Duck (North Carolina, USA) Site History
History Summary
| Station Name | Duck, N.C. |
|---|---|
| Latitude | 36° 11.0' N |
| Longitude | 075° 44.4' W |
| Country | U.S.A. |
| GLOSS No. | 219 |
| Time Reference | GMT (00-23 hours) |
| Contributor | (1979-2000) NOAA/NOS, USA |
| Instrument Type | (1979-1995) Analog-to-Digital Recorder (ADR) (1995-2000) NOAA Next Generation Water Level Measuring System (NGWLMS) |
| Site of Gauge | |
| Observational Period | 1979 - 2000 |
| Reference Level | All data are referred to Tide Gauge Zero and are linked into historic fixed benchmarks. |
Tide Gauge Benchmark (TGBM) Description
BM control - NOS tide gauge benchmark survey disk stamped '865 1370 B 1977' set atop a galvanised steel deep rod located in the US Army Corps of Engineers Facility Compound, Duck, NC.
Auxiliary Benchmarks
| 865 | 1370 | A | 1977 |
| 865 | 1370 | C | 1977 |
| 865 | 1370 | D | 1977 |
| 1370 | E | 1979 | |
| 1370 | F | 1979 | |
| 1370 | G | 1980 | |
| 1370 | H | 1980 | |
| 1370 | J | 1980 | |
| 1370 | K | 1980 | |
| #64 |
Benchmark Relationships
TGBM = 14.80 feet above mean lower low water (1960-1978 epoch)
TGBM = 12.99 feet above mean sea level (1960-1978 epoch)
TGBM = 11.37 feet above mean high water (1960-1978 epoch)
Quality Assessment
Comments
The hourly residuals show significant fluctuations, with a duration of a day or longer, and are very noisy.
The data for 1996-2000 were supplied with heights relative to MLLW. Consequently 5550mm was added to refer the data to tide gauge zero.
The data for 1998-2000 were supplied in non-GMT format and had to be shifted into GMT.
| Year | Completeness Index (%) | Questionable Fluctuations (in day Nos.) and Missing Data (Gaps > 6 hours) |
|---|---|---|
| 1979 | 100 | None |
| 1980 | 100 | None |
| 1982 | 100 | None |
| 1983 | 100 | 263-270 |
| 1984 | 100 | None |
| 1985 | 100 | 270 |
| 1986 | 91 | None Gap from 1986/01/27 at 17.00 to 1986/02/04 at 16.00 |
| 1987 | 100 | 328-331,336-338 |
| 1988 | 99 | None |
| 1989 | 99 | None Gap from 1989/10/05 at 16.00 to 1989/10/09 at 10.00 |
| 1990 | 100 | None |
| 1991 | 100 | None |
| 1992 | 100 | 154-156 |
| 1993 | 100 | None |
| 1994 | 100 | 26 |
| 1995 | 100 | 68 |
| 1996 | 100 | None |
| 1997 | 100 | None |
| 1998 | 100 | 108,117,125,128-129,155-178,343-356 |
| 1999 | 100 | 24,44,66,100,114,258-259,265,277 |
| 2000 | 97 | 14,116,258,266 Gap from 2000/09/14 at 06.00 to 2000/09/21 at 16.00 Gap from 2000/09/22 at 06.00 to 2000/09/25 at 20.00 |
