QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 15 Sep 2020 Station : Charleston,OR Latitude: 43 20.7N Country : USA Longitude: 124 19.3W JASL # : 575A Time Meridian: 120W (GMT - 8 hr) GLOSS # : none Originator #:9432780 NODC #: 74123401 Contributor : National Ocean Service (NOS) National Ocean. and Atmos. Administration (NOAA) N/OES22 SSMC4, STATION 7109 1305 East West Highway Silver Spring, MD. 20910-3233 Originator : same Original Data: digital Instrmnt Type: analog-to-digital (ADR) recorder (1970-1993); Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1993-) Digitzd Intvl: six-minute NGWLMS sampling is three-minute average Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot sampling on the hour 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 : 06 Mar 1970 - 31 Dec 2019 Gaps > 1 mon : 01 Jun 1975 - 01 Jul 1978;02 Feb 1980 - 04 Mar 1980 23 May 1991 - 12 Jul 1991;11 Mar 1992 - 09 May 1992 01 Jun 1992 - 02 Jul 1992 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1970-2019 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks. Comment : The daily and monthly means reveal no apparent reference level changes or trends and agree with the nearest stations. The site is referred to as "Charleston, Coos Bay, OR" by the originators. Tsunami from Japan is evident 11 Mar 2011. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1970 79 68-79 none none 1971 100 none none 4,6-7 1972 100 none none 213-215,277-282,343- 344,353 1973 94 16-27,203-213 none 78-80,226-259,292 1974 100 none (08)165-(07)166 37-39,93,121-234,305- (08)267-(07)268 307,314-320 1975 42 152-365 none 2 1976 0 1-366 none none 1977 0 1-365 none none 1978 50 296-298,313-314 (06)341-(00)342 none 1979 100 none (17)024-(03)025 none 1980 89 33-64,78-81,171-172, none none 298-301,340-343 1981 99 314-316 (16)148-(00)149 69-76 (18)166-(16)167 (10)246-(23)246 (16)365-(23)365 1982 96 11-12,165-166,172- (16)244-(11)245 none 173,208-209,225-228, (20)250-(18)251 231-234,302-305 (17)292-(15)293 1983 100 none none 249-266 1984 99 77-80 (04)032-(17)032 123 1985 100 none (09)108-(17)108 none (20)349-(16)350 1986 98 295-296,346-348, (18)074-(14)075 none 364-365 (17)173-(02)174 (19)350-(13)351 (15)351-(09)352 1987 100 none none none 1988 100 none none none 1989 100 none (17)064-(02)065 none (17)134-(14)135 1990 99 182-184,354-355 none none 1991 77 143-193,225-231, (19)014-(02)015 none 237-265 (16)365-(23)365 1992 100 none (07)363-(21)363 none 1993 100 none (17)209-(03)210 none 1994 99 139-141 none none 1995 100 none (15)250-(22)250 none 1996 100 none (15)303-(22)303 none 1997 100 none none none 1998 100 none none none 1999 100 none none none 2000 100 none none none 2001 100 none 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 185-198 2010 100 none none none 2011 100 none none none 2012 99 83-87 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 2019 100 none none none