Sheerness site history

History summary

Station name Sheerness
Country UK
Latitude of measuring point 1973 onwards: 51° 26' 32.0" N
1963-1973: 51° 26' 44" N
1962: 51° 27' N
1955-1961: 51° 26' 35" N
Longitude of measuring point 1973 onwards: 00° 44' 35.0" E
1963-1973: 00° 44' 42.5" E
1962: 00° 45' E
1955-1961: 00° 45' 00" E
OS grid ref. of measuring point TQ 9073 7504
Datum reference All data refer to Admiralty Chart Datum (ACD)
ACD = ODN -2.90m
Time reference GMT (hours 00-23)
Contributor Environment Agency Anglian Regional Office,
Kingfisher House,
Goldhay Way, Orton Goldhay,
Peterborough,
Cambridgeshire, PE2 5ZR
Instrument type 1955 - Lege gauge installed on Cornwallis Jetty.
1962 - Munro gauge installed at Garrison Point.
1963 - Munro gauge resited 22.5m south of previous location.
17/04/1973 - Munro gauge disconnected for maintainance.
17 - 19/04/1973 - Temporary Munro gauge used in Ro/Ro hut.
19/04/1973 - Munro gauge reconnected at Garrison Point.
21/05/1973 - New Munro gauge installed on Ro/Ro Jetty.
1980 - Ott pneumatic gauge replaced Munro gauge.
1983 - Aanderra gauge installed, to replace Ott gauge.
1986 - Dataring Bubbler system installed.
Site of measuring point Below tide gauge building
Position of tide gauge building TQ 9074 7542 - Brick tide gauge building on jetty, west side of Garrison Point
Observational periods 1952,1958,1965-1975,1980-2020

Benchmark descriptions

Benchmark OS grid ref. Description Height above ODN (m)
TGBM TQ 9080 7549 Flush bracket 11859, Garrison Point Fort, south angle, south west building. 4.632
Aux1 TQ 9133 7523 Flush bracket G.4790, on house, north west angle, north face. 4.486
Aux2 TQ 9115 7533 Wall on south west side of road, north east angle. 3.339
Aux3 TQ 9147 7516 PA Bolt disused church, south west side of road, east face, north east angle. 4.413
NBM TQ 9073 7542 Rivet curb W side of jetty opp. T.G. Building 5.275
NRABM TQ 9074 7542 Bolt SE corner of jetty 5.280

ODN = Ordnance Datum Newlyn

Parameters

Please Note: All parameters listed below are sea level measured in metres. Different parameter codes represent different gauges. For an explanation of the codes, please see the BODC parameter dictionary.

Period Parameters Completeness index (%) Sample interval
1952 ASLVZZ01 100 60 minutes
1958 ASLVZZ01 100 60 minutes
1965 ASLVZZ01 90 60 minutes
1966 ASLVZZ01 98 60 minutes
1967 ASLVZZ01 100 60 minutes
1968 ASLVZZ01 35 60 minutes
1969 ASLVZZ01 66 60 minutes
1970 ASLVZZ01 86 60 minutes
1971 ASLVZZ01 100 60 minutes
1972 ASLVZZ01 100 60 minutes
1973

ASLVZZ01

ASLVZZ01

39 (January to May)

61 (May to December)

60 minutes
1974 ASLVZZ01 99 60 minutes
1975 ASLVZZ01 79 60 minutes
1980 ASLVZZ01 33 60 minutes
1981 ASLVZZ01 77 60 minutes
1982 ASLVZZ01 99 60 minutes
1983 ASLVZZ01 84 60 minutes
1984 ASLVZZ01 100 60 minutes
1985 ASLVZZ01 99 60 minutes
1986

ASLVZZ01

ASLVBG02

79 (January to October)

19 (October to December)

60 minutes
1987 ASLVBG02 91 60 minutes
1988 ASLVBG02 100 60 minutes
1989 ASLVBG02 100 60 minutes
1990 ASLVBG02 100 60 minutes
1991 ASLVBG02 100 60 minutes
1992 ASLVBG02 100 60 minutes
1993 ASLVBG02 100 15 minutes
1994 ASLVBG02 99 15 minutes
1995 ASLVBG02 100 15 minutes
1996 ASLVBG02 98 15 minutes
1997 ASLVBG02 98 15 minutes
1998 ASLVBG02 100 15 minutes
1999 ASLVBG02 98 15 minutes
2000 ASLVBG02 95 15 minutes
2001 ASLVBG02 97 15 minutes
2002 ASLVBG02 83 15 minutes
2003 ASLVBG02 99 15 minutes
2004 ASLVBG02 100 15 minutes
2005 ASLVBG02 100 15 minutes
2006 ASLVBG02 98 15 minutes
2007 ASLVBG02 94 15 minutes
2008 ASLVBG02 97 15 minutes
2009 ASLVBG02 99 15 minutes
2010 ASLVBG02 99 15 minutes
2011 ASLVBG02 100 15 minutes
2012 ASLVBG02 99 15 minutes
2013 ASLVBG02 100 15 minutes
2014 ASLVBG02 100 15 minutes
2015 ASLVBG02 100 15 minutes
2016 ASLVBG02 100 15 minutes
2017 ASLVBG02 100 15 minutes
2018 ASLVBG02 100 15 minutes
2019 ASLVBG02 100 15 minutes
2020 ASLVBG02 January 15 minutes

