Yakutat (Alaska) Site History
History Summary
| Station | Yatutat, Alaska |
|---|---|
| Country | U.S.A. |
| Latitude | 059° 32.9' N |
| Longitude | 139° 44.1' W |
| WOCE No | 9055 |
| Time Meridian | 135W (GMT -9 hr) |
| Time Reference | GMT (0-23) |
| Contributor | National Ocean Service (NOS) National Ocean. and Atmos. Administration (NOAA) N/OES22 SSMCA, STATION 7109 1305 East West Highway Silver Spring, MD. 20910-3233 |
| Originator | Same |
| Instrument Type | Float/well system (1961-1992) Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System NGWLMS (1993 - 2000) |
| Observational Period | 01 January 1961 - 2000 |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed bench marks. While standard mechanical or ADR instrument was the primary gauge, leveling calibration factors were applied monthly based on tide staff comparisons.
Tide Gauge Benchmark (TGBM) Description
Unavailable at present.
Quality Assessment
Comments
There is no evidence of any obvious reference level shifts.
Most questionable fluctuations are related to timing problems with the gauge, there are numerous occasions in the data from 1961 to 1977, only extreme fluctuations are noted. The timing improves greatly from 1978.
1993-1994 Timing shifted by + 9 hours.
The data for 1993-2000 were supplied with heights relative to MLLW. Consequently 656mm 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.
Notable episodic events:
- 28 March 1964: Tsunami from Alaska
Gaps in the Data Record
The following gaps occur in the data set.
| Year | CI (%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1961 | 99 | 001 | None | 167 |
| 1962 | 100 | None | None | 6-7 |
| 1963 | 100 | None | None | 272 |
| 1964 | 33 | 122-366 | None | 20 |
| 1965 | 32 | 1-247 | None | 280-280,298-300,324-328,341-346 |
| 1966 | 100 | None | None | 57,79-80 |
| 1967 | 84 | 122-182 | None | 308-335 |
| 1968 | 95 | 296-313 | None | 190-191,342-348,354-362 |
| 1969 | 99 | 83-88 | None | 59-65 |
| 1970 | 100 | None | None | 10,12-13,124-125,143-144,160,231-264 |
| 1971 | 83 | 32-91,169-173 | (13)167-(02)168,(09)168-(03)169 | 158-166 |
| 1972 | 76 | 190-192,195-207,244-250,274-283, 309-366 | None | 241-244,250-274,294-309 |
| 1973 | 35 | 1-236,267-269,270-272 | (00)313-(08)313 | 290 |
| 1974 | 98 | 106-107,109-116 | 44,(23)108-(20)109,305,307,318 | 116-202 |
| 1975 | 100 | None | None | 83,171-175,293-295 |
| 1976 | 97 | 113-122 | None | 93,98-99,324-331,358 |
| 1977 | 70 | 177-178,182-192,225-226,244-257,275-278,288-365 | (04)181-(18)181,(12)235-(10)236,(15)236-(10)237,(18)238-(12)239,(19)240-(13)241,(07)242-(14)242,(20)243-(23)243,(06)270-(15)270 | 123-125,174-177,269-270 |
| 1978 | 88 | 1-13,15-18,335-365 | None | 45 |
| 1979 | 51 | 1-178 | None | None |
| 1980 | 84 | 32-92 | None | None |
| 1981 | 100 | None | None | None |
| 1982 | 100 | None | None | 68,74,94-95,100-102 |
| 1983 | 100 | None | None | None |
| 1984 | 100 | None | None | None |
| 1985 | 100 | None | None | 122-129 |
| 1986 | 100 | None | None | None |
| 1987 | 100 | None | None | None |
| 1988 | 100 | None | None | 299-302 |
| 1989 | 100 | None | None | None |
| 1990 | 100 | None | None | None |
| 1991 | 100 | None | (11)162-(01)163 | 247-256 |
| 1992 | 100 | None | None | None |
| 1993 | 100 | None | None | None |
| 1994 | 100 | None | None | None |
| 1995 | 100 | None | None | 201 |
| 1996 | 100 | None | (00)040-(08)040 | None |
| 1997 | 100 | None | None | None |
| 1998 | 100 | None | None | 162-165,189-193,352-357 |
| 1999 | 100 | None | None | 1-21,324-328,334-346,353-365 |
| 2000 | 100 | None | None | 344-348 |
