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Nobuyasu Hirabayashi
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Journal Article

Beamform processing for sonic imaging using monopole and dipole sources

Nobuyasu Hirabayashi
Published: 16 December 2020
Geophysics (2021) 86 (1): D1–D14.
DOI: https://doi.org/10.1190/geo2020-0235.1
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Wavefield separation for borehole acoustic reflection survey using parametric decomposition and waveform inversion

Nobuyasu Hirabayashi, W. Scott Leaney
Published: 27 May 2019
Geophysics (2019) 84 (4): D151–D159.
DOI: https://doi.org/10.1190/geo2018-0330.1
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Characteristics of waveforms recorded by azimuthally spaced hydrophones of sonic logging tool for incident plane waves

Nobuyasu Hirabayashi, Naoki Sakiyama, Toru Ikegami
Published: 25 September 2017
Geophysics (2017) 82 (6): D353–D368.
DOI: https://doi.org/10.1190/geo2017-0201.1
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Reflector imaging using trial reflector and crosscorrelation: Application to fracture imaging for sonic data

Nobuyasu Hirabayashi
Published: 13 September 2016
Geophysics (2016) 81 (6): S433–S446.
DOI: https://doi.org/10.1190/geo2016-0046.1
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Real-time event location using model-based estimation of arrival times and back azimuths of seismic phases

Nobuyasu Hirabayashi
Published: 26 February 2016
Geophysics (2016) 81 (2): KS25–KS40.
DOI: https://doi.org/10.1190/geo2014-0357.1
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