Ayukawa 642/031 RLR(1963) is 9.6m below Attached BM
Documentation added 2009-05-05
From the dataset plot there appears to be a rising trend at this station.
Documentation added 2011-02-22
Profile buddy checks well with Ofunato II.
Documentation added 2012-02-21
A massive earthquake magnitude 9.0 occurred at 14:46 JST (05:46 UTC) on Friday 11th March 2011 with the epicenter approx. 70 km east of the Oshika Peninsula of Tohoku. It was the most powerful known earthquake ever to have hit Japan. The earthquake triggered tsunami waves up to 40.5m travelling up to 10km inland. As is obvious from the data plot the tide gauge site was badly effected. The data following the tsunami is flagged.
Marine Department Japan Meteorological Agency Ote-machi, Chiyoda-ku Tokyo