CRC-SI Project 114: Reconciling Bathymetric Height Datums for Australia

Australian coastal and marine data focuses on reconciling vertical height datums for bathymetry. The report presents a methodology to calculate uncertainty for short-span Mean Sea Level observations relative to a long-term reference epoch. It was produced by Geoscience Australia and last updated in April 2026.

Use Cases

• Improving the joining of bathymetry datasets based on the described methodology for datum reconciliation.
• Creating an ellipsoidal Mean Sea Level surface with uncertainties based on increased MSL observations.
• Defining the intertidal zone about MSL in Australia using alternative high and low water tidal plane options.

Strengths

• Focuses on a specific, documented challenge of datum disparities in Australian coastal data.
• Methodology is presented for calculating uncertainty for Mean Sea Level observations.
• Report is associated with a formal research project (CRC-SI Project 114) and Geoscience Australia.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The description notes that methodologies for computing uncertainties of LAT and HAT tidal planes were not developed.

Provenance

Source

Geoscience Australia Data

Collection Method

Research report from a Co-operative Research Centre for Spatial Information (CRC-SI) project.

Freshness

Last updated 2026-04-20 01:54:03.901452; freshness should be verified.

Geography

Australia