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Application of waveform stacking methods for seismic location at multiple scales

Application of waveform stacking methods for seismic location at multiple scales
Application of waveform stacking methods for seismic location at multiple scales
Seismic source location specifies the spatial and temporal coordinates of seismic sources and lays the foundation for advanced seismic monitoring at all scales. In this work, we firstly introduce the principles of diffraction stacking (DS) and cross-correlation stacking (CCS) for seismic location. The DS method utilizes the travel time from the source to receivers, while the CCS method considers the differential travel time from pairwise receivers to the source. Then, applications with three field datasets ranging from small-scale microseismicity to regional-scale induced seismicity are presented to investigate the feasibility, imaging resolution, and location reliability of the two stacking operators. Both of the two methods can focus the source energy by stacking the waveforms of the selected events. Multiscale examples demonstrate that the imaging resolution is not only determined by the inherent property of the stacking operator but also highly dependent on the acquisition geometry. By comparing to location results from other methods, we show that the location bias is consistent with the scale size, as well as the frequency contents of the seismograms and grid spacing values.
Hydraulic fracturing, Induced seismicity, Microseismic events, Seismic location, Waveform stacking
1996-1073
Li, Lei
26ee89c4-b986-4454-bab1-1155284a9fb8
Xie, Yujiang
77c46c7b-1aa6-4534-bca1-8c6a3dd40705
Tan, Jingqiang
8fd56cdd-77c8-46f2-96a0-43edab272118
Li, Lei
26ee89c4-b986-4454-bab1-1155284a9fb8
Xie, Yujiang
77c46c7b-1aa6-4534-bca1-8c6a3dd40705
Tan, Jingqiang
8fd56cdd-77c8-46f2-96a0-43edab272118

Li, Lei, Xie, Yujiang and Tan, Jingqiang (2020) Application of waveform stacking methods for seismic location at multiple scales. Energies, 13 (18), [4729]. (doi:10.3390/en13184729).

Record type: Article

Abstract

Seismic source location specifies the spatial and temporal coordinates of seismic sources and lays the foundation for advanced seismic monitoring at all scales. In this work, we firstly introduce the principles of diffraction stacking (DS) and cross-correlation stacking (CCS) for seismic location. The DS method utilizes the travel time from the source to receivers, while the CCS method considers the differential travel time from pairwise receivers to the source. Then, applications with three field datasets ranging from small-scale microseismicity to regional-scale induced seismicity are presented to investigate the feasibility, imaging resolution, and location reliability of the two stacking operators. Both of the two methods can focus the source energy by stacking the waveforms of the selected events. Multiscale examples demonstrate that the imaging resolution is not only determined by the inherent property of the stacking operator but also highly dependent on the acquisition geometry. By comparing to location results from other methods, we show that the location bias is consistent with the scale size, as well as the frequency contents of the seismograms and grid spacing values.

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Accepted/In Press date: 12 August 2020
Published date: 11 September 2020
Keywords: Hydraulic fracturing, Induced seismicity, Microseismic events, Seismic location, Waveform stacking

Identifiers

Local EPrints ID: 445137
URI: http://eprints.soton.ac.uk/id/eprint/445137
ISSN: 1996-1073
PURE UUID: 018841bf-4f66-46e4-8b3b-eef6bce6b292

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Date deposited: 23 Nov 2020 17:30
Last modified: 25 Nov 2021 19:38

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Contributors

Author: Lei Li
Author: Yujiang Xie
Author: Jingqiang Tan

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