Poster #083, Seismology
Monitoring the changing site response of the Mexico City basin
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Poster Presentation
2020 SCEC Annual Meeting, Poster #083, SCEC Contribution #10594 VIEW PDF
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To measure velocity changes, we rely on urban noise correlations. We utilize continuous seismic recordings from temporary and permanent broadband seismic stations, as well as a continuously recording accelerometer, to create a baseline of observed changes in seismic properties.
Due to the variability and inhomogeneous spatial distribution of the urban seismic noise sources, we extract repetitive signals in the correlations using clustering. Measurements allows us to observe both seasonal and long-term trends in ground response.
Based on the results from continuous data, we further evaluate the possibility of using auto-correlations of regional earthquakes recorded on triggered accelerometers for supplementing the monitoring of seismic properties.
Recent unconventional instrumentation, such as RaspberryShake citizen science stations and low-cost MEMS accelerometers, may hold additional potential for monitoring the evolution of seismic response and site effects. We explore the usage of both types of sensors through the evaluation of urban noise and regional earthquakes. If successful, such sensors could greatly improve the spatial density of the observation of basin response and seismic hazard characteristics.
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Due to the variability and inhomogeneous spatial distribution of the urban seismic noise sources, we extract repetitive signals in the correlations using clustering. Measurements allows us to observe both seasonal and long-term trends in ground response.
Based on the results from continuous data, we further evaluate the possibility of using auto-correlations of regional earthquakes recorded on triggered accelerometers for supplementing the monitoring of seismic properties.
Recent unconventional instrumentation, such as RaspberryShake citizen science stations and low-cost MEMS accelerometers, may hold additional potential for monitoring the evolution of seismic response and site effects. We explore the usage of both types of sensors through the evaluation of urban noise and regional earthquakes. If successful, such sensors could greatly improve the spatial density of the observation of basin response and seismic hazard characteristics.
SHOW MORE