QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 25 Sep 2019 Station : Easter-C Latitude: 27 09.3S Country : Chile Longitude: 109 28.4W JASL # : 022C Time Meridian: 090W (GMT - 6 hr) GLOSS # : 137 Originator #:0305 NODC #: 52107901 Contributor : Servicio Hidrografico y Oceanografico de la Armada (SHOA) Casilla 324 Valparaiso, Chile Originator : same Original Data: analog (BUB), digital (all others) Instrmnt Type: 1) Bristol bubbler gauge (BUB) (1970-1977, 1985-2002) 2) Fischer and Porter Analog-to-Digital Recorder (ADR) (3/1977-8/1984) 3) NOAA "digibub" water level gauge (PRS) which uses a nitrogen-driven bubbler oriface below the water line connected to a Para- scientific pressure transducer located at the DCP housing. The pressure transducers are vented to the atmosphere so no atmospheric corrections are required. 3) NOAA backup pressure water level gauge (BWL) 4) Druck PTX 1830 Pressure Sensor (2000-) vented for atmospheric pressure providing a continuous correction for changes in atmospheric pressure (differential pressure transducer). Druck measures the same level as a conventional float/well gauge. 5) Aquatrak acoustic gauge (AAG) 6) Vega Vegapuls 62 radar (RAD) (11/2010-) Digitzd Intvl: one hour (BUB); 6 min (PRS,RAD); 30 min (BWL) 2 min (PTX); 6 min (AAG) Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot hourly (BUB,PTX); 3-point Hanning filter centered on the hour (others) 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 : 02 Apr 1970 - 31 Dec 2018 Gaps > 1 mon : 26 Jul 1972 - 14 Sep 1972;01 Oct 1973 - 01 Jan 1974 01 Sep 1974 - 01 Oct 1974;01 Mar 1977 - 02 Apr 1977 25 Jun 1977 - 01 Aug 1977;01 Sep 1978 - 01 Nov 1978 05 May 1979 - 05 Jun 1979;30 Dec 1979 - 01 Jan 1981 01 Jan 1982 - 01 Jan 1984;01 Aug 1984 - 19 Dec 1984 05 Feb 1989 - 10 Mar 1989;18 Feb 1991 - 27 Jul 1991 07 Apr 2003 - 09 Sep 2003;19 May 2004 - 03 Sep 2004 01 Jun 2011 - 08 Jul 2011;09 Feb 2017 - 06 Jun 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 : 1970-2018 Refernce Levl: The originators have related the data to the primary bench mark, BM#15. Series 022A and 022B are kept seperate due to unknown linkage between the zero reference level of each. Comment : The originators re-examined the historic data and applied a thorough calibration and correction. All years in the JASL archive, previously within separate series (022C, 022D, and 022E) were replaced in February 2004 with the originator's updated series, now referred to as 022C. The timing is good. Gaps were filled with the following: #: PRS $: Satellite-received Bubbler &: Satellite-received (AAG) Tsunami signal is evident in the hourly residuals beginning 27 February, 2010. The residuals show large short-period noise for select periods during austral winter months. Data received by satellite communications at the UHSLC were used to fill gaps in the original SHOA series for the following periods: yyyy/mm/dd hh yyyy/mm/dd hh source 2007/08/01 12Z 2008/01/01 05Z AAG 2008/04/29 09Z 2008/04/30 14Z AAG 2008/10/21 10Z 2008/10/22 11Z AAG 2008/12/12 06Z 2008/12/14 13Z AAG 2009/01/06 10Z 2009/01/09 13Z AAG 2009/01/13 08Z 2009/01/14 20Z AAG 2009/08/07 06Z 2009/08/08 15Z AAG 2009/09/08 04Z 2009/09/09 04Z PTX 2010/03/11 12Z 2010/03/16 11Z AAG 2010/03/19 12Z 2010/03/26 