St. Mary's 170/163 RLR(1997) is 11.3m below TGBM bolt
Documentation added 2001-01-02
Recent work on vertical land movements in the UK can be found from the University of Nottingham web site: http://ukcogr.iessg.nottingham.ac.uk/~eosi/
Documentation added 2012-12-13
Possibly due to rounding the annual mean for the RLR year 1997 is 3.174m in the database.As a result the RLR factor has changed from 3.876m to 3.875m and the height of MSL to RLR has changed from 7.05m to 7.049m.
Documentation added 2015-06-02
There were problems with pressure loss throughout the year with readings >60mm low in places. TGI were at site 27.09.14 to carry out general maintenance and survey the site for a new tide gauge once harbour works have been completed.
British Oceanographic Data Centre National Oceanography Centre Joseph Proudman Building, 6 Brownlow Street Liverpool L3 5DA