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 : Lombrum, Manus Is. Latitude: 02 02.2S Country : Papua New Guinea Longitude: 147 22.5E JASL # : 400A Time Meridian: 150E (GMT + 10 hr) GLOSS # : 331 Originator #: ID070008 NODC #: 30142701 Contributor : National Tidal Centre, Bureau of Meteorology PO Box 421 Kent Town SA 5071 South Australia AUSTRALIA Originator : same Original Data: digital Instrmnt Type: Aquatrak acoustic gauge (SEAFRAME) Digitzd Intvl: 6 minute (average of 181 one minute 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 : 29 Sep 1994 - 31 Dec 2018 Gaps > 1 mon : 01 May 1995 - 06 Mar 1996;12 Sep 2011 - 19 Oct 2011 11 Jul 2012 - 11 Aug 2012;18 Aug 2014 - 09 Dec 2014 22 Dec 2016 - 21 Mar 2017 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1994-2018 Refernce Levl: All heights have been referred to the station Tide Gauge Zero (TGZ), which is linked to fixed bench marks. The height datum is Mean Sea Level derived from PSM 4795 in the 1994 survey are available. Height of Seaframe Sensor Bench Mark (SSBM) above TGZ is 4.5813m. Comment : High resolution coordinates are: Lat: 02 deg 02 min 10 sec S Lon: 147 deg 22 min 31 sec E The daily and monthly values are reasonable and do not reveal any obvious reference level shifts. 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 ---- --- -------------------- --------------- -------------------- 1994 26 none none none 1995 32 90-93,121-365 none none 1996 82 1-66,67-71 none none 1997 100 none none none 1998 99 117-118 none none 1999 100 none (05)259-(00)260 none 2000 100 none (05)259-(00)260 none 2001 100 none (05)259-(00)260 none 2002 100 none none none 2003 95 43-57,241-242, none none 288-290 2004 100 none none none 2005 100 none none none 2006 100 none none none 2007 100 none none none 2008 99 166-169 none none 2009 91 74-90,104-105,187- none none 201,213-216 2010 100 none none none 2011 88 53-60,255-292 none none 2012 92 193-224 none none 2013 100 none none none 2014 66 215-229,230-343 none none 2015 100 none none none 2016 91 218-221,261-271, none none 343-355,356-365 2017 78 1-80 none none 2018 100 none none none