, Aomori Broadcasting Station (86.0MHz)      

2. Toyama City, Northeast, vertical polarization, Suzu Broadcasting Station (81.9MHz)      

3. Toyama City, Northeast, horizontal polarization, Niigata Broadcasting Station (82.3MHz)      

4. Toyama City, Southeast, horizontal polarization, Iida Broadcasting Station (77.4MHz)      

Observation Point: Yatsuo Town, Toyama City, Toyama Prefecture, Japan

1. Yatsuo Town, Northeast, horizontal polarization, Aomori Broadcasting Station (86.0MHz)      

2. Yatsuo Town, Northeast, vertical polarization, Suzu Broadcasting Station (81.9MHz)      

3. Yatsuo Town, Northeast, horizontal polarization, Niigata Broadcasting Station (82.3MHz)      

Observation Point: Iwata City, Shizuoka Prefecture, Japan

1. Iwata City, Northwest horizontal polarization, Tsu Broadcasting Station (78.9MHz)      

Φ Comparative plot of representative past data of observations and earthquake, meteorological, and ionospheric data

Northeast direction from Toyama City

Tokai area