Townsville (Australia) Site History

History Summary

Station Townsville
Country Australia
Gloss No. 060
Latitude 010° 15.0' S
Longitude 146° 50.0' E
Time Meridian 150E (GMT +10 hr)
Time Reference GMT (hours 00 - 23)
Contributor National Tidal Facility (NTF), Flinders University of South Australia,
GPO Box 2100,
Adelaide,
S.A. 5001,
Australia.
Instrument Type Standard float /well gauge
Observational periods 1985 - present

Benchmarks

Benchmark Description
NMV/B/309A
(TGBM)
Brass rod in concrete footing of elevated loading conveyor on concrete wharf No. 6 (PSM 19533)
BM 10011
(Auxiliary)
NE corner of State Offices, Wickham Street, Townsville.
NMV/B/310A
(Auxiliary)
Brass rod in concrete near edge of Wharf No.6 (PSM19534)
TPA Master BM
(Auxiliary)
Brass rod in concrete under steel plate, Wharf No.4 (PSM 47788).
PSM 100028
(Auxiliary)
Permanent survey plaque in concrete at base, Wharf No. 4

Benchmark Relationships

Tide Gauge Zero (TGZ) = 6.099m below NMV/B/309A
TGZ = 8.745m below BM10011
TGZ = 1.576m below Australian Height Datum (AHD)

Quality Assessment

Comment

The data reveal no apparent changes in reference level.

Most questionable fluctuations are related to timing errors of the gauge. Only extreme fluctuations are listed below.

Year CI(%) Missing Data Replaced Gaps or Bad Data Questionable Fluctuations
1985 100 none 218(08)-218(11) 219(09)-219(14) none
1986 98 38(02)-40(22) 186(00)-187(22) 090(11)-090(13) 230(13)-230(14) 231(13)-231(16) 232(13) 174
1987 99 150(04)-151(23) 249(22)-250(00) none
1988 98 304(23)-311(22) 344(23)-345(00) none
1989 100 none 076(13)-076(14) 085(21)-085(22) none
1990 100 none none none
1991 99 048(09)-051(01) 207(14)-208(05) 009(21),010(19) 010(20),302(00) none
1992 98 093(23)-096(22) 295(19)-299(22) 268(12)-268(13) none
1993 100 none none none
1994 100 none 009(22),060(13) none
1995 100 none 167(06)-167(08) none
1996 100 none 007(18) none
1997 100 none 082(15)-082(17) none
1998 100 none 124(16) none