A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island

In 2008 a new pressure tide gauge with Global Sea Level Observing System Number 187 was installed at King Edward Point (KEP), South Georgia Island, South Atlantic Ocean. This installation was carried out as part of the Antarctic Circumpolar Current Levels by Altimetry and Island Measurements (ACCLAI...

Full description

Bibliographic Details
Main Authors: Teferle, Felix Norman, Hunegnaw, Addisu, Woodworth, P. L., Foden, Peter R., Williams, S. D. P., Pugh, Jeffrey, Hibbert, Angela
Format: Conference Object
Language:English
Published: 2015
Subjects:
Online Access:https://orbilu.uni.lu/handle/10993/21230
id ftunivluxembourg:oai:orbilu.uni.lu:10993/21230
record_format openpolar
spelling ftunivluxembourg:oai:orbilu.uni.lu:10993/21230 2024-10-20T14:03:36+00:00 A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island Teferle, Felix Norman Hunegnaw, Addisu Woodworth, P. L. Foden, Peter R. Williams, S. D. P. Pugh, Jeffrey Hibbert, Angela 2015-06-12 80 x 100 cm https://orbilu.uni.lu/handle/10993/21230 en eng https://orbilu.uni.lu/handle/10993/21230 info:hdl:10993/21230 Global and Regional Sea Level Variability and Change, Palma de Mallorca, Spain [ES], from 10-06-2015 to 12-06-2015 Global Navigation Satellite Systems South Atlantic Ocean King Edward Point Tide Gauge South Georgia Island Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2015 ftunivluxembourg 2024-09-27T07:04:04Z In 2008 a new pressure tide gauge with Global Sea Level Observing System Number 187 was installed at King Edward Point (KEP), South Georgia Island, South Atlantic Ocean. This installation was carried out as part of the Antarctic Circumpolar Current Levels by Altimetry and Island Measurements (ACCLAIM) programme. In 2013 the KEP Geodetic Observatory was established in support of various scientific applications including the monitoring of vertical land movements at KEP. Currently, the observatory consists of two state-of-the-art Global Navigation Satellite System (GNSS) stations with local benchmark networks. In 2014 a tide board was added to the tide gauge, which, together with the measurements from the KEP Geodetic Observatory, now enables a calibration of the tide gauge. This will make it possible to include the KEP tide gauge in the Permanent Service for Mean Sea Level (PSMSL) database and make it available for future sea level studies. In this study, we will present the GNSS and levelling observations from the KEP Geodetic Observatory for the period from February 2013 to May 2015 used for the calibration of the tide gauge. While it is still too early to obtain accurate vertical land movement estimates from the GNSS data, the levelling campaigns in 2013 and 2014 indicated 7-9 mm of subsidence near the tide gauge. For the computation of the new height datum, geoid undulations derived from a seamless combination of the latest Gravity Observation Combination (GOCO) and Earth Gravitational Model (EGM) 2008 models were used. The use of this combined gravity model introduced a datum shift of approximately -24 cm compared to the previous datum. New Geodetic Infrastructure and Re-Processed GPS Solutions for Sea Level, Climate Change and Geodynamics (GSCG) Conference Object Antarc* Antarctic South Atlantic Ocean South Georgia Island University of Luxembourg: ORBilu - Open Repository and Bibliography Antarctic The Antarctic South Georgia Island ENVELOPE(-36.750,-36.750,-54.250,-54.250) King Edward Point ENVELOPE(-36.496,-36.496,-54.284,-54.284)
institution Open Polar
collection University of Luxembourg: ORBilu - Open Repository and Bibliography
op_collection_id ftunivluxembourg
language English
topic Global Navigation Satellite Systems
South Atlantic Ocean
King Edward Point
Tide Gauge
South Georgia Island
Physical
chemical
mathematical & earth Sciences
Earth sciences & physical geography
Physique
chimie
mathématiques & sciences de la terre
Sciences de la terre & géographie physique
spellingShingle Global Navigation Satellite Systems
South Atlantic Ocean
