Tonga Levelling Survey Report - 2008

Created 17/10/2025

Updated 17/10/2025

This report outlines the level survey completed during the visit to Nuku'alofa, Tonga October 2008. This is the third EDM Height Traversing levelling survey of the deep bench mark array in Nuku'alofa, the Republic of Tonga. This is a repeat survey. On eight previous occasions, from January 1993 to June 2003 the Tonga level survey was performed by the National Tidal Centre (NTC) using the Precise Differential Levelling technique. This project is sponsored by the Australian Agency for International Development (AusAID), managed by the Bureau of Meteorology (BOM) and supported by the National Geospatial Reference Systems Project (NGRS), Geospatial Earth Monitoring Division, GEOSCIENCE AUSTRALIA.

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Additional Info

Field Value
Title Tonga Levelling Survey Report - 2008
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/bf8f079a-6f51-4044-a13c-34d4f097ff43
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        -3.0,
        -22.5
      ],
      [
        -8.0,
        -22.5
      ],
      [
        -8.0,
        -17.5
      ],
      [
        -3.0,
        -17.5
      ],
      [
        -3.0,
        -22.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Tonga Levelling Survey Report - 2008". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/tonga-levelling-survey-report-2008