12Z AAG 2010/04/03 15Z 2010/04/06 09Z AAG 2010/04/22 13Z 2010/04/26 16Z AAG 2010/05/03 15Z 2010/06/07 12Z PTX 2010/07/16 14Z 2010/07/18 20Z PTX 2010/09/17 19Z 2010/09/18 19Z PTX 2010/11/05 13Z 2010/11/23 01Z PTX CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1970 73 98-101,182-186, (07)144-(06)145 none 215-216 (16)152-(23)152 (16)158-(23)158 (16)213-(23)213 1971 92 15-17,60-63,79-82, (13)148-(22)148 none 91-95,152-156,237- (05)257-(15)257 247,286-288,342-345 (16)274-(23)274 (01)311-(09)311 (02)312-(10)312 (01)313-(10)313 (02)314-(00)315 (08)324-(15)324 (07)001-(15)001 1972 83 25-26,60-61,73-75, (00)088-(23)088 none 86-87,90-91,120-121, (05)131-(16)131 149-150,208-258,265- (05)336-(18)336 266,341-342,365 1973 75 1,151-153,274-365 (08)077-(23)077 none (00)102-(19)102 (07)183-(04)184 (23)237-(07)238 1974 88 1,25-26,42-53, (08)028-(22)028 none 244-274 (03)130-(15)130 1975 100 none (05)285-(19)285 none 1976 100 none (08)183-(16)183 none 1977 79 60-92,121-126,176- (08)160-(16)160 40-60,346-354 213,257-259,267-268 (00)307-(19)307 (18)331-(01)332 (10)333-(22)333 1978 70 7-20,46-47,184-213, (15)345-(13)346 5-7 225-229,244-305 (21)001-(07)002 1979 84 3-11,30-33,80-82,97- none none 98,125-156,193-195, 199-200,215-217,240- 242,25-247,364-365 1980 0 1-366 none none 1981 99 9-10 (21)060-(17)061 none (01)126-(18)126 (00)225-(18)225 1982 0 1-365 none none 1983 0 1-365 none none 1984 60 1,117-118,161-164, (06)186-(00)187 none 169-170,214-354 1985 98 112-113,127-132, (19)091-(07)092 none 249-250 (13)347-(20)347 (15)361-(01)362 1986 98 59-62,66-67,338-340 (04)328-(13)328 91-93 1987 98 25-27,121-123,365 (07)097-(06)098 none (21)342-(20)343 1988 98 1-2,68-69,93-94,153- (07)182-(06)183 20-22,55-58,74-76 155,253-255,301-302 (00)272-(17)272 (11)289-(20)289 (09)305-(16)305 1989 91 36-69 (08)106-(22)106 none (13)121-(00)122 (12)274-(06)275 (05)318-(20)318 1990 94 58-66,125-134,361- (07)010-(18)010 none 362,363-365 (18)357-(14)358 (06)360-(17)360 1991 54 1-3,49-208,242-244 (20)030-(14)031 none (08)034-(15)034 (04)040-(15)040 (02)043-(17)043 (01)227-(14)227 (21)259-(17)260 1992 98 174-176,243-245, (00)001-(14)001 none 336-338 1993 93 17-20,31-35,47-49, (22)058-(13)059 195-197,295 74-76,103-105,256- (07)060-(19)060 267,335-337 (20)080-(18)081 1994 99 257-259 (02)043-(13)043 none (18)253-(06)254 1995 100 none (02)060-(15)060 none (17)304-(07)305 #(18)172-(16)174 #(19)254-(16)256 #(16)330-(17)333 #(08)335-(17)337 1996 100 none (17)152-(06)153 none (20)303-(16)304 (17)366-(06)001 #(08)050-(23)052 #(08)092-(16)093 1997 99 221-224 (18)090-(06)091 none (08)121-(20)121 (09)122-(16)122 (20)140-(15)141 (17)181-(16)182 #(16)026-(16)027 #(05)117-(18)118 $(17)212-(16)227 $(02)260-(16)261 1998 99 60-62 (08)032-(18)032 none (08)091-(16)091 (00)339-(23)339 $(17)306-(02)308 $(00)333-(06)335 1999 92 325-352 (21)223-(16)224 none (21)322-(17)323 (01)356-(18)356 #(16)010-(16)012 2000 99 54-56 (17)083-(00)084 none (15)101-(00)102 (14)111-(13)112 (13)119-(12)120 (21)193-(19)194 $(14)095-(19)099 2001 100 none (13)082-(12)083 none (04)105-(11)105 (15)272-(14)273 (15)299-(12)300 (12)362-(09)363 #(13)079-(14)080 #(13)138-(12)140 #(14)257-(12)259 #(12)318-(14)320 #(12)348-(16)351 2002 90 53-54,79-82,88-89, (15)004-(00)005 none 109-111,159-160,298- (20)007-(05)008 