QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated 29 Jan 2004 Station : Base Prat-A Latitude: 62 29.0S Country : Chile Longitude: 059 38.0W JASL # : 730A Time Meridian: 060W (GMT - 4 hr) GLOSS # : 189 Originator #:1310 NODC #: 56052901 Contributor : Servicio Hidrografico y Oceanografico de la Armada (SHOA) Valparaiso CHILE Originator : same Original Data: analog and digital Instrmnt Type: Metercraft bubbler (1984-2001) Aaderaa Pressure Sensor (2002-) Digitzd Intvl: spot hourly Present Data : Hourly, daily, and monthly values obtained by: Hourly : The original digitizing interval was hourly 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 : 07 Mar 1984 - 31 Dec 2002 Gaps > 1 mon : 31 Oct 1991 - 01 Dec 1991;29 May 1994 - 19 Nov 1994 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1984-2002 Refernce Levl: The originators have related the data to the primary bench mark, BM#1, a 6 cm bronze disk stamped "CF 1" set in cement at the right of the main entrance to Base Prat building. Data are made available by SHOA starting again in 2011. The reference level has apparently changed, thus the series are separated into 730A and 730B. Comment : The data appear of good quality. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1984 79 123-126,182-185,213- (20)152-(19)153 none 216,274-276 (00)293-(11)293 (10)359-(08)360 1985 99 88-89 (04)224-(12)224 none (20)365-(13)001 1986 97 48-59 none none 1987 93 16-31,53-54,87-90, (06)013-(03)014 102-104 116-117,140-142,183- (21)031-(09)032 185,334-335 (20)128-(19)129 (06)212-(04)213 1988 100 none none 1989 99 34-37,353-355 none none 1990 95 31-33,350-365 none none 1991 91 1-2,304-335,342-353 (11)340-(08)341 none (06)364-(14)364 (20)365-(04)001 1992 100 none (23)207-(06)208 none (03)275-(19)275 (06)353-(00)354 1993 99 51-56 (10)011-(01)012 none (09)061-(05)062 1994 52 149-323,351-352 (17)021-(06)022 none (18)001-(16)002 1995 100 none (19)011-(16)012 152-212 (22)020-(05)021 (07)100-(05)101 (08)182-(19)182 (20)243-(04)244 (20)273-(03)274 1996 100 none (17)133-(05)134 none 1997 100 none (10)117-(06)118 none (15)214-(09)215 (08)216-(15)216 (06)315-(14)315 (16)321-(05)322 (17)338-(05)339 (20)343-(05)344 1998 99 31-33,234-236 (06)055-(05)056 none (09)209-(05)210 (09)244-(05)245 1999 99 296-297 (18)013-(14)014 none (20)273-(05)274 (20)334-(05)335 (06)365-(19)365 2000 99 304-305 (06)060-(05)061 none (06)104-(05)105 (08)147-(06)148 (20)366-(07)001 2001 100 none none none 2002 100 none (19)317-(04)318 none