Dynamic Influence of Near-Source Seismic Ground Motion on Underground Mine Working Stability Using Time-Frequency Analysis by Adam Lurka, Grzegorz Mutke, Piotr Małkowski

“…Assuming a constant peak particle velocity amplitude on the analyzed seismograms, the duration time of each frequency group starts to play a key role. …”
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"The / profile of a city / exploding": Frank O’Hara’s Aesthetics of Shock by Olivier Brossard

“…Au contraire, l’animation parfois violente de la ville est vitale pour O’Hara : de kaléidoscope à sismographe, le "je" des poèmes se fait porteur, pour son bonheur, des chocs urbains. …”
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Imaging Shallow Velocity Structure of an Inactive Fault by Airgun Seismic Source: A Case Study of Xiliushui Fault in Qiliang Mountain by Manzhong Qin, Baichen Wu, Yi Wang, Xueyi Shang, Yuansheng Zhang, Xuzhou Liu, Xiao Guo, Rui Zou, Yahong Wang, Dianfeng Sun

“…Based on the flexible and precise spectral element method, we computed broadband synthetic seismograms for a shallow low-velocity fault zone (FZ) to model the direct P-wave travel time delay and incident angle of the wavefield near the FZ. …”
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Environmental vulnerability characteristics in an active swarm region by A.V.H. Simanjuntak, U Muksin, A. Arifullah, K. Lythgoe, Y. Asnawi, M. Sinambela, S. Rizal, S. Wei

“…Then, the values of the horizontal-to-vertical ratios were obtained by comparing the average values of the horizontal and vertical components.FINDING: The microtremor study showed a more complete spectrum waveform from the low-to-high frequency of a non swarm earthquake, while the swarm earthquakes generated high-frequency seismograms. From the combination values of natural site frequencies and the horizontal-to-vertical ratios, the Toba environment can be classified into five clusters: I) Samosir–Hasinggaan, II) Samosir–Parapat, III) Silimapuluh, IV) Balige–Paropo, and V) Panjaitan. …”
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