Along‐strike variation and migration of long‐term slow slip events in the western Nankai subduction zone, Japan

R Takagi, N Uchida, K Obara - Journal of Geophysical …, 2019 - Wiley Online Library
We detected 24 long‐term slow slip events (SSEs) in the western Nankai subduction zone,
Japan, from 1996 to 2017 using a newly developed method: grid‐based determination of …

What makes low-frequency earthquakes low frequency

QY Wang, WB Frank, RE Abercrombie, K Obara… - Science …, 2023 - science.org
Low-frequency earthquakes, atypical seismic events distinct from regular earthquakes, occur
downdip of the seismogenic megathrust where an aseismic rheology dominates the …

P and S wave attenuation tomography of the Japan subduction zone

Z Wang, D Zhao, X Liu, C Chen… - Geochemistry, Geophysics …, 2017 - Wiley Online Library
We determine the first high‐resolution P and S wave attenuation (Q) tomography beneath
the entire Japan Islands using a large number of high‐quality data collected from P and S …

Tremor activity inhibited by well-drained conditions above a megathrust

J Nakajima, A Hasegawa - Nature Communications, 2016 - nature.com
Tremor occurs on megathrusts under conditions of near-lithostatic pore-fluid pressures and
extremely weakened shear strengths. Although metamorphic reactions in the slab liberate …

Deciphering the 3-D distribution of fluid along the shallow Hikurangi subduction zone using P- and S-wave attenuation

D Eberhart-Phillips, S Bannister… - Geophysical Journal …, 2017 - academic.oup.com
We use local earthquake velocity spectra to solve for the 3-D distribution of P-and S-wave
attenuation in the shallow Hikurangi subduction zone in the North Island of New Zealand to …

P-wave anisotropy, mantle wedge flow and olivine fabrics beneath Japan

X Liu, D Zhao - Geophysical Journal International, 2017 - academic.oup.com
We present a new 3-D anisotropic P-wave velocity (Vp) model for the crust and upper mantle
of the Japan subduction zone obtained by inverting a large number of high-quality P-wave …

Complexity of deep low‐frequency earthquake activity in Shikoku (Japan) imaged from the analysis of continuous seismic data

N Poiata, JP Vilotte, NM Shapiro… - Journal of …, 2021 - Wiley Online Library
We derive an extensive catalog of low‐frequency earthquakes (LFEs) in western and central
Shikoku applying an automatic, coherency‐based detection and location method to 4‐year …

The Wakayama earthquake swarm in Japan

J Nakajima - Earth, Planets and Space, 2023 - Springer
An earthquake swarm in the Wakayama prefecture, Japan, is known as the most active and
persistent swarm, with> 95,000 earthquakes (M≥–1.3) occurring during the 2003–2020 …

Accretionary wedge, arc magmatism and fluid migration in northern Sumatra: Insight from seismic attenuation tomography

D Liu, Z Wang, D Zhao, H Hu… - Journal of Geophysical …, 2024 - Wiley Online Library
Abstract The first three‐dimensional (3‐D) P and S wave attenuation (Qp and Qs)
tomography of the crust and upper mantle of the northern Sumatra subduction zone is …

Effects of episodic slow slip on seismicity and stress near a subduction-zone megathrust

S Kita, H Houston, S Yabe, S Tanaka, Y Asano… - Nature …, 2021 - nature.com
Slow slip phenomena deep in subduction zones reveal cyclic processes downdip of locked
megathrusts. Here we analyze seismicity within a subducting oceanic slab, spanning~ 50 …