From Geoscience Australia
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

A teleseismic travel time residual map of the Australian continent

Created 16/10/2025

Updated 16/10/2025

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Teleseismic travel time residuals for 43 seismic observatories and 6 networks of portable seismographs have been combined to produce a contour map of residuals for the Australian continent. Travel times to the shield regions of central and western Australia are low compared with average global travel times, indicating relatively high velocities in the upper mantle. The lowest times occur in the Archaean shield regions of Western Australia, the Proterozoic terranes in central Australia and the Gawler Block in South Australia, where heat flow is generally below world average. The residuals become progressively higher (arrival times later) towards the southeast, and the largest residuals are in Tasmania. The positive residuals indicate low velocities in the upper mantle, consistent with the predicted low velocity layer in the upper mantle under southeastern Australia, and higher observed heat flow.

Files and APIs

Tags

Additional Info

Field Value
Title A teleseismic travel time residual map of the Australian continent
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/45310083-c615-46cd-910d-dfadb7190514
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "A teleseismic travel time residual map of the Australian continent". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/a-teleseismic-travel-time-residual-map-of-the-australian-continent