PyAWD: A Library for Generating Large Synthetic Datasets of Acoustic Wave Propagation

TL;DR

PyAWD is a Python library that generates large, high-resolution synthetic seismic datasets simulating acoustic wave propagation in complex media, facilitating machine learning applications in earthquake analysis.

Contribution

The paper introduces PyAWD, a novel tool for creating customizable, large-scale synthetic seismic datasets to support ML research in seismology.

Findings

PyAWD successfully generates realistic seismic datasets.

The library aids in epicenter retrieval tasks.

It helps optimize data collection strategies.

Abstract

Seismic data is often sparse and unevenly distributed due to the high costs and logistical challenges associated with deploying physical seismometers, limiting the application of Machine Learning (ML) in earthquake analysis. While simulation methods exist, no tool allows the generation of large datasets containing simulated measurements of the ground motion. To address this gap, we introduce PyAWD, a Python library designed to generate high-resolution synthetic datasets simulating spatio-temporal acoustic wave propagation in both two-dimensional and three-dimensional heterogeneous media. By allowing fine control over parameters such as the wave speed, external forces, spatial and temporal discretization, and media composition, PyAWD enables the creation of ML-scale datasets that capture the complexity of seismic wave behavior. We illustrate the library's potential with an epicenter retrieval task, showcasing its suitability for designing complex, accurate seismic problems that require advanced ML approaches in the absence or lack of dense real-world data. We also show the usefulness of our tool to tackle the problem of data budgeting in the framework of epicenter retrieval.