Results 21 to 30 of about 3,183 (253)

A combined method for high-speed rail seismic monitoring and early warning

open access: yesGeodesy and Geodynamics, 2017
The ground motion characteristics include the strength, frequency spectrum and duration time. In China, the PGA (peak ground acceleration) is commonly used in determination of whether an earthquake warning is necessary when the high-speed train is on the
Zhigao Chen, Jun Huang
doaj   +1 more source

Correlation of the slope of the initial part of P-wave envelope, hypocenter depth and plate boundary

open access: yesGeodesy and Geodynamics, 2018
We investigated correlation of the slope of the initial part of P-wave envelope, hypocenter depth and plate boundaries by B-Δ method, which is used to determine epicentral distances in the Japan Meteorological Agency and Japan Railway Company earthquake ...
Chao Lian   +3 more
doaj   +1 more source

Discussion on the essence of earthquake early warning

open access: yes地震科学进展, 2022
With the development of the national earthquake intensity quick report and early warning project, more and more “earthquake early warning (EEW)” has come into public view.
Chaojun Zhang   +4 more
doaj   +1 more source

Automatic earthquake confirmation for early warning system [PDF]

open access: yesGeophysical Research Letters, 2015
AbstractEarthquake early warning studies are shifting real‐time seismology in earthquake science. They provide methods to rapidly assess earthquakes to predict damaging ground shaking. Preventing false alarms from these systems is key. Here we developed a simple, robust algorithm, Authorizing GRound shaking for Earthquake Early warning Systems (AGREEs),
Kuyuk, H. S.   +4 more
openaire   +3 more sources

Population response to earthquakes and earthquake early warnings in Mexico

open access: yesInternational Journal of Disaster Risk Reduction, 2021
Human responses to various natural hazards have been studied for more than a few decades. However, the effects of early warning interventions that alert the population to allow them time to take protective actions are not well known, at least to an extent where it could be compared within a socio-culturally similar region under two different scenarios:
Sandra Vaiciulyte   +3 more
openaire   +2 more sources

Electro-Mechanical Impedance (EMI) Based Interlayer Slide Detection Using Piezoceramic Smart Aggregates—A Feasibility Study

open access: yesSensors, 2018
Interlayer slide damage is one of the main causes of landslide hazard, inflicting huge economic losses and casualties. It is urgent to accurately detect the initiation and development of the interlayer slide damage in real time. In this paper, a study on
Jianchao Wu, Weijie Li, Qian Feng
doaj   +1 more source

Loosening Monitoring of the Threaded Pipe Connection Using Time Reversal Technique and Piezoceramic Transducers

open access: yesSensors, 2018
Threaded pipe connections are commonly used in the oil and gas industry in particular to connect casting strings, drill pipe strings, production and transportation risers, and pipelines.
Yabin Liang, Qian Feng, Dongsheng Li
doaj   +1 more source

Damping modification factors for acceleration response spectra

open access: yesGeodesy and Geodynamics, 2017
DMF (Damping modification factors) are used to modify elastic response spectral values corresponding to damping ratio 5% to other damping levels. The influence of seismological parameters (magnitude, epicentral distances and site conditions) on DMF for ...
Heng Li, Feng Chen
doaj   +1 more source

SENTINEL-1 IMAGE MATCHING USING STRONG SCATTERS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The availability of new radar spaceborne sensors offers new interesting potentialities for the geomatics application: spatial and temporal change detection, generation of Digital Elevation Model(DEM) using radargrametry and interferometry.
M. A. Ghannadi   +2 more
doaj   +1 more source

Rapid report of the March 28, 2025 MW 7.9 Myanmar earthquake

open access: yesEarthquake Research Advances
On March 28, 2025, a moment magnitude (MW) 7.9 earthquake struck Myanmar, marking it as the most powerful seismic event of the year. The earthquake occurred along the Sagaing Fault, a prominent right-lateral strike-slip fault and the most significant ...
Jing Cai   +4 more
doaj   +1 more source

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