A Passive Estimation Method of Scattering and Intrinsic Absorption Parameters From Envelopes of Seismic Ambient Noise Cross-Correlation Functions

研究成果: Article査読

14 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)3634-3642
ページ数9
ジャーナルGeophysical Research Letters
46
7
DOI
出版ステータスPublished - 2019 4月 16

ASJC Scopus subject areas

  • 地球物理学
  • 地球惑星科学(全般)

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