Results 21 to 30 of about 1,427 (180)
The Seismic Record, 2023 High‐resolution passive seismic imaging of shallow subsurface structures is often challenged by the scarcity of coherent body‐wave energy in ambient noise recorded at surface stations.
Deepankar Dangwal +3 more
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Attenuation of coda waves in Western Anatolia
Physics of the Earth and Planetary Interiors, 1994 Abstract By analyzing the decay of coda wave amplitude, we have determined coda Q,Qc, in Western Anatolia (Turkey). Using the single isotropic scattering model, we analyzed 116 earthquakes which registered at the Gebze station by using five narrow frequency bands centered at 1.5, 3, 6, 8 and 10 Hz.
AKINCI, A, TAKTAK, AG, ERGINTAV, S
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Observations of teleseismicP wave coda for underground explosions [PDF]
pure and applied geophysics, 1988 The earlyP wave coda (5–15 sec after the first arrival) of underground explosions at the Nevada Test Site is studied in the time domain using 2082 teleseismic short-period recordings, with the intent of identifying near-source contributions to the signals in the frequency range 0.2–2.0 Hz.
Lynnes, Christopher S., Lay, Thorne
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Earth, Planets and Space, 2017 We have analyzed the spatial variation in coda Q in the northeastern part of a high strain rate zone, the Niigata–Kobe Tectonic Zone (NKTZ), to investigate the cause of the high strain rate by correlating coda Q with the differential strain rate and the ...
Masanobu Dojo, Yoshihiro Hiramatsu
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Review of progress in seismic attenuation tomography
地球与行星物理论评, 2022 Global and regional seismic attenuation models reveal anelastic heterogeneous structures in the earth, which shed new light on the temperature, melt and volatile fraction of Earth's interior, as well as the geodynamic processes and source focal ...
Andy Dai +3 more
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Earthquake‐volcano interaction imaged by coda wave interferometry [PDF]
Geophysical Research Letters, 2012 Large earthquakes are often assumed to influence the eruptive activity of volcanoes. A major challenge to better understand the causal relationship between these phenomena is to detect and image, in detail, all induced changes, including subtle, non‐eruptive responses.
Battaglia, Jean +2 more
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Source Separation and Medium Change of Contained Chemical Explosions from Coda Wave Interferometry
The Seismic Record, 2021 Differences in the seismic coda of neighboring events can be used to investigate source location offsets and medium change with coda wave interferometry (CWI).
Sean R. Ford, William R. Walter
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Coda waves’ tomography for surficial exploration
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2015 This work extrapolates the application of coda-waves’ imaging, in order to determine lateral anomalies of attenuation for surficial targets, and providing experimental elements that justify its use in an economic way with a relatively good resolution.
Carlos Alberto Vargas Jimenez +2 more
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Continuous isolated noise sources induce repeating waves in the coda of ambient noise correlations
Seismica, 2023 Continuous excitation of isolated noise sources leads to repeating wave arrivals in cross correlations of ambient seismic noise, including throughout their coda. These waves propagate from the isolated sources.
Sven Schippkus +2 more
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Precursory changes in wave velocity for coal and rock samples under cyclic loading
Results in Physics, 2019 Elastic wave velocity is a critical parameter in evaluating rock stability and integrity. Temporal changes in wave velocity during mine dynamic hazards including rockburst and gas outburst might potentially illuminate physical processes associated with ...
Haishan Jia +4 more
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