King Edward Point
Tide Gauge
South Georgia Island
Physical
chemical
mathematical & earth Sciences
Earth sciences & physical geography
Physique
chimie
mathématiques & sciences de la terre
Sciences de la terre & géographie physique
Teferle, Felix Norman
Hunegnaw, Addisu
Woodworth, P. L.
Foden, Peter R.
Williams, S. D. P.
Pugh, Jeffrey
Hibbert, Angela
A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
topic_facet Global Navigation Satellite Systems
South Atlantic Ocean
King Edward Point
Tide Gauge
South Georgia Island
Physical
chemical
mathematical & earth Sciences
Earth sciences & physical geography
Physique
chimie
mathématiques & sciences de la terre
Sciences de la terre & géographie physique
description In 2008 a new pressure tide gauge with Global Sea Level Observing System Number 187 was installed at King Edward Point (KEP), South Georgia Island, South Atlantic Ocean. This installation was carried out as part of the Antarctic Circumpolar Current Levels by Altimetry and Island Measurements (ACCLAIM) programme. In 2013 the KEP Geodetic Observatory was established in support of various scientific applications including the monitoring of vertical land movements at KEP. Currently, the observatory consists of two state-of-the-art Global Navigation Satellite System (GNSS) stations with local benchmark networks. In 2014 a tide board was added to the tide gauge, which, together with the measurements from the KEP Geodetic Observatory, now enables a calibration of the tide gauge. This will make it possible to include the KEP tide gauge in the Permanent Service for Mean Sea Level (PSMSL) database and make it available for future sea level studies. In this study, we will present the GNSS and levelling observations from the KEP Geodetic Observatory for the period from February 2013 to May 2015 used for the calibration of the tide gauge. While it is still too early to obtain accurate vertical land movement estimates from the GNSS data, the levelling campaigns in 2013 and 2014 indicated 7-9 mm of subsidence near the tide gauge. For the computation of the new height datum, geoid undulations derived from a seamless combination of the latest Gravity Observation Combination (GOCO) and Earth Gravitational Model (EGM) 2008 models were used. The use of this combined gravity model introduced a datum shift of approximately -24 cm compared to the previous datum. New Geodetic Infrastructure and Re-Processed GPS Solutions for Sea Level, Climate Change and Geodynamics (GSCG)
format Conference Object
author Teferle, Felix Norman
Hunegnaw, Addisu
Woodworth, P. L.
Foden, Peter R.
Williams, S. D. P.
Pugh, Jeffrey
Hibbert, Angela
author_facet Teferle, Felix Norman
Hunegnaw, Addisu
Woodworth, P. L.
Foden, Peter R.
Williams, S. D. P.
Pugh, Jeffrey
Hibbert, Angela
author_sort Teferle, Felix Norman
title A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
title_short A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
title_full A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
title_fullStr A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
title_full_unstemmed A New Datum-Controlled Tide Gauge Record for Sea Level Studies in the South Atlantic Ocean: King Edward Point, South Georgia Island
title_sort new datum-controlled tide gauge record for sea level studies in the south atlantic ocean: king edward point, south georgia island
publishDate 2015
url https://orbilu.uni.lu/handle/10993/21230
long_lat ENVELOPE(-36.750,-36.750,-54.250,-54.250)
ENVELOPE(-36.496,-36.496,-54.284,-54.284)
geographic Antarctic
The Antarctic
South Georgia Island
King Edward Point
geographic_facet Antarctic
The Antarctic
South Georgia Island
King Edward Point
genre Antarc*
Antarctic
South Atlantic Ocean
South Georgia Island
genre_facet Antarc*
Antarctic
South Atlantic Ocean
South Georgia Island
op_source Global and Regional Sea Level Variability and Change, Palma de Mallorca, Spain [ES], from 10-06-2015 to 12-06-2015
op_relation https://orbilu.uni.lu/handle/10993/21230
info:hdl:10993/21230
_version_ 1813448421427642368