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.



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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