Search Results - "SATO, HARUO"

SH Wavelet Propagation Through the Random Distribution of Aligned Line Cracks Based on the Radiative Transfer Theory by Sato, Haruo

“…This paper studies the propagation of SH wavelet intensity through the random distribution of aligned line cracks in a two-dimensional (2-D) homogeneous medium…”
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Envelope broadening and scattering attenuation of a scalar wavelet in random media having power-law spectra by Sato, Haruo

“…Peak delay and envelope broadening of an S-wavelet with travel distance increasing are seen in short-period seismograms of small earthquakes. Those phenomena…”
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Power spectra of random heterogeneities in the solid earth by Sato, Haruo

“…Recent seismological observations focusing on the collapse of an impulsive wavelet revealed the existence of small-scale random heterogeneities in the earth…”
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Synthesis of a scalar wavelet intensity propagating through von Kármán-type random media: Radiative transfer theory using the Born and phase-screen approximations by Sato, Haruo, Emoto, Kentaro

“…SUMMARY In high-frequency seismograms of a small earthquake, coda waves continue for a long time and the S-wavelet is broadened as travel distance increases…”
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Statistical characteristics of scattered waves in three-dimensional random media: comparison of the finite difference simulation and statistical methods by Emoto, Kentaro, Sato, Haruo

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Measurements of Thermodynamic Data of Water in Ca-Bentonite by Relative Humidity Method by Kosuke Ichikawa, Haruo Sato

“…Buffer material (compacted bentonite), one of the engineered barrier elements in the geological disposal of a high-level radioactive waste, develops swelling…”
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Changes of Temperature and Moisture Distribution over Time by Thermo-Hydro-Chemical (T-H-C)-Coupled Analysis in Buffer Material Focusing on Montmorillonite Content by Kohei Ouchi, Haruo Sato

“…Bentonite is used as a buffer material in engineered barriers for the geological disposal of high-level radioactive waste. The buffer material will be made of…”
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Swelling Stress of Bentonite: Thermodynamics of Interlayer Water in K-Montmorillonite in Consideration of Alteration by Misato Endo, Haruo Sato

“…The buffer material that makes up the geological disposal system of high-level waste swells by contact with groundwater and seals space with rock mass and…”
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Multiple scattering and mode conversion revealed by an active seismic experiment at Asama volcano, Japan by Yamamoto, Mare, Sato, Haruo

“…Volcanoes are one of the most heterogeneous fields in the Earth's crust, and the understanding of such inhomogeneities may provide us important information on…”
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Retrieval of Green's function having coda waves from the cross-correlation function in a scattering medium illuminated by a randomly homogeneous distribution of noise sources on the basis of the first-order Born approximation by Sato, Haruo

“…The retrieval of Green's function of scalar waves for a given medium is possible from the cross-correlation function (CCF) of noises in the equi-partition…”
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Retrieval of Green's function having coda from the cross-correlation function in a scattering medium illuminated by surrounding noise sources on the basis of the first order Born approximation by Sato, Haruo

“…The peak lag time of the cross-correlation function (CCF) of random noise at two receivers give the wave propagation velocity. This idea has been widely used…”
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Synthesis of vector-wave envelopes in 3-D random media characterized by a nonisotropic Gaussian ACF based on the Markov approximation by Sato, Haruo

“…The earthquake source duration is short; however, the apparent duration time of observed seismogram increases with travel distance. The amplitude excitation is…”
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Synthesis of vector wave envelopes in three-dimensional random elastic media characterized by a Gaussian autocorrelation function based on the Markov approximation: Spherical wave case by Sato, Haruo

“…High‐frequency seismograms of microearthquakes show broadened envelopes with travel distance increasing. Scattered P waves appear in the transverse components…”
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Synthesis of vector wave envelopes in three-dimensional random elastic media characterized by a Gaussian autocorrelation function based on the Markov approximation: Plane wave case by Sato, Haruo

“…High‐frequency seismograms of microearthquakes observed at long travel distances have longer apparent durations than the source durations caused by scattering…”
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Radiative transfer theory for the fractal structure and power-law decay characteristics of short-period seismograms by Sato, Haruo, Fukushima, Rintaro

“…For short period S-wave seismograms of an earthquake, the maximum amplitude decreases according to a power of traveltime, and the coda amplitude also decreases…”
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Tomographic inversion of the peak delay times to reveal random velocity fluctuations in the lithosphere: Method and application to northeastern Japan by Takahashi, Tsutomu, Sato, Haruo, Nishimura, Takeshi, Obara, Kazushige

“…This study proposes a new approach to estimate a 3-D distribution of power spectral density function (PSDF) of random velocity inhomogeneities in the…”
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Envelope synthesis of short-period seismograms in 3-D random media for a point shear dislocation source based on the forward scattering approximation: Application to small strike-slip earthquakes in southwestern Japan by Sawazaki, Kaoru, Sato, Haruo, Nishimura, Takeshi

“…Even though high‐frequency seismograms of local earthquakes are complex because of the excitation of scattered waves caused by random lithospheric…”
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Temporal change in site response caused by earthquake strong motion as revealed from coda spectral ratio measurement by Sawazaki, Kaoru, Sato, Haruo, Nakahara, Hisashi, Nishimura, Takeshi

“…The spectral ratios of coda waves of local earthquakes have been often used as measures of relative amplification factors of different sites. Applying this…”
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Synthesis of vector wave envelopes on the free surface of a random medium for the vertical incidence of a plane wavelet based on the Markov approximation by Emoto, Kentaro, Sato, Haruo, Nishimura, Takeshi

“…In short‐period seismograms of earthquakes, we often observe the broadening of apparent duration of P and/or S waves and the excitation of the transverse…”
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Generalized optical theorems for the reconstruction of Green's function of an inhomogeneous elastic medium by Margerin, Ludovic, Sato, Haruo

“…This paper investigates the reconstruction of elastic Green's function from the cross-correlation of waves excited by random noise in the context of scattering…”
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