Majuro (Marshall Islands) Site History
Site
| Station | Majuro |
|---|---|
| Country | Republic of Marshall Islands |
| Latitude | 07° 17.0'N (1968-1972) 07° 06.4' N (1973-1998) |
| Longitude | 171° 08.3' E (1968-1972) 171° 22.4' E (1973-1998) |
| GLOSS No | 112 |
| Time Reference | GMT (hours 00-23) |
| Contributor (1968-1972) | Scripps Institute of Oceanography |
| Contributor (1973-1998) | UH Sea Level Center |
| Contributor (1999-) | The National Tidal Facility (NTF) Flinders University of South Australia GPO Box 2100 Adelaide, 5001, South Australia. |
| Instrument Type | 1968-72 unconfirmed 1. (Apr 1974-present) Leupold and Stevens Analog-to-Digital Recorder (ADR) 2. (Aug 1983-present) Handar Encoder (ENC) NTF: Aquatrak acoustic gauge (SEAFRAME) |
| Primary gauge | ADR: 1974-90 ENC: 1991- |
| Site of Gauge | |
| Observational periods | 1968 - 2001 |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed benchmarks. The 1968-72 data have not been linked to the remaining series with either geodetic leveling or data overlap. However the long term difference with Kwajalein suggests these two segments at Majuro are on the same level. Use discretion.
Tide Gauge Benchmark (TGBM) Description
| Benchmark | Description |
|---|---|
| BM1 | The SS bolt has no stamp and is embedded in concrete on the roadway to the dock, next to the curb. It is about 2 ft south of tide station foundation. |
| BM2 | The SS bolt is embedded in the corner of a concrete slab by the electrical vault, which is on the north west side of the freezer of fishery pier. |
| BM4 | The SS bolt has no stamp and is embedded into the concrete curb of the copra dock road way. It is situated at the top of the incline just past the power station pump house. |
| BM3 | This has been replaced by BM3A, and can be found on the rise near the guard rail in the south western corner of freezer plant, five feet from BM3. |
Quality Assessment by the UH Sea Level Center
Comment
The daily and monthly means reveal no apparent changes in the reference level and agree with Ponape.
Timing accuracy was no better than plus or minus 7 minutes prior to 1983.
| Year | CI(%) | Missing Data | Replaced or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1969 | 100 | none | (23)209-(11)210 (00)211-(10)211 | none |
| 1970 | 100 | none | none | none |
| 1971 | 100 | none | none | none |
| 1972 | 99 | 366 | (03)356-(02)357 | none |
| 1973 | 0 | 1-365 | none | none |
| 1974 | 37 | 251-365 | none | none |
| 1975 | 72 | 1-81,105-120,126-129,258-259 | none | 84-85,88-89,98-99,102,145-146,175,188-192 |
| 1976 | 97 | 255-257,266-270, | none | 1-4,16-17,47-49,161- |
| 1977 | 100 | none | none | 18-23,32-40,79-85,89-90,121-126,136-142,147-151,179-181, |
| 1978 | 97 | 60-69 | none | 8-12,21-24,35-40,52-302-305,315-323,329- |
| 1979 | 86 | 75-117,262-269 | none | 1-3,9-11,56-63,142-145,172-178,229,365 |
| 1980 | 82 | 91-155 | none | 1-3,27-35,43-51,59- 68,73-80 |
| 1981 | 100 | none | none | 64-70,75-84,179-183, |
| 1982 | 99 | 166-167 | none | 7-11,25,37-41,66-71,317-319 |
| 1983 | 100 | none | none | 1-5,25-34,43-49,55-61,84-89 |
| 1984 | 100 | none | none | none |
| 1985 | 100 | none | none | none |
| 1986 | 100 | none | none | none |
| 1987 | 100 | none | none | none |
| 1988 | 92 | 6-11,339-365 | none | 48-50,61-65,77-80,268-269,300-302 |
| 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 | 100 | none | none | none |
| 1995 | 100 | none | none | none |
| 1996 | 100 | none | none | none |
| 1997 | 100 | none | none | none |
| 1998 | 100 | none | none | none |
| 1999 | 90 | 213-240,257-264,335-337 | none | none |
| 2000 | 94 | 7-13,16-32 | none | none |
| 2001 | 99 | 289-290 | none | none |