301 (19)008-(03)009 (22)011-(05)012 (17)040-(00)041 (13)084-(12)085 (22)130-(21)131 (07)132-(15)132 (06)147-(15)147 (06)149-(15)149 (13)151-(22)151 (04)155-(16)155 (07)162-(17)162 (07)170-(16)170 (04)171-(16)171 (03)172-(16)172 (03)174-(16)174 (05)175-(15)175 (03)178-(12)178 (04)179-(14)179 (05)180-(15)180 (05)182-(15)182 (09)202-(16)202 (13)207-(21)207 (06)214-(16)214 (07)229-(14)229 (06)236-(15)236 (03)242-(18)242 (13)256-(21)256 (06)263-(17)263 (17)270-(11)271 (20)285-(06)286 (13)291-(01)292 #(14)208-(00)210 #(14)243-(00)245 2003 50 1-28,97-252 (22)263-(12)264 none (15)269-(09)270 (19)270-(15)271 (15)273-(02)274 (17)285-(06)286 (18)290-(08)291 (09)300-(18)300 (00)305-(11)305 (12)312-(22)312 (02)320-(09)320 (01)330-(11)330 (20)330-(10)331 (18)333-(09)334 (17)335-(10)336 (23)336-(11)337 (16)337-(09)338 (14)338-(09)339 (18)339-(08)340 (18)340-(09)341 (11)342-(08)343 (19)345-(07)346 (15)347-(09)348 (13)348-(09)349 (10)350-(03)351 (11)351-(05)352 (10)352-(06)353 (11)353-(02)354 (14)355-(09)356 (10)357-(05)358 (10)358-(02)359 (11)361-(10)362 (13)362-(05)363 (11)363-(02)364 (11)365-(05)001 2004 51 20-24,133-134,136- (16)002-(23)002 none 137,140-247,255-262, (09)003-(07)004 264-323 (11)004-(04)005 (11)005-(05)006 (11)006-(02)007 (10)007-(06)008 (11)012-(10)013 (11)015-(01)016 (11)019-(03)020 (17)023-(10)024 (17)024-(11)025 #(12)053-(01)055 (12)056-(03)057 (10)057-(05)058 (11)058-(07)059 (12)064-(07)065 (13)066-(03)067 (11)069-(06)070 (22)072-(19)073 (12)075-(08)076 #(13)077-(20)078 (11)092-(00)093 (18)094-(12)095 (11)100-(19)100 (15)107-(12)108 (11)115-(21)115 (13)120-(07)121 (07)123-(05)124 (13)130-(10)131 (04)135-(14)135 (05)138-(18)138 (01)139-(16)139 (02)140-(17)140 (19)197-(17)198 (03)201-(12)201 (03)202-(15)202 (07)203-(15)203 (04)207-(02)208 (03)263-(14)263 2005 99 73-74 (10)008-(18)008 none (17)066-(09)067 (12)067-(06)068 (16)071-(15)072 (21)075-(19)076 (11)078-(20)078 (12)085-(10)086 (11)099-(08)100 (06)108-(14)108 (07)109-(14)109 (04)110-(11)110 (06)120-(14)120 (03)122-(13)122 (07)139-(14)139 (04)144-(14)144 (06)145-(14)145 (05)146-(12)146 (20)152-(11)153 (14)162-(08)163 (03)173-(11)173 (05)174-(15)174 #(04)177-(16)178 (02)179-(15)179 (14)180-(05)181 (02)187-(15)187 (03)190-(13)190 (01)191-(09)191 (02)192-(09)192 (05)194-(14)194 (02)196-(15)196 (03)197-(16)197 #(03)198-(06)203 (20)203-(11)204 (01)207-(13)207 (05)209-(15)209 (03)210-(15)210 #(01)214-(04)215 (07)217-(14)217 (02)218-(19)218 (01)219-(23)219 (01)220-(15)220 (17)221-(03)222 (07)223-(19)223 (00)224-(20)224 (07)229-(15)229 (11)234-(02)235 (05)237-(16)237 (03)239-(15)239 (07)244-(14)244 (03)245-(14)245 (03)251-(10)251 (05)252-(14)252 (07)255-(14)255 (07)256-(14)256 (02)265-(15)265 (07)274-(14)274 (09)282-(16)282 (04)297-(14)297 (06)305-(13)305 2006 100 none (06)122-(23)122 none (05)125-(14)125 (04)126-(11)126 (19)127-(03)128 (02)133-(15)133 (03)135-(10)135 (13)195-(08)196 (01)297-(09)297 (02)298-(15)298 &(09)302-(14)305 (07)308-(14)308 (03)309-(10)309 (10)364-(07)365 2007 100 none (04)081-(20)081 none (00)194-(11)194 2008 100 none (05)102-(13)102 none (07)130-(17)130 (07)131-(14)131 (11)143-(10)144 (04)168-(15)168 (05)169-(13)169 (06)170-(16)170 (07)171-(16)171 (03)173-(16)173 (05)180-(16)180 (03)181-(15)181 (02)182-(16)182 (05)184-(13)184 (03)188-(15)188 (01)190-(15)190 (01)191-(17)191 (03)192-(15)192 (06)195-(18)195 (01)199-(17)199 (00)200-(17)200 (02)202-(16)202 (00)203-(09)203 (02)209-(15)209 (06)210-(15)210 (06)211-(14)211 (04)213-(15)213 (06)214-(15)214 (05)215-(15)215 (04)216-(15)216 (06)217-(15)217 (07)218-(15)218 (04)219-(15)219 (23)226-(07)227 (01)230-(15)230 (16)232-(00)233 (22)233-(14)234 (04)236-(13)236 (01)237-(08)237 (03)240-(14)240 (02)242-(12)242 (01)262-(14)262 (04)276-(14)276 (04)277-(14)277 (00)279-(12)279 (04)290-(14)290 (03)298-(14)298 (02)303-(10)303 (04)305-(14)305 (04)306-(14)306 (04)311-(11)311 (04)313-(11)313 (04)314-(13)314 (04)315-(11)315 (04)316-(13)316 (05)326-(14)326 (05)329-(14)329 (04)334-(13)334 (05)335-(12)335 (06)337-(13)337 (06)340-(13)340 (04)341-(13)341 (03)351-(13)351 (06)352-(13)352 (09)366-(05)001 2009 98 314-324 (06)002-(13)002 none (06)005-(13)005 (10)016-(09)017 (04)185-(13)185 (03)189-(13)189 (03)192-(12)192 (05)193-(14)193 (05)194-(14)194 (07)199-(16)199 (05)204-(18)204 (06)205-(16)205 (08)218-(15)218 (04)224-(14)224 (03)228-(10)228 (07)229-(14)229 (05)230-(15)230 (04)231-(15)231 (04)233-(14)233 (06)234-(13)234 (03)236-(17)236 (02)237-(13)237 (06)242-(14)242 (03)243-(15)243 (02)244-(14)244 (03)246-(14)246 (00)247-(14)247 (22)248-(14)249 (02)250-(15)250 (06)252-(14)252 (21)256-(18)257 (16)258-(23)258 (11)259-(10)260 (15)261-(23)261 (15)263-(00)264 (16)264-(03)265 (15)265-(01)266 (16)266-(02)267 (16)269-(00)270 (15)274-(00)275 (16)275-(00)276 (14)299-(01)300 (15)300-(01)301 (14)301-(01)302 (14)303-(01)304 (16)304-(00)305 (14)311-(02)312 (14)312-(01)313 2010 99 364-365 (20)007-(11)008 none (15)014-(11)015 (13)061-(11)062 (14)105-(12)106 (06)153-(21)153 (13)201-(22)201 (20)231-(13)232 2011 83 1,23-24,34-35,48-49, (18)006-(14)007 1-2,70,79,134-135, 59-62,123-132,152- (15)013-(12)014 145-147,189-190,204, 189,202-203,272-274, (14)039-(08)040 240,265 276-281,287-291 (14)045-(04)046 (13)105-(20)105 (13)133-(21)133 (14)245-(21)245 (05)260-(14)260 (15)264-(22)264 (18)335-(13)336 2012 95 41-42,116-119,139- (00)070-(19)070 240-241 140,159-161,181-185, (14)089-(13)090 201-203,286-289,333- (22)171-(07)172 335 (15)254-(23)254 (13)258-(06)259 (10)259-(07)260 (13)260-(02)261 (13)268-(06)269 (08)269-(17)269 (14)279-(00)280 (14)280-(23)280 (16)281-(00)282 (12)282-(19)282 (14)283-(21)283 2013 99 51-53,144-145 (21)017-(19)018 none (11)041-(06)042 (01)108-(20)108 (17)113-(14)114 (18)116-(12)117 (04)189-(15)189 (14)200-(21)200 (20)207-(06)208 (16)214-(08)215 (23)291-(06)292 2014 99 83-84 (10)086-(19)086 none (06)090-(20)090 (22)090-(14)091 (06)097-(13)097 (06)098-(13)098 (06)099-(14)099 (06)101-(15)101 (20)147-(08)148 (10)168-(18)168 (08)228-(04)229 2015 99 336-337 (00)168-(14)168 none 2016 95 160-166,264-265,291- (02)028-(19)028 none 292,314-319,355-362 (13)212-(20)212 (21)215-(15)216 (05)225-(14)225 (01)231-(15)231 (01)233-(18)233 (04)235-(20)235 (03)236-(14)236 (02)237-(14)237 (04)238-(16)238 (05)239-(14)239 (10)266-(00)267 (02)267-(15)267 (19)288-(11)289 (13)289-(22)289 (06)290-(21)290 (23)290-(07)291 (03)293-(11)293 (17)294-(16)295 (09)309-(18)309 (01)353-(17)353 (01)354-(18)354 (20)354-(04)355 (05)362-(20)362 2017 68 40-157 none none 2018 99 361-364 (19)124-(04)125 none (02)138-(01)139 (13)247-(20)247