Malakal (Belau) Site History
History Summary
| Station name | Malakal |
|---|---|
| Country | Republic of Belau |
| Latitude | 07° 19.8' N |
| Longitude | 134° 27.8' E |
| GLOSS No. | 120 |
| Time Reference | GMT (hours 00-23) |
| Contributor | UH Sea Level Center (1971-) Scripps Institute of Oceanography (1969-70) |
| Instrument Type | Unconfirmed (1969-70) Bristol bubbler (1971-7/1974) Fischer and Porter Analog-to-Digital Recorder (ADR) (8/1974-) Handar Encoder (ENC), (1990-) (*used as primary gauge beginning May 1991) |
| Site of Gauge | |
| Observational Period | 1969 - present |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed benchmarks.
Tide Gauge Benchmark (TGBM) Description
BM Control
USGS1 standard brass disc, stamped 'No 1 1969', set in concrete slab at entrance to tide house, a south end of Fisheries Development Wharf (established 13 May 1969)
Auxiliary Benchmarks
USGS2: standard brass disc, stamped 'No 2 1969', set in concrete step platform at E entrance to Fish. Dev. Reefer Plant, about 2.5ft above ground level (USGS2 & 3 established 13 May 1969).
USGS3: standard brass disc stamped 'No 3 1969', set in concrete 2ftx3ft and projecting 1.5ft above ground level located at NE end of 11ft x70ft concrete cooling tank just N of Fish. Dev. Plant.
Other Benchmarks
USGS4: standard brass disc, stamped 'NO 4 1969' set in concrete at S end of sliding door entrance to Malakal Supply Warehouse.
USGS5: standard brass disc, stamped 'NO 5 1969' set in concrete foundation supporting marine railway at Palau shipyard.
AGS3 : standard US Navy Hydrographic brass disc stamped'BM #3 USS TANNER' located on top of sea wall 41ft W of tide house, (established November 1984).
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 Yap.Spike on 17 February 1996 associated with tsunami.
| Year | CI (%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1970 | 85 | 239-292,365 | none | none |
| 1971 | 92 | 1-31 | none | 124-125 |
| 1972 | 73 | 244-250,275-366 | none | 134-136,258-259 |
| 1973 | 85 | 1-56 | none | 75-77,94,121-123, 182-183,238,312-316 |
| 1974 | 83 | 32-38,164-169,186-239 | (11)008-(03)009,(16)058-(05)059, (21)183-(12)184 | 13,63-65,83 |
| 1975 | 76 | 9-87,150-151,189-190,261-263 | none | 252-254 |
| 1976 | 100 | none | none | none |
| 1977 | 98 | 189-195 | none | 226-228 |
| 1978 | 92 | 121-123,267-283,318-325 | none | 317-318 |
| 1979 | 99 | 202-204 | none | 29-30 |
| 1980 | 97 | 54-55,155-165 | none | none |
| 1981 | 99 | 284-287 | none | none |
| 1982 | 100 | none | none | none |
| 1983 | 100 | none | none | none |
| 1984 | 100 | none | none | none |
| 1985 | 99 | 187-189 | none | none |
| 1986 | 100 | none | none | none |
| 1987 | 92 | 245-275 | none | 355 |
| 1988 | 100 | none | none | 20-22,48-51,294-297 |
| 1989 | 100 | none | none | 134-135,161-164,215- |
| 1990 | 100 | none | none | none |
| 1991 | 98 | 123-126,215-219,230-233 | none | none |
| 1992 | 100 | none | none | none |
| 1993 | 100 | none | none | none |
| 1994 | 97 | 128-136,145-147 | (21)118-(12)119,(06)144-(02)145 | none |
| 1995 | 100 | none | none | none |
| 1996 | 100 | none | none | none |
| 1997 | 100 | none | none | none |
| 1998 | 100 | none | none | none |
