Arrival times by Recurrent Neural Network for induced seismic events from a permanent network

0574165 - GFÚ 2024 RIV CH eng J - Journal Article
Kolář, Petr - Waheed, U. B. - Eisner, L. - Matoušek, P.
Arrival times by Recurrent Neural Network for induced seismic events from a permanent network.
Frontiers in Big Data. Roč. 6, August (2023), č. článku 1174478. E-ISSN 2624-909X
Institutional support: RVO:67985530
Keywords : Recurrent Neural Network * automatic arrival time detection * location * magnitude * hydraulic fracturing * induced seismicity * traffic light system
OECD category: Volcanology
Impact factor: 3.1, year: 2022
Method of publishing: Open access
https://www.frontiersin.org/articles/10.3389/fdata.2023.1174478/full

We have developed a Recurrent Neural Network (RNN)-based phase picker for data obtained from a local seismic monitoring array specifically designated for induced seismicity analysis. The proposed algorithm was rigorously tested using real-world data from a network encompassing nine three-component stations. The algorithm is designed for multiple monitoring of repeated injection within the permanent array. For such an array, the RNN is initially trained on a foundational dataset, enabling the trained algorithm to accurately identify other induced events even if they occur in different regions of the array. Our RNN-based phase picker achieved an accuracy exceeding 80% for arrival time picking when compared to precise manual picking techniques. However, the event locations (based on the arrival picking) had to be further constrained to avoid false arrival picks. By utilizing these refined arrival times, we were able to locate seismic events and assess their magnitudes. The magnitudes of events processed automatically exhibited a discrepancy of up to 0.3 when juxtaposed with those derived from manual processing. Importantly, the efficacy of our results remains consistent irrespective of the specific training dataset employed, provided that the dataset originates from within the network.
Permanent Link: https://hdl.handle.net/11104/0344502