QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 30 Oct 2019 Station : Spring Bay Latitude: 42 32.8S Country : Australia Longitude: 147 55.9E JASL # : 335A Time Meridian: 150E (GMT + 10 hr) GLOSS # : 056 Originator #: ID071007 NODC #: 34142701 Contributor : National Tidal Centre, Bureau of Meteorology PO Box 421 Kent Town SA 5071 South Australia AUSTRALIA Originator : same; Australian Baseline Sea Level Monitoring Project Original Data: analog, SL,TAC: digital Instrmnt Type: (1982-1991) float/well analog trace (1991-09/Nov/2009) Aquatrak acoustic gauge, Sutron Logger (SL) 09/Nov/2009- acoustic gauge Telmet T320 Aquatrak Controller (TAC); Digitzd Intvl: spot hourly; TAC: Weighted average of 4, 1-minute readings; 1-minute reading is average of 60, 1-sec samples SL: used 6-minute samples average of 181, 1-second samples. Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot hourly for analog; filter with a cut-off of 2 hours Daily : 119-point convolution filter (Bloomfield, 1976) centered on noon applied to the hourly data with respective periods of the 95, 50, and 5% amplitude points at 124.0, 60.2, and 40.2 hours Monthly: Simple average of all daily values; calculated if 7 or fewer days are missing Span of data : 12 Mar 1985 - 31 Dec 2018 Gaps > 1 mon : 24 Jun - 21 Sep 1989;23 Jul - 28 Sep 1990 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1985-2018 Refernce Levl: The sea level heights are referred to Tide Gauge Zero (TGZ), which is linked to fixed bench marks. At some locations, TGZ is not the same as Chart Datum. Please contact the originators for specifics. The primary Tide Gauge Benchmark is set in the top of a sandstone cliff just N of the gravel road leading to the mill wharf and is designated "SPM 8521". Australian Height Datum is 1.153m above TGZ. Seaframe Sensor Bench Mark is 4.653m above TGZ. Comment : The data are of high quality. Spring Bay is located in Triabunna, Tasmania, and is part of the Australian Baseline Sea Level Monitoring Project. Exact coordinates: 42 deg 32 min 45.1 sec S 147 deg 55 min 57.8 sec E SPECIAL NOTE TO USERS OF NAT. TIDAL CENTRE DATA: As a user of this information, you are deemed to have read and accepted the conditions described in the Copyright Notice and Disclaimer at: http://www.bom.gov.au/other/copyright.shtml CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1985 70 249-256 (02)159-(13)159 none (14)289-(05)290 1986 93 55-57,122-128,162- (18)217-(13)218 none 165,233-243,308-310, (13)255-(05)256 339-342,365 (10)281-(21)281 (04)333-(00)334 (05)363-(20)363 1987 83 1-3,76-93,158-184, none none 286-288,323-338 1988 100 none none none 1989 67 93-122,175-264, none none 314-317 1990 82 204-271 none none 1991 94 8-14,69-85 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 96 295-308 (05)133-(01)134 none 1998 100 none none none 1999 99 72-75,179-180 none none 2000 100 none none none 2001 100 none none none 2002 100 none none none 2003 100 none none none 2004 100 none none none 2005 100 none none none 2006 100 none none none 2007 100 none none none 2008 98 270-276 none none 2009 100 none none none 2010 100 none none none 2011 100 none none none 2012 100 none none none 2013 99 302-304 (23)301-(06)302 none 2014 95 304-324 none none 2015 99 216-218 none none 2016 100 none none none 2017 100 none none none 2018 100 none none none