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
N1 - Funding Information:
We are grateful to the Japan Meteorological Agency (JMA) for pro viding us with continuous seismic data. We also used seismograms obtained from the active seismic experiments conducted by the Disaster Prevention Research Institute, Kyoto University, along with eight other Japanese uni versities, and the JMA at Sakurajima that were lead by Tomoki Tsutsui and Masato Iguchi. We downloaded these data from the Data Management Center of the National Research Institute for Earth Science and Disaster Resilience (http://www.hinet.bosai.go.jp). We thank an Editor, Jeroen Ritsema, and Daniel Bowden and an anonymous reviewer for constructive comments. T. H. was partially supported by the International Joint Graduate Program in Earth and Environmental Science (GP‐EES) of Tohoku University and the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant 18J10232. Further support was received from JSPS KAKENHI Grant JP6K05528 and also by Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan under its Earthquake and Volcano Hazards Observation and Research Program.
Publisher Copyright:
©2019. American Geophysical Union. All Rights Reserved.
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 -