Diego Garcia-D (UK) Site History

History Summary

Station Diego Garcia-D
Country United Kingdom
Latitude 07° 17.4' S
Longitude 072° 23.6' E
GLOSS No 026
Time Reference GMT (hours 00-23)
Contributor 1992-present NOAA/NOS
Instrument Type (1992-present) Next Generation Water Level Measurement System - acoustic sensor
Site of Gauge The gauge is situated next to the deep draft wharf.
Observational Period 1992-present

Reference Level

For the NGWLMS, all heights are referred to a datum zero which is linked to fixed benchmarks.

Benchmarks

Benchmark Description
BM-D
(TGBM)
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
(Auxiliary)
established 1990
BM-B
(Auxiliary)
established 1990
BM-C
(Auxiliary)
established 1990
BM-H
(Auxiliary)
established 1991
BM-J
(Auxiliary)
established 1991

Quality Assessment

Comments

Data from Diego Garcia-C are maintained in a separate record 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
1992 81 81 none none none
1993 100 100 none none none
1994 79 79 033-108 none none
1995 88 88 023-030,131-140,254-260,274-292 none none
1996 21 21 001-015,028-098,138-141,162-366 none none
1997 87 87 1,11-18,180-182,225-231,299-307,320-335,349-363 none none
1998 29 29 019-025,039-060,075-083,102-115,130-173,195-365 none none