Data



Data Notes



Extracted from Database

17 Jun 2019

ENGLISH BAY (ASCENSION ISLAND)

Station Information

Station ID: 1831
Latitude: -7.892847
Longitude: -14.385719
GLOSS ID: 263
Coastline code: 402
Station code: 1
Country: SAINT HELENA, ASCENSION AND TRISTAN DA CUNHA
Time span of data: 1993 – 2013
Completeness (%): 63
Link to ellipsoid: Available
Date of last update: 02 Oct 2014

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at ENGLISH BAY (ASCENSION ISLAND).

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at ENGLISH BAY (ASCENSION ISLAND).

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: ASC1, ASCG
Fast Delivery Data from UHSLC station 291: hourly and daily
Research Quality Data from UHSLC station 291: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1998-12-01

values for March 1997 to January 1998 were revised in November 1998

Documentation added 1999-11-18

Original POL 'B gauge' installed May 1993 which ran until June
1998, then replaced with new 'B gauge' in March 1999.

Documentation added 2000-04-26

Ascension 402/001 RLR(1993) is 10.184m below BM POL13

Documentation added 2002-09-10

Ascension gauge failed March 2001.

Documentation added 2014-06-30

The datum history at Ascension is complicated. Half-tide ref. 1993-1998 and 2006-2007 was used for the data June 1993-June 1998 and again for data Jan. 2006-Dec 2007. Half-tide datum Apr. 1999-Mar. 2001 was used specifically for that period. Half-tide ref. Ascension B datum Sept. 2005 was used for Nov. and Dec data 2005 and also data for Jan.2008- May 2010. Full tide datum B gauge 870mm below the original datum for 1993-1998 and 2006-2007 was used for data Dec. 2010 onwards.

Data Authority

British Oceanographic Data Centre
National Oceanography Centre
Joseph Proudman Building, 6 Brownlow Street
Liverpool
L3 5DA