French Frigate Shoals (USA) Site History

History Summary

Station name French Frigate Shoals
Country USA
Latitude 23° 52.0' N
Longitude 166° 17.4' W
GLOSS No. 107
Time Reference GMT (hours 00-23)
Contributor UH Sea Level Center
Instrument type Fischer and Porter Analog-to-Digital Recorder; Handar Encoder
(installed and became primary gauge 11 Oct 1996)
Site of Gauge  
Observational Period 1974 - present

Reference Level

All heights have been referred to the station tide staff zero which is linked to fixed bench marks.

Tide Gauge Benchmark (TGBM) Description

BM Control

Auxilliary Benchmarks

UH2 SS bolt head, set in concrete, at entrance of tide house.

UH3 SS bolt set in concrete, stamped 'KAMBIC/JONES' on sea wall 2ft west of tide well.

UH4 SS bolt head set in concrete, stamped '4', located at the north west corner of the Weather Service tower.

UH5 SS bolt head set in concrete, NW corner steps of Main building

Quality Assessment by the UH Sea Level Center

Comment

The data from July 1974 to 16 August 1975 are from a standard float/well gauge (analog).

The daily and monthly means reveal no obvious shifts or trends.

Year CI (%) Missing Data Replaced Gaps or Bad Data Questionable Fluctuations
1974 50 none none none
1975 98 227-228,254-259 none none
1976 95 34-36,59-61,115-116,199-200, 316-322 none none
1977 90 220-224,306-335 none none
1978 99 322-324 none none
1979 98 21-23,299-300,332-333 none none
1980 98 56-61,160-162 none none
1981 99 167-169,259-260 none none
1982 100 none none none
1983 93 78-88,335-345,356-358 none none
1984 99 110-112 none none
1985 100 none none none
1986 71 70-79,128-213,317-321,352-356 none none
1987 83 32-90,204-206 none none
1988 100 none none none
1989 100 none none none
1990 100 none none none
1991 100 none none none
1992 100 none none none
1993 100 none none none
1994 99 305-306 none none
1995 100 none none none
1996 100 none none none
1997 100 none none none
1998 100 none 028,361,365 none