Duck (North Carolina, USA) Site History
|Station Name||Duck, N.C.|
|Latitude||36° 11.0' N|
|Longitude||075° 44.4' W|
|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.
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)
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.
|Questionable Fluctuations (in day Nos.)
and Missing Data (Gaps > 6 hours)
Gap from 1986/01/27 at 17.00 to 1986/02/04 at 16.00
|1989||99||None Gap from 1989/10/05 at 16.00 to 1989/10/09 at 10.00|
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