Seismic data augmentation based on conditional generative adversarial networks

Yuanming Li, Bonhwa Ku, Shou Zhang, Jae Kwang Ahn, Hanseok Ko

Research output: Contribution to journalLetterpeer-review

Abstract

Realistic synthetic data can be useful for data augmentation when training deep learning models to improve seismological detection and classification performance. In recent years, various deep learning techniques have been successfully applied in modern seismology. Due to the performance of deep learning depends on a sufficient volume of data, the data augmentation technique as a data-space solution is widely utilized. In this paper, we propose a Generative Adversarial Networks (GANs) based model that uses conditional knowledge to generate high-quality seismic waveforms. Unlike the existing method of generating samples directly from noise, the proposed method generates synthetic samples based on the statistical characteristics of real seismic waveforms in embedding space. Moreover, a content loss is added to relate high-level features extracted by a pre-trained model to the objective function to enhance the quality of the synthetic data. The classification accuracy is increased from 96.84% to 97.92% after mixing a certain amount of synthetic seismic waveforms, and results of the quality of seismic characteristics derived from the representative experiment show that the proposed model provides an effective structure for generating high-quality synthetic seismic waveforms. Thus, the proposed model is experimentally validated as a promising approach to realistic high-quality seismic waveform data augmentation.

Original languageEnglish
Article number6850
Pages (from-to)1-13
Number of pages13
JournalSensors (Switzerland)
Volume20
Issue number23
DOIs
Publication statusPublished - 2020 Dec 1

Keywords

  • Data augmentation
  • Generative adversarial networks
  • Seismic waveforms

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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