SEDENOSS: SEparating and DENOising Seismic Signals with dual-path
recurrent neural network architecture
Abstract
Seismologists have to deal with overlapping and noisy signals.
Techniques such as source separation can be used to solve this problem.
Over the past few decades, signal processing techniques used for source
separation have advanced significantly for multi-station settings. But
not so many options are available when it comes to single-station data.
Using Machine Learning, we demonstrate the possibility of separating
sources for single-station, one-component seismic recordings. The
technique that we use for seismic signal separation is based on a
dual-path recurrent neural network which is applied directly to the time
domain data. Such source separation may find applications in most tasks
of seismology, including earthquake analysis, aftershocks, nuclear
verification, seismo-acoustics, and ambient-noise tomography. We train
the network on seismic data from STanford EArthquake Dataset (STEAD) and
demonstrate that our approach is a) capable of denoising seismic data
and b) capable of separating two earthquake signals from one another. In
this work, we show that Machine Learning is useful for
earthquake-induced source separation. We provide a reproducible research
repository with the algorithms here:
https://github.com/IMGW-univie/source-separation.