QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 24 Oct 2019 Station : Esperance Latitude: 33 52.2S Country : Australia Longitude: 121 53.8E JASL # : 176A Time Meridian: 120E (GMT + 8 hr) GLOSS # : 054 Originator #: 62080 NODC #: 33123101 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: Digital Instrmnt Type: Aquatrak acoustic gauge Telmet T320 Aquatrak Controller; Prior 7-Sep-2009: SUTRON data logger Digitzd Intvl: 6 minute Weighted average of 4, 1-minute readings; 1-minute reading is average of 60, 1-sec samples. Prior to 7-Sep-2009 Sutron Logger used 6-minute samples average of 181, 1-second samples. Present Data : Hourly, daily, and monthly values obtained by: Hourly : Cosine-Lanczos filter with cutoff of 120 min. 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 : 01 Jan 1985 - 31 Dec 2018 Gaps > 1 mon : 20 Mar 2000 - 03 Aug 2000 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 a PWD brass plaque stamped 'TIDAL BM 1972', set in concrete deck at the NW end of No. 1 Berth. Australian Height Datum is 0.707m above TGZ. Seaframe Sensor Bench Mark is 4.782m above TGZ. Since 1/1/2006, TGZ is LAT which is 3.816m below tidal benchmark BM 2000. Comment : The data are of high quality. 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 100 none (01)128-(23)128 none (02)301-(23)301 1986 98 178-181,318-321 none none 1987 100 none none none 1988 99 80-82 (00)068-(23)068 none 1989 100 none none none 1990 99 159-162 none none 1991 99 211-214 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 99 281-282 none none 1998 92 47-51,251-274, (00)073-(23)073 none 313-315 1999 100 none none none 2000 63 80-216 none none 2001 99 225-226 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 100 none none none 2009 100 none none none 2010 100 none none none 2011 100 none none none 2012 100 none none none 2013 100 none none none 2014 94 274-295 none none 2015 100 none none none 2016 99 23-25,51-53 none none 2017 100 none none none 2018 100 none none none