Quality assessment

All data have been compared with the current Harmonic Constants library, and residuals checked. Records have been visually inspected for spikes, datum shifts and timing errors.
Where there are problems with the primary channel, data may be available from the backup channel. Please contact enquiries@bodc.ac.uk for more information.
In October 1986 the Dataring system was installed. The bubbler gauge (ASLVBG02) replaced the Ott gauge (ASLVZZ01). There is a gap in the file where the gauge was changed.
1993 - The processing of the 1993 file has left a null value at the start of the file (00:00 hours 01/01/1993). This is due to the sampling interval changing from 60 to 15 minutes and the first data point being too far from 00:00 to interpolate.
February 2003 - File output has been altered so that all values fall on the quarter hour and gaps are filled in with null values, marked with an 'N' flag.
March 2003 - Residuals (observed minus predicted sea level values, measured in metres) now included in the file output.
On 27/01/2012 a new data logger was installed. Tests were carried out to ensure the logger was functioning correctly, resulting in some data being lost.
November 2012 - The file output has been altered to reflect the Contributor name change from Proudman Oceanographic Laboratory to National Oceanography Centre, Liverpool. Also, the Parameter code has been improved and now uses a controlled vocabulary.

Missing and suspect data have been reported on the following day numbers:-

Period Parameter Missing data Suspect data
1952 ASLVZZ01 None 012,018,028-030,040-041,044,047,058-059,092,148-149,185-187,190,282,286,300,315,336-337,348-349
1958 ASLVZZ01 None 010,030,036,052,082,085,102,104,112,116,171-174,208,211-218,224,263-265,278,280,283,316,339,349,363
1965 ASLVZZ01 305-340 023,144-150,219,277-282
1966 ASLVZZ01 138-139,345,360-363 001,033,232,270-271,319
1967 ASLVZZ01 None 265,274,329,349
1968 ASLVZZ01 127-366 None
1969 ASLVZZ01 001-125 None
1970 ASLVZZ01 313-365 124-125,176,238-241,267-271
1971 ASLVZZ01 None 036-038,065-067,228-230,365
1972 ASLVZZ01 None 054-058,093,149,305,366
1973 ASLVZZ01 None 247,254
1974 ASLVZZ01 007-008,288-289 304,364-365
1975 ASLVZZ01 094,194-195,293-365 213-214
1980 ASLVZZ01 001-247 None
1981 ASLVZZ01 063-147 None
1982 ASLVZZ01 232-233 None
1983 ASLVZZ01 061,146-201 None
1984 ASLVZZ01 None None
1985 ASLVZZ01 111-114 None
1986

ASLVZZ01

ASLVBG02

064-066,261-263,294-297

None

None

None

1987 ASLVBG02 004,289-321 289
1988 ASLVBG02 None None
1989 ASLVBG02 None None
1990 ASLVBG02 None None
1991 ASLVBG02 None None
1992 ASLVBG02 None None
1993 ASLVBG02 None None
1994 ASLVBG02 328-329, 340-342 None
1995 ASLVBG02 None None
1996 ASLVBG02 117-123, 137 075, 077, 079
1997 ASLVBG02 323-328 None
1998 ASLVBG02 None None
1999 ASLVBG02 264-269 None
2000 ASLVBG02 230-236, 249-256, 263-269, 340 064-066
2001 ASLVBG02 158, 212-221, 263-264 082-083, 296-365
2002 ASLVBG02 043-048, 128-165, 190-201, 232-235, 240-245, 322 001-043
2003 ASLVBG02 245 None
2004 ASLVBG02 None None
2005 ASLVBG02 None None
2006 ASLVBG02 040,061,070-072,075,080 None
2007 ASLVBG02 199-205,282-297 183-199,299-365
2008 ASLVBG02 121-122,268-275,341 001-121,267,275-283
2009 ASLVBG02 106 032-218,254-259,283-285,287-301,309-318,322-326,328-365
2010 ASLVBG02 153 001-183,187-196,200-365
2011 ASLVBG02 None 001-365
2012 ASLVBG02 026,031 001-026,026-031,031-366
2013 ASLVBG02 None 001-365
2014 ASLVBG02 None 001-365
2015 ASLVBG02 None 001-159,189-193,195-212,217-365
2016 ASLVBG02 None 001-366
2017 ASLVBG02 None 001-297,333-365
2018 ASLVBG02 None 001-018,030,047-052,073-075,079-159,166-176,189-206,208-365
2019 ASLVBG02 None 001-365
2020 ASLVBG02 None 001-018,027-028,031
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