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Perspective on distributed acoustic sensing for seismic activity monitoring
Continuous, real-time monitoring of surface seismic activity around the globe is of great interest for acquiring new insight in global tomography analyses and for recognition of seismic patterns leading to potentially hazardous situations. The already-existing telecommunication fiber optic network arises as an ideal solution for this application, owing to its ubiquity and the capacity of optical fibers to perform distributed, highly sensitive monitoring of vibrations at relatively low cost (ultra-high density of point sensors available with minimal deployment of new equipment). This perspective article discusses early approaches on the application of fiber-optic distributed acoustic sensors (DAS) for seismic activity monitoring. The benefits and potential impact of DAS technology in this kind of applications are here illustrated with new experimental results on teleseism monitoring based on a specific approach: the so-called chirped-pulse DAS. This technology offers promising prospects for the field of seismic tomography due to its appealing properties in terms of simplicity, consistent sensitivity across sensing channels and robustness. Furthermore, we also report on several signal processing techniques readily applicable to chirped-pulse DAS recordings for extracting relevant seismic information from ambient acoustic noise. The outcome presented here may serve as foundation for a novel conception for ubiquitous seismic monitoring with minimal investment. ; European Commission ; Comunidad de Madrid ; Ministerio de Economía y Competitividad ; Agencia Estatal de Investigación ; Ministerio de Ciencia e Innovación
Perspective on distributed acoustic sensing for seismic activity monitoring
Continuous, real-time monitoring of surface seismic activity around the globe is of great interest for acquiring new insight in global tomography analyses and for recognition of seismic patterns leading to potentially hazardous situations. The already-existing telecommunication fiber optic network arises as an ideal solution for this application, owing to its ubiquity and the capacity of optical fibers to perform distributed, highly sensitive monitoring of vibrations at relatively low cost (ultra-high density of point sensors available with minimal deployment of new equipment). This perspective article discusses early approaches on the application of fiber-optic distributed acoustic sensors (DAS) for seismic activity monitoring. The benefits and potential impact of DAS technology in this kind of applications are here illustrated with new experimental results on teleseism monitoring based on a specific approach: the so-called chirped-pulse DAS. This technology offers promising prospects for the field of seismic tomography due to its appealing properties in terms of simplicity, consistent sensitivity across sensing channels and robustness. Furthermore, we also report on several signal processing techniques readily applicable to chirped-pulse DAS recordings for extracting relevant seismic information from ambient acoustic noise. The outcome presented here may serve as foundation for a novel conception for ubiquitous seismic monitoring with minimal investment. ; European Commission ; Comunidad de Madrid ; Ministerio de Economía y Competitividad ; Agencia Estatal de Investigación ; Ministerio de Ciencia e Innovación
Perspective on distributed acoustic sensing for seismic activity monitoring
Fernández Ruiz, María del Rosario (author) / Soto, Marcelo A. (author) / Williams, Ethan (author) / Martín López, Sonia (author) / Zhan, Zhongwen (author) / González Herráez, Miguel (author) / Fidalgo Martins, Hugo (author) / Universidad de Alcalá. Departamento de Electrónica
2020-03-24
1
Article (Journal)
Electronic Resource
English
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