AusArray Ambient Noise Tomography Data for Subsurface Imaging in Northern Australia

An automated workflow for ambient noise tomography uses an empirical zero-distance law (EZDL) and a well-placed zero ratio (WZR) quality control metric. The method was demonstrated on data from the AusArray seismic deployment in Australia's Northern Territory. The research was presented at the 2025 IAGA/IASPEI Joint Scientific Meeting.

Use Cases

• Automating surface wave dispersion curve extraction based on the described empirical zero-distance law (EZDL).
• Improving quality control in ambient noise tomography using the proposed well-placed zero ratio (WZR) metric.
• Imaging Earth's subsurface at various scales based on ambient noise correlation functions.
• Enhancing data processing for large-scale seismic arrays like AusArray based on the described automated workflow.

Strengths

• Describes a novel automated workflow for handling missing or extra zeros in dispersion spectra.
• Introduces a new quality control metric (WZR) reported to outperform traditional signal-to-noise ratio.
• Method was applied to the real-world AusArray deployment in Northern Territory, Australia.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary data format listed is PDF, which may not contain the raw, machine-readable data.

Provenance

Source

Geoscience Australia Data

Collection Method

Ambient noise tomography applied to seismic data from the AusArray deployment.

Freshness

Last updated 2026-06-24 08:12:06.582809; freshness should be verified.

Geography

Northern Territory, Australia