Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12

<div>Stabilization diagram for ambient vibration record of 2013. Identified frequencies based on average power spectrum ratios and recursive subspace identification methods N4SID and MOESP. The nonrecursive N4SID method is added for comparison purpose.</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Monitoring and Identification of Vibration Frequencies on a Portion of México City Metro Line 12 