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Study on Quick Similarity Search in Massive-size Waveform Databases

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Diversity of deep earthquakes with waveform similarity

Physics of the Earth and Planetary Interiors, 2021
Abstract The generation mechanism of deep earthquakes in subducting slabs remains enigmatic. We analyze deep earthquakes at depths of 200-500 km in the Pacific Plate beneath central Japan, then identify five groups of 11 similar earthquakes whose waveforms are similar at five or more stations over a 40 s time window that includes the P and S arrivals.
Ayako Tsuchiyama, Junichi Nakajima
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Assessment of waveform similarity in youth long-distance runners

Gait & Posture, 2020
Although unimpaired gait is typically assumed to be symmetrical, side-to-side differences in discrete instances of time have been reported in adult and youth runners. These previous results fail to account for the entirety of the motion.Are waveform pattern similarities strong in youth long-distance runners and are the waveform pattern similarities ...
Micah C, Garcia   +3 more
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Waveform similarity analysis at Cotton Valley, Texas

SEG Technical Program Expanded Abstracts 2011, 2011
To analyze similarity of microseismic events independently from their locations we introduce two new measures, a composite Correlation Measure (CM) and a composite Time Measure (TM), which are based on waveforms and arrival times, only. To create a robust data base to test those measures, we study the quality of seismic traces and apply a simple step ...
Karsten Stuermer   +2 more
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A Waveform Similarity Approach to Investigate Seismicity Patterns

Natural Hazards, 1999
the temporal and spatial evolution of seismicity, a simple cross-correlation technique was applied to a waveform data set of western Alps earthquakes. A selection of events recorded by a reference station of the regional seismic network of North-Western Italy (IGG network) within a particular S-P range was used.
CATTANEO M   +3 more
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Earthquake relative location based on waveform similarity

Tectonophysics, 1994
Abstract Knowledge of the precise location of aftershocks is a tool used to obtain a detailed image of the geometry of some characteristics of focal regions. In the case of sparse arrays of stations, the use of secondary phases such as S waves may provide strong constraints on the spatial coordinates of the solutions.
J. Mezcua, J. Rueda
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