QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 18 Nov 2019 Station : Vung Tau-B Latitude: 10 20.4N Country : Vietnam Longitude: 107 04.3E JASL # : 383B Time Meridian: 105E (GMT + 7 hr) GLOSS # : none Originator #: 383 NODC #: 11100701 Contributor : University of Hawaii Sea Level Center (UHSLC) 1000 Pope Rd. MSB 317 Honolulu, HI 96822 Originator : UHSLC in collaboration with Marine Hydro-meteorological Center No. 4 Dang Thai Than Street Hanoi VIETNAM Original Data: digital (PRS, RAD, ENC) Instrmnt Type: starting 2007: 1) radar (RAD) gauge (Vega Vegapuls 62) 2) pressure transducer (PRS) 3) Handar Encoder 436-A (ENC), float/well Primary channel used in JASL set: 2007-2015: RAD 2016-2018: ENC *short gaps in primary channel filled with other channels as available; see UHSLC for specific dates Digitzd Intvl: 3 min (RAD); 2 min (PRS); 15 min (ENC) Present Data : Hourly, daily, and monthly values obtained by: Hourly : 3-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 : 15 Oct 2007 - 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. : Yes Distribution : 2007-2018 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. 383A is separate from 383B since they have unique reference zeros. Comment : The daily and monthly means reveal no apparent changes in the reference level. Tidal analysis does not resolve all tidal components thus the residuals have fluctuations. It is assumed the timing is good. JASL Nov 2019 update replaces 2016- 03 Sep 2017. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 2007 21 none none none 2008 100 none none none 2009 100 none (07)123-(23)123 none 2010 93 298-328 (11)020-(23)020 none (12)089-(03)090 (15)096-(23)096 (15)097-(23)097 (16)098-(23)098 (15)099-(23)099 (14)100-(23)100 (15)101-(23)101 (13)102-(23)102 (15)103-(23)103 (15)104-(23)104 (16)106-(23)106 (14)107-(23)107 (14)108-(23)108 (13)109-(23)109 (13)110-(00)111 (12)111-(23)111 (13)112-(23)112 (13)113-(23)113 (13)114-(23)114 (12)115-(23)115 (12)116-(23)116 (11)117-(23)117 (11)118-(23)118 (11)119-(23)119 (12)120-(00)121 (12)121-(23)121 (10)122-(23)122 (12)123-(00)124 (13)124-(23)124 (13)125-(23)125 (13)126-(23)126 (13)127-(23)127 (12)128-(23)128 (12)129-(00)130 (12)130-(23)130 (11)131-(23)131 (13)132-(23)132 (13)133-(23)133 (11)134-(23)134 (11)135-(23)135 (11)136-(00)137 (11)137-(23)137 (11)138-(23)138 (11)139-(23)139 (11)140-(00)141 (11)141-(23)141 (11)142-(23)142 (10)143-(23)143 (12)144-(23)144 (10)145-(01)146 (10)146-(00)147 (16)147-(00)148 (11)148-(00)149 (11)149-(23)149 (11)150-(00)151 (11)151-(23)151 (13)152-(00)153 (12)153-(00)154 (10)154-(23)154 (14)155-(23)155 (10)156-(23)156 (13)158-(00)159 (15)197-(23)197 (16)205-(01)206 (10)206-(01)207 (16)209-(23)209 (16)212-(00)213 (10)213-(00)214 (15)214-(23)214 (14)218-(00)219 (15)219-(00)220 (11)220-(00)221 (13)221-(23)221 (15)222-(23)222 (13)223-(23)223 (17)224-(00)225 (16)225-(23)225 (14)231-(23)231 (15)232-(23)232 (15)233-(00)234 (11)234-(00)235 (09)235-(00)236 (16)236-(23)236 (15)238-(23)238 (16)239-(23)239 (13)240-(00)241 (15)241-(00)242 (15)242-(23)242 (16)243-(23)243 (15)244-(23)244 (15)245-(23)245 (13)246-(23)246 (16)247-(23)247 (14)248-(23)248 (18)254-(01)255 (15)261-(23)261 (15)274-(01)275 (15)276-(23)276 (13)295-(10)296 (22)334-(07)335 2011 99 6-8 (11)181-(18)181 none (16)195-(00)196 (13)196-(00)197 (04)211-(01)212 (09)212-(20)212 (13)213-(00)214 (06)234-(20)234 (05)265-(19)265 (01)350-(17)350 (04)352-(14)352 2012 99 91-92 (04)005-(21)005 none (17)127-(12)128 (08)211-(15)211 2013 99 65-67 (22)063-(05)064 none (13)174-(00)175 2014 100 none none none 2015 100 none none none 2016 100 none none none 2017 99 246-249 none none 2018 100 none none none