QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 07 Nov 2019 Station : Pt. La Rue Latitude: 04 40.3S Country : Seychelles Longitude: 055 31.7E JASL # : 121A Time Meridian: 060E (GMT + 4 hr) GLOSS # : 339 Originator #: 121 NODC #: 30054502 Contributor : UH Sea Level Center 1000 Pope Rd. MSB 317 Honolulu, Hawaii 96822 Originator : UH Sea Level Center in collaboration with Directorate of Civil Avaition P. O. Box 181 Seychelles International Airport REPUBLIC OF SEYCHELLES Original Data: digital Instrmnt Type: 1. 1993 - 9/2008 Handar Encoder 436-A, ENC 2. 1993 - 2007 Handar Encoder 436-B, ENB 3. 8/2006- radar (RAD) gauge (Vega Vegapuls 62) 4. 8/2006- pressure transducer (PRS) backup 5. 05/2009-11/2011 radar (RA2) Sutron RLR Primary channel used in JASL set: 1993-09/2008: (ENC) 10/2009-2018: (RAD) *short gaps in primary channel filled with other channels as available; see UHSLC for specific dates Digitzd Intvl: 4 min (ENC); 15 min (ENB); 3 min (RAD); 2 min (PRS); 10 min (RA2) Present Data : Hourly, daily, and monthly values obtained by: Hourly : A three-point Hanning filter centered 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 : 11 Jan 1993 - 31 Dec 2018 Gaps > 1 mon : 15 Sep 1997 - 30 Oct 1997;05 Nov 2006 - 12 Dec 2006 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: Heights are referred to the station tide staff zero, which is linked to land-based benchmarks. This reference zero is unique to this station and is not an official datum (chart, national, etc.) and is not relative to local tidal parameters, such as mean lower low water. See the Originators for benchmark descriptions, maps, and the geodetic levelling history. Comment : This site replaces Port Victoria. At present, the series have not been linked together. High mean levels Nov-Dec 1997 appear true based on calibration information and message from tide observer who noted moderate coastal flooding during this period. JASL Nov 2019 update replaces 2016- 05 Sep 2017. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1993 97 62-63 none none 1994 100 none none none 1995 99 265-266 none none 1996 100 none none none 1997 88 258-303 none none 1998 94 219-240 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 99 207-209 (17)026-(05)027 none 2005 99 173-176 (16)119-(01)120 none (15)138-(00)139 (10)140-(17)140 (14)167-(11)168 (11)170-(00)171 (23)177-(07)178 (13)179-(23)179 (16)199-(23)199 (11)234-(23)234 (15)357-(23)357 2006 87 212-222,209-346 (10)065-(08)066 none (06)086-(23)086 (06)178-(13)178 (11)208-(01)209 (00)223-(09)223 (00)365-(12)365 2007 99 260-262 (19)094-(04)095 none 2008 100 none none none 2009 100 none (02)060-(10)060 none (23)065-(12)066 (00)067-(10)067 (22)068-(08)069 (07)123-(23)123 2010 100 none (12)089-(04)090 none (16)214-(03)215 (17)215-(04)216 (16)216-(04)217 (17)217-(03)218 (17)218-(03)219 (17)219-(03)220 (17)220-(03)221 (17)221-(04)222 (16)222-(04)223 (16)223-(03)224 (16)224-(03)225 (16)225-(03)226 (16)226-(03)227 (15)227-(03)228 (15)228-(03)229 (16)229-(03)230 (15)230-(03)231 (15)231-(03)232 (15)232-(03)233 (15)233-(03)234 (15)234-(03)235 (14)235-(03)236 (15)236-(03)237 (14)237-(03)238 (14)238-(03)239 (14)239-(03)240 (14)240-(03)241 (15)241-(03)242 (14)242-(03)243 (14)243-(03)244 (14)244-(03)245 (14)245-(04)246 (14)246-(04)247 (14)247-(04)248 (13)248-(05)249 (14)249-(03)250 (13)250-(04)251 (13)251-(03)252 (13)252-(03)253 (14)253-(03)254 (14)254-(03)255 (14)255-(03)256 (14)256-(06)257 (13)257-(03)258 (13)258-(03)259 (13)259-(04)260 (14)260-(03)261 (13)261-(03)262 (13)262-(03)263 (14)263-(03)264 (14)264-(03)265 (13)265-(03)266 (14)266-(03)267 (14)267-(03)268 (13)268-(04)269 (13)269-(03)270 (13)270-(03)271 (14)271-(03)272 (14)272-(03)273 (13)273-(03)274 (14)274-(03)275 (14)275-(03)276 (13)276-(03)277 (13)277-(03)278 (13)278-(03)279 (14)279-(03)280 (13)280-(04)281 (13)281-(03)282 (13)282-(03)283 (14)283-(03)284 (14)284-(03)285 (14)285-(03)286 (14)286-(03)287 (14)287-(03)288 (14)288-(03)289 (14)289-(04)290 (13)290-(03)291 (14)291-(02)292 (14)292-(03)293 (13)293-(03)294 (14)294-(03)295 (13)295-(02)296 (00)335-(07)335 2011 92 282-292,294-296, (11)181-(18)181 none 302-315 2012 100 none none none 2013 100 none (05)012-(12)012 none (02)022-(12)022 (19)022-(03)023 (11)027-(03)028 (19)028-(03)029 (20)033-(03)034 (07)048-(03)049 (13)174-(23)174 (10)344-(18)344 (15)351-(22)351 2014 100 none (02)035-(12)035 none (10)047-(17)047 (02)048-(10)048 (15)080-(00)081 (15)084-(22)084 (15)178-(23)178 (08)227-(17)227 (23)230-(06)231 (21)235-(06)236 (23)239-(08)240 (22)256-(10)257 2015 100 none none none 2016 100 none none none 2017 100 none none none 2018 97 201-211 (18)133-(03)134 none (17)134-(02)135 (15)135-(05)136 (14)136-(03)137 (14)137-(03)138 (10)138-(03)139 (14)139-(02)140 (13)140-(04)141 (14)141-(02)142 (15)142-(03)143 (16)143-(02)144 (15)144-(03)145 (16)145-(02)146 (14)146-(02)147 (16)147-(03)148 (14)148-(03)149 (14)149-(03)150