Offshore ground motion characteristics on the horizontal PGA, spectral acceleration, frequency content and significant duration from the 2021 Mw 7.1 and 2022 Mw 7.4 …

J Tan, J Hu - Soil Dynamics and Earthquake Engineering, 2023 - Elsevier
The two large offshore earthquakes that occurred in Japan's eastern Fukushima region on
February 13, 2021, Mw 7.1 and March 17, 2022, Mw 7.4 are the two largest offshore …

Estimation of source, path, and site factors of S waves recorded at the S-net sites in the Japan Trench area using the spectral inversion technique

YP Dhakal, T Kunugi, H Yamanaka, A Wakai… - Earth, Planets and …, 2023 - Springer
S-net is a large-scale ocean bottom (OB) network in the Japan Trench area, consisting of
inline-type 150 observatories equipped with seismometers and pressure gauges. Among …

Offshore ground motion models for arias intensity and cumulative absolute velocity in the Japan trench area

J Hu, L Hu, C Jin, Z Wang, Y Ding… - Journal of Earthquake …, 2023 - Taylor & Francis
This study proposes offshore ground motion models (GMMs) for Arias intensity and
cumulative absolute velocity by using the seafloor ground motion database in the Japan …

Scattering of seismic waves by reef sites in saturated layered sea areas-simulated using the indirect boundary element method

L Huang, X Liu, Z Liu, T Ai - Soil Dynamics and Earthquake Engineering, 2024 - Elsevier
Analysing the dynamic seismic responses of reef island sites is necessary for the
development and utilisation of marine resources. In this study, an overall response model for …

An offshore non-ergodic ground motion model for subduction earthquakes in Japan Trench area

L Hu, Y Li, S Ji - Earthquake Spectra, 2024 - journals.sagepub.com
With the improvement of the world's largest seafloor observation network (S-net) and the
increase in the quantity and quality of records, the ergodic assumptions can be further …

Improving the Constraint on the Mw 7.1 2016 Off‐Fukushima Shallow Normal‐Faulting Earthquake With the High Azimuthal Coverage Tsunami Data From the S‐Net …

T Kubota, H Kubo, K Yoshida… - Journal of …, 2021 - Wiley Online Library
Tsunamis with amplitudes of up to 40 cm, related to the Mw 7.1 normal‐faulting earthquake
off Fukushima, Japan, on November 21, 2016, were clearly recorded by a new offshore wide …

Empirical Frequency Content Models for Offshore Ground Motions in the Japan Trench Area

J Hu, X Cui, J Tan - Journal of Earthquake Engineering, 2024 - Taylor & Francis
This paper presents empirical models for the frequency content parameters of offshore
ground motions in the Japan Trench area based on the S-net dataset, comprising 6,436 …

Deep-sea bottom-water environment change caused by sediment resuspension on the continental slope off Sanriku, Japan, before and after the 2011 Tohoku …

M Wakita, S Watanabe, J Yoshino, K Oguri… - Progress in Earth and …, 2022 - Springer
The 2011 off the Pacific coast of Tohoku Earthquake occurred off southern Sanriku, Japan,
on March 11 and generated strong shaking and huge tsunami along the entire eastern coast …

Preliminary analysis of nonlinear site response at the S-net seafloor sites during three Mw 7 class earthquakes

YP Dhakal, T Kunugi - Frontiers in Earth Science, 2023 - frontiersin.org
In this paper, we investigated the characteristics of nonlinear site response (NLSR) at 23 S-
net seafloor sites using strong-motion records obtained during three Mw 7 class …

Empirical correlations of acceleration response spectra with other four categories of intensity measures for offshore ground motions

H Tian, JJ Hu, HB Liu, LJ Xu - Marine Structures, 2024 - Elsevier
The empirical correlation equation is developed to predict the correlation between two
intensity measures (IMs). Previous studies on empirical correlation equations have primarily …