TY - JOUR
T1 - A Passive Estimation Method of Scattering and Intrinsic Absorption Parameters From Envelopes of Seismic Ambient Noise Cross-Correlation Functions
AU - Hirose, Takashi
AU - Nakahara, Hisashi
AU - Nishimura, Takeshi
PY - 2019/4/16
Y1 - 2019/4/16
N2 - We present a passive method to estimate the scattering and intrinsic absorption parameters of Rayleigh waves. Envelopes of seismic ambient noise cross-correlation functions are calculated using the temporal flattening technique, and these parameters are estimated by modeling their space-time distributions using radiative transfer theory. The scattering mean free paths are estimated to be 1.6–2.4 km at 0.5–1 Hz, 1.6–2.0 km at 1–2 Hz, and 1.6–3.2 km at 2–4 Hz at the Sakurajima volcano, Japan. Intrinsic absorption parameters are 0.04–0.06 s−1 at 0.5–1 Hz, 0.08–0.09 s−1 at 1–2 Hz, and 0.16–0.18 s−1 at 2–4 Hz. We validate these values by conducting a comparative study using active shot records at Sakurajima. Our passive method provides an effective way to measure scattering and intrinsic absorption parameters in various regions.
AB - We present a passive method to estimate the scattering and intrinsic absorption parameters of Rayleigh waves. Envelopes of seismic ambient noise cross-correlation functions are calculated using the temporal flattening technique, and these parameters are estimated by modeling their space-time distributions using radiative transfer theory. The scattering mean free paths are estimated to be 1.6–2.4 km at 0.5–1 Hz, 1.6–2.0 km at 1–2 Hz, and 1.6–3.2 km at 2–4 Hz at the Sakurajima volcano, Japan. Intrinsic absorption parameters are 0.04–0.06 s−1 at 0.5–1 Hz, 0.08–0.09 s−1 at 1–2 Hz, and 0.16–0.18 s−1 at 2–4 Hz. We validate these values by conducting a comparative study using active shot records at Sakurajima. Our passive method provides an effective way to measure scattering and intrinsic absorption parameters in various regions.
KW - intrinsic absorption parameter
KW - scattering mean-free path
KW - seismic interferometry
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U2 - 10.1029/2018GL080553
DO - 10.1029/2018GL080553
M3 - Article
AN - SCOPUS:85063731468
VL - 46
SP - 3634
EP - 3642
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 7
ER -