Results 11 to 20 of about 10,693,998 (197)

Evaluation of MCC seismic response according to the frequency contents through the shake table test

open access: yesNuclear Engineering and Technology, 2021
Damage to nuclear power plants causes human casualties and environmental disasters. There are electrical facilities that control safety-related devices in nuclear power plants, and seismic performance is required for them.
Sung-Jin Chang   +4 more
doaj   +1 more source

Low-frequency earthquakes along the Ryukyu Islands triggered by teleseismic earthquakes

open access: yesEarth, Planets and Space, 2021
Tremors and low-frequency earthquakes (LFEs), which occur in the plate interface, can provide useful information about the state of aseismic stress transfer in mega-earthquake fault zones.
Ayumi Kinjo, Mamoru Nakamura
doaj   +1 more source

The advantage of the nonlinear mixed model and its application in typical seismically active areas in China

open access: yesDizhi lixue xuebao, 2023
As an essential parameter in earthquake prediction and risk assessment research, the b-value has received extensive attention and discussion. In this study, we chose a nonlinear mixed model to fit the earthquake magnitude-frequency distribution to the ...
ZHOU Hanyang, DU Jianjun, ZHANG Shuting
doaj   +1 more source

Time-Frequency Analysis of Systems with Changing Dynamic Properties [PDF]

open access: yes, 2006
The Wigner-Ville Distribution, and related refinements, represent a class of advanced time-frequency analysis tools that are distinguished from Fourier and wavelet methods by an increase in resolution in the time frequency plane. Time-frequency analysis
Bradford, Samuel Case, V   +1 more
core   +1 more source

Distribution of low-frequency earthquakes accompanying the very low frequency earthquakes along the Ryukyu Trench

open access: yesEarth, Planets and Space, 2017
This study investigated the activity and distribution of low-frequency earthquakes (LFEs) accompanying the very low frequency earthquakes (VLFEs) in the central and southern Ryukyu Trench.
Mamoru Nakamura
doaj   +1 more source

Damping System Designs using Nonlinear Frequency Analysis Approach [PDF]

open access: yes, 2012
The main purpose of this thesis focuses on the investigation of the frequency domain analysis and design approaches for nonlinear damping systems. With the development of modern mechanical and civil engineering structures, the vibration control has ...
Guo, Pengfei
core   +6 more sources

Dynamic analysis of shear building structure using wavelet transform [PDF]

open access: yesNumerical Methods in Civil Engineering, 2018
Dynamic analysis of shear building structures (SBS) is achieved using fast wavelet transform (FWT). The loads are considered as acceleration of earthquake record. for the analysis, A time history dynamic analysis is carried out.
A. Heidari   +2 more
doaj   +1 more source

Entropy, energy, and proximity to criticality in global earthquake populations [PDF]

open access: yes, 2002
We examine the question of proximity of the global earthquake population to the critical point characterised by the energy E and entropy S based on annual frequency data from the Harvard CMT catalogue.
Main, Ian G.; id_orcid   +1 more
core   +1 more source

Thermal Monitoring of the Lithosphere by the Interaction of Deep Low-Frequency and Ordinary High-Frequency Earthquakes in Northeastern Japan

open access: yesEnergies, 2021
Deep low-frequency earthquakes (LFEs) are known to occur in dehydration phenomena from the subducting hydrous slab and in magmatic phenomena beneath Quaternary volcanoes in Japan.
Yota Suzuki   +2 more
doaj   +1 more source

Earthquake Source Characterization Using 3D Numerical Modeling [PDF]

open access: yes, 2007
To understand the physics of earthquakes, it is important to know what happens during individual events. Dissembling the information about the source process from the recorded seismograms is a difficult and non-unique process, as there are severe trade ...
Hjörleifsdóttir, Vala
core   +1 more source

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