How can i find digitized record of 1968 Tokachi-Oki Earthquake at Hachinohe harbor station?

Hi, I need the digitized data (Acceleration time history) of 1968 Tokachi-Oki Earthquake (Hachinohe harbor). Here you can see the graph of this record (Acc. time history) that used in this...

14 July 2021 4,329 6 View