News Finding: The technology can also be used to characterize soil quality, provide information on aquifers, and be integrated into geotechnical studies, he added.
Paper Finding: This study demonstrates the efficacy of near-surface seismic monitoring using DAS-recorded ambient noise.
News Context: We were able to pick up very low frequency waves from distant earthquakes as well as the higher frequencies generated by nearby vehicles," said Ajo-Franklin. The technology can also be used to characterize soil quality, provide information on aquifers, and be integrated into geotechnical studies, he added. With such a detailed picture of the subsurface, the technology has potential for use in time-lapse studies of soil properties, said Rodriguez Tribaldos.
Paper Context: Our results illustrate that for the top 20 meters the V S models that is well constrained by the data, we obtain time-lapse repeatability of about 2% in the model domain-a threshold that is low enough for observing subtle near-surface changes such as water content variations and permafrost alteration. This study demonstrates the efficacy of near-surface seismic monitoring using DAS-recorded ambient noise. As a result, DAS offers new opportunities for seismic monitoring of the near surface.