From Geoscience Australia
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Spiral Arm Seismic Arrays

Created 17/10/2025

Updated 17/10/2025

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Seismic arrays have many uses for signal enhancement, from surface wave characterisation of the near surface to teleseismic detection in the context of monitoring nuclear tests. Many variants of the geometrical configuration of stations have been used with the object of maximising potential resolution of the direction of arrival of incoming wavefronts. A versatile class of array configurations, with good resolution properties, can be constructed with multiple spiral arms. The array response is comparable to the samenumber of full circles but with far fewer stations, and robust to minor position changes in emplacement. The desirable properties of the spiral arm arrays are illustrated for a permanent array in the Precambrian Pilbara craton in northwestern Australia, and a temporary array on ancient sediments in southern Queensland, Australia. In each case the practical array response is very good and matches the theoretical expectations. The spiral arm configuration allows the deployment of relatively large aperture arrays with a limited number of stations, which is advantageous in a broad range of seismic applications including near-surface characterisation.

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Additional Info

Field Value
Title Spiral Arm Seismic Arrays
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/cfc9e73e-8a50-4063-aa97-5ed3bce50faa
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Spiral Arm Seismic Arrays". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/spiral-arm-seismic-arrays