Oral Presentation Sub22 Conference

Towards building a baseline seismic catalogue for the Canning Basin (#7)

Mehdi Dr Tork Qashqai 1 , Erdinc Dr Saygin 1 , Ruth Dr Murdie 2
  1. Deep Earth Imaging Future Science Platform, CSIRO, Kensington, WA, Australia
  2. Geological Survey of Western Australia, Perth, WA, Australia

One of Australia's largest onshore sedimentary basins is the Canning Basin northwest of Western Australia. The geology and structure of the basin have been the focus of numerous studies. However, the natural seismicity of the area is poorly understood due to the sparsely located seismic monitoring stations. The nature of its long-term seismicity is due to NNE-SSW-oriented present-day crustal stresses in the region. Currently, earthquakes with magnitudes less than 2.5 are either unreported or undetected in the region. To fully understand the nature of the seismicity of the region and monitoring its rate, a baseline catalogue with earthquake magnitudes of 1.5 or less is required. Recently, the Geological Survey of Western Australia (GSWA), in collaboration with Geoscience Australia and CSIRO, has started a project to establish this baseline seismic monitoring capability with support from Gas Industry Social and Environmental Research Alliance (GISERA). GSWA has installed 12 new seismic stations that are operational in real-time. The ultimate goal is to establish an automated near real-time continuous earthquake detection and location workflow to build a baseline seismicity catalogue, with significant advances in machine learning-based earthquake detection algorithms. In this presentation, we will show preliminary results of detected and located earthquakes in the region.

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  • Acknowledgements: