Diego Garcia-C (UK) Site History

History Summary

Station Diego Garcia-C
Latitude 07 17.4S
Country United Kingdom
Longitude 072 23.6E
GLOSS No 026
Time Reference GMT (hours 00-23)
Contributor 1988-1991 TOGA Sea Level Center
Instrument Type Fischer and Porter Analog-to-Digital Recorder
Site of Gauge The gauge is situated next to the deep draft wharf.
Observational periods 1988-1991

Reference Level

All heights for the Float and stilling well gauge have been referred to the station tide staff zero which is linked to fixed benchmarks.

Tide gauge benchmark (TGBM) description

Benchmark Description
BM-D This is a NOS bench mark stamped "1000 D 1990", set in a concrete pad supporting ten electrical switch panels.It is 180 feet southwest of the wharf face (established 1990).
BM-A established 1990
BM-B established 1990
BM-C established 1990
BM-H established 1991
BM-J established 1991

Quality Assessment by the UH Sea Level Center

Comment: The daily and monthly means do not reveal any reference level shifts or trends upto the end of 1991. Data from Diego Garcia-B and Diego Garcia-D are maintained in separate records because these series are not linked to the same tide staff zero. Timing errors are evident in the hourly data.

Year CI(%) QI(%) Missing Data Replaced Gaps or Bad Data Questionable Fluctuations
1988 78 78 140-143,226-230,275-288 none See comment above
1989 100 99 none none " " "
1990 91 88 121-172,201-229,263-270,281-286 none " " "
1991 82 82 62-69,70-72,154-155,192-197,220-221,246-247,286-329,353-357 (03)161-(00)162 none