Seismology

We imaged the slab and crustal structure of the Kii Peninsula in SW Japan using a receiver-function-like analysis. Positive impedance contrasts in the forearc crust correspond to the top surface or inside Kumano pluton, which may control fluid conditions around slow-earthquake sources.

Check it out below!

• Sawaki, Y., Y. Ito, E. S. M. Garcia, A. Miyakawa, and T. Shibutani (2024). Deep plutonic bodies over low-frequency earthquakes revealed from receiver-side Green’s functions. Tectonophysics, 892, 230536. doi: 10.1016/j.tecto.2024.230536 (Open Access)

We have a new preprint on the seismic structure beneath the Kii Peninsula, southwestern Japan, available on SSRN. While it’s not yet peer-reviewed, feel free to check it out if you’re interested!

Sawaki, Y., Y. Ito, E. S. M. Garcia, A. Miyakawa, and T. Shibutani. Deep Plutonic Bodies Over Low-Frequency Earthquakes Revealed from Receiver-Side Green’s Functions. Available at SSRN: http://dx.doi.org/10.2139/ssrn.4793654

Our new paper is publishded! We analyzed shear wave splitting from receiver functions in Shikoku Island, SW Japan, and along-dip variation of fast axes is clarified. Check it out!

Ruan, Yihuan, Yoshihiro Ito, and Yasunori Sawaki, (2023). Anisotropic Velocity Structure Beneath Shikoku, Japan: Insights From Receiver Function and Shear Wave Splitting Analyses Journal of Geophysical Research: Solid Earth, 128, e2023JB027178. doi: 10.1029/2023JB027178