QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 11 Oct 2019 Station : Nishinoomote Latitude: 30 44.1N Country : Japan Longitude: 130 59.5E JASL # : 363A Time Meridian: 135E (GMT + 9 hr) GLOSS # : none Originator #: HD21 NODC #: 13130001 Contributor : Japan Oceanographic Data Center 5-3-1 Tukiji, Chuo-ku Tokyo, Japan Originator : Japan Coast Guard Hydrographic and Oceanographic Department Tokyo, Japan Original Data: analog Instrmnt Type: LFT-4 or LFT-5,float and stilling well gauge Digitzd Intvl: hourly Present Data : Hourly, daily, and monthly values obtained by: Hourly : hourly spot reading 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 : 21 Apr 1965 - 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. : No Distribution : 1965-2018 Refernce Levl: All data are referred to a Datum Line (DL) associated with the tide gauge. The Standard Mark (SM) is physically located near the tide gauge and is directly leveled to a First Order Bench Mark of the Geographical Survey Institute. The SM in 2001 was 5.463m above the DL. Comment : Timing is occasionally poor from 1965-1979. Only large shifts are noted below. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1965 68 214-222 (05)177-(14)177 none 1966 98 276-282,283-285 none none 1967 97 5-17 none 87-92,321-324 1968 100 none none 176-183 1969 96 241-244,308-310, none 2-5,46-47,121-125, 312-322,323-325 152-155,182-184,223- 225,344-347 1970 94 192-213 none 4-151 1971 99 189-191 none 221-223 1972 100 none none 1-166 1973 99 87-89,120-123 none 18-20,124-125 1974 100 none none none 1975 99 179-184 none none 1976 99 32-34 none none 1977 99 209-213 none none 1978 100 none none 1-365 1979 99 189-191 none 1-365 1980 85 242-263,318-325, none 87-89,313-331 336-362 1981 97 83-89,116-120, none none 166-167 1982 99 39-40,274-278 none none 1983 100 none none none 1984 100 none none none 1985 100 none none none 1986 94 338-348,354-365 none 1999-211 1987 97 12-24 none none 1988 100 none none none 1989 100 none none none 1990 100 none none none 1991 100 none none none 1992 99 14-19,364-366 none none 1993 99 1 none none 1994 100 none none none 1995 100 none none none 1996 100 none none none 1997 100 none none none 1998 99 57-61 none none 1999 96 266-280 (05)245-(02)246 none 2000 99 281-287 (12)085-(08)086 none 2001 100 none none none 2002 100 none none none 2003 92 49-77 none none 2004 100 none none none 2005 100 none none none 2006 99 322-324,329-331 none 332 2007 100 none (01)207-(14)207 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 100 none none none 2015 100 none none none 2016 99 321-323 none none 2017 99 217-219,260-262 none none 2018 99 272-274,365 none none