Ponta Delgada (Azores) Site History
History Summary
| Station Name | Ponta Delgada, Azores |
|---|---|
| Latitude | 37° 44.1' N |
| Longitude | 025° 40.3' W |
| Country | Portugal |
| GLOSS No. | 245 |
| Time Reference | GMT (00-23 hours) |
| Contributor | 1978-1991 Portuguese Hydrographic Institute 1993-present NOAA/NOS |
| Instrument Type | (1978-1991) Analog to digital recorder (1993-present) Next Generation Water Level Measurement System, acoustic sensor |
| Site of Gauge | |
| Observational Periods | 1978-1980, 1982-present |
| Reference Level | All data are referred to TGZ and linked into historic fixed benchmarks. |
Tide Gauge Benchmark (TGBM) Description
BM Control - NP - benchmark bolt at the root of pier
Auxiliary Benchmarks
MN 7/83 is 2.748m above Chart Datum
MC is 2.812m above Chart Datum
Benchmark Relationships
Tide gauge zero (TGZ) = Portuguese Hydrographic Institute Chart Datum
TGZ = 3.000m below NP
Quality Assessment
Comments
The daily or monthly means do not reveal any obvious reference level shifts.
Most questionable fluctuations are related to timing problems with the gauge. Time shift of -1hr applied to 02/02/94(01) - 02/04/94(00)
| Year | Completeness Index (%) | Questionable Fluctuations(in day Nos.) and Missing Data (Gaps >6 hours) |
|---|---|---|
| 1978 | 100 | 199-200 |
| 1979 | 91 | 2,218,277-280,294,353-354 Gap from 1979/02/20 at 23.00 to 1979/02/26 at 22.00 Gap from 1979/04/22 at 23.00 to 1979/04/26 at 22.00 Gap from 1979/07/22 at 23.00 to 1979/07/31 at 22.00 Gap from 1979/08/15 at 23.00 to 1979/08/20 at 22.00 Gap from 1979/08/31 at 23.00 to 1979/09/03 at 22.00 Gap from 1979/12/08 at 23.00 to 1979/12/15 at 22.00 |
| 1980 | 92 | 18,222-226,237-243 Gap from 1980/01/01 at 23.00 to 1980/01/07 at 22.00 Gap from 1980/01/18 at 23.00 to 1980/01/21 at 22.00 Gap from 1980/02/08 at 23.00 to 1980/02/11 at 22.00 Gap from 1980/02/19 at 23.00 to 1980/02/25 at 22.00 Gap from 1980/02/28 at 23.00 to 1980/03/06 at 22.00 Gap from 1980/07/19 at 23.00 to 1980/07/24 at 22.00 |
| 1982 | 99 | 213,221-222 Gap from 1982/08/23 at 23.00 to 1982/08/25 at 22.00 |
| 1983 | 96 | 121 Gap from 1983/04/10 at 23.00 to 1983/04/16 at 22.00 Gap from 1983/09/20 at 23.00 to 1983/10/01 at 22.00 |
| 1984 | 51 | 225-229 Gap from 1984/01/11 at 23.00 to 1984/04/03 at 22.00 Gap from 1984/04/24 at 23.00 to 1984/07/12 at 22.00 Gap from 1984/07/30 at 23.00 to 1984/08/07 at 22.00 Gap from 1984/09/21 at 23.00 to 1984/10/01 at 22.00 |
| 1985 | 78 | None Gap from 1985/01/17 at 23.00 to 1985/01/25 at 22.00 Gap from 1985/02/07 at 23.00 to 1985/03/11 at 22.00 Gap from 1985/04/15 at 23.00 to 1985/04/24 at 22.00 Gap from 1985/09/06 at 23.00 to 1985/09/16 at 22.00 Gap from 1985/11/19 at 23.00 to 1985/12/02 at 22.00 Gap from 1985/12/11 at 23.00 to 1985/12/20 at 22.00 |
| 1986 | 73 | None Gap from 1986/01/29 at 23.00 to 1986/02/12 at 22.00 Gap from 1986/03/26 at 23.00 to 1986/03/31 at 22.00 Gap from 1986/04/15 at 23.00 to 1986/04/27 at 22.00 Gap from 1986/05/11 at 23.00 to 1986/06/27 at 22.00 Gap from 1986/07/11 at 23.00 to 1986/07/15 at 22.00 Gap from 1986/08/03 at 23.00 to 1986/08/11 at 22.00 Gap from 1986/11/12 at 23.00 to 1986/11/20 at 22.00 |
| 1987 | 98 | None Gap from 1987/01/23 at 23.00 to 1987/01/27 at 22.00 Gap from 1987/02/16 at 23.00 to 1987/02/19 at 22.00 |
| 1988 | 99 | None Gap from 1988/11/25 at 23.00 to 1988/11/29 at 22.00 |
| 1989 | 98 | None Gap from 1989/01/27 at 23.00 to 1989/01/31 at 22.00 Gap from 1989/02/23 at 23.00 to 1989/02/27 at 22.00 |
| 1990 | 87 | None Gap from 1990/02/21 at 01.00 to 1990/02/25 at 00.00 Gap from 1990/04/12 at 01.00 to 1990/04/17 at 00.00 Gap from 1990/04/23 at 01.00 to 1990/05/12 at 00.00 Gap from 1990/06/09 at 01.00 to 1990/06/14 at 00.00 Gap from 1990/07/04 at 01.00 to 1990/07/11 at 00.00 Gap from 1990/08/16 at 01.00 to 1990/08/19 at 00.00 |
| 1991 | 45 | None Gap from 1991/01/08 at 01.00 to 1991/01/18 at 00.00 Gap from 1991/02/27 at 01.00 to 1991/03/07 at 00.00 |
| 1993 | 44 | None |
| 1994 | 100 | None |
| 1995 | 100 | None |
| 1998 | 98 | None Gap from 1998/01/01 at 00.00 to 1998/01/07 at 00.00 Gap from 1998/10/27 at 05.00 to 1998/10/27 at 19.00 (05)300-(19)300 |
