Uchiura 642/118 RLR(1974) is 8.3m below Attached BM
Documentation added 1993-07-12
Uchiura 642/118 RLR(1974) is 8.3m below Attached BM Where there are two benchmarks with the same name the later one is marked with a suffix. RLR (1974) is now 9.262m below Attached BM (i)
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. 70km east of the Oshika Peinisula Tohoku. It was the most powerful known earthquake ever to hit Japan and triggered a tsunami with waves up to 40.5m travelling up to 10km inland.
Marine Department Japan Meteorological Agency Ote-machi, Chiyoda-ku Tokyo