QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 18 Oct 2019 Station : Majuro-B Latitude: 07 06.5N Country : Republic of Marshall Is. Longitude: 171 22.3E JASL # : 005B Time Meridian: 180E (GMT + 12 hr) GLOSS # : 112 Originator #: ID070002 NODC #: 10177101 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 minutes (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 : 14 May 1993 - 31 Dec 2018 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. : Yes Distribution : 1993-2018 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 USCG BM4 in the 1993 survey. Height of Seaframe Sensor Bench Mark (SSBM) above TGZ is 3.8486m. Series 005A is separate from 005B because they are at different locations. Comment : At some time in the future, a single series from 005A and 005B will be created. At present, use of data for the years of overlap are at the discretion of the data users. High resolution coordinates are: Lat: 07 deg 06 min 27 sec N Lon: 171 deg 22 min 15 sec E The station is in the district of Uliga. The daily and monthly means reveal no apparent changes in the reference level and agree with Ponape. 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 ---- --- -------------------- --------------- -------------------- 1993 60 139-140,155-156,210- none none 211,213-214,227-235 1994 100 none none none 1995 97 63-67,90-93,200-204 (20)103-(09)104 none 1996 100 none none none 1997 96 240-257 (23)008-(22)009 none (03)013-(20)013 1998 100 none none none 1999 90 213-240,257-264, none none 335-337 2000 94 7-13,16-32 none none 2001 99 289-290 none none 2002 95 260-280 none none 2003 100 none none none 2004 100 none none none 2005 99 47-48 none none 2006 98 194-199,247-251 none none 2007 99 88-91 none none 2008 100 none none none 2009 100 none none none 2010 100 none none none 2011 100 none none none 2012 98 340-347 none none 2013 100 none none none 2014 100 none none none 2015 100 none none none 2016 100 none none none 2017 100 none none none 2018 100 none none none