地磁気センサBM1422GMVによる地磁気計記録.Y.Okamoto 2024-05-22
Preliminary report of magnetometer recordings with the BM1422GMV low-cost geomagnetic sensor
ここ数日の波形データを示します.かなり1日の傾向が見えるようになってきました.また折にふれデータを追加していきます.
Waveform data for the past few days are shown below. The trend of the day is becoming clearer. We will add more data for a while.
![](3-days_record.png)
The followings are supposed;
1) Most of the signal changes are caused by artificial origin; train line signals just 50m behind my house.
2) The quiescence of midnight is caused by the stopping of trains.
3) The whole day trends are resemble; slow rising up at morning to
afternoon and rapid falling down of midnight to early morning
4) The daily changes lay within 50[uT]
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