QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 30 Oct 2000 Station : Norfolk Island-B Latitude: 29 04.0S Country : Australia Longitude: 167 56.0E JASL # : 062B Time Meridian: 173E (GMT + 11.5) GLOSS # : 124 TOGA #: P030 NODC #: 32169701 Contributor : The National Tidal Facility Flinders University of South Australia GPO Box 2100 Adelaide, 5001, South Australia AUSTRALIA Originator : same Original Data: digital Instrmnt Type: Leupold Stevens analog-to-digital recorder Digitzd Intvl: 15 minutes Present Data : Hourly, daily, and monthly values obtained by: Hourly : simple Gaussian filter 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 Feb 1994 - 31 Dec 1999 Gaps > 1 mon : none Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1994-1999 Refernce Levl: All heights have been referred to the station tide gauge zero which is linked to fixed benchmarks. The primary Tide Gauge Benchmark is "BM 1", the top of a concrete block protruding about 0.3m above ground level and marked ZNI. The tide gauge zero = 5.432 m below BM 1. Comment : This series is distinguished from Norfolk Island-A due to the long time gap. At some point these series may be linked together. The timing is fair to good throughout. SPECIAL NOTE FROM THE DATA CONTRIBUTORS: Supply of sea level data subject to the following conditions: i) When any data supplied by the National Tidal Facility is used in any publication or report, the origin of such data shall be acknowledged in that publication or report in the following approved form:-- "Tidal {predictions) for {port} {are} supplied {constants} {station} {is} {material} {...} by the National Tidal Facility, The Flinders University of South Australia, Copyright reserved." ii) All material is supplied in good faith and is believed to be correct. It is supplied on the condition that no warranty is given in relation thereto, that no responsibility or liability for errors or omissions is, or will be, accepted and that the recipient will hold the Flinders Univer- sity of South Australia and the National Tidal Facility free from all such responsibility or liability and from all loss or damage incurred as a consequence of any error or omission. iii) The acceptance of material and computations from the National Tidal Facility of the Flinders University of South Australia will be deemed to include acceptance of the conditions of supply. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1994 92 none none none 1995 100 none none none 1996 100 none none none 1997 99 294-295,365 none none 1998 99 1 none none 1999 100 none none none