Results 31 to 40 of about 3,183 (253)
Geodesy and Geodynamics, 2018 By systemic processing, comprehensive analysis, and interpretation of gravity data, we confirmed the existence of the west segment of the coastal fault zone (west of Yangjiang to Beibu Bay) in the coastal region of South China.
Lisi Bi +4 more
doaj +1 more source
Research on compressive sensing of strong earthquake signals for earthquake early warning
Geomatics, Natural Hazards & Risk, 2021 Earthquake early warning is an effective method to reduce casualties and losses. Based on the theory of compressive sensing, this paper proposes a strong earthquake signal processing architecture based on compressive sensing for difficulties of the ...
Jiening Xia +4 more
doaj +1 more source
Design, Implementation and Testing of a Network-Based Earthquake Early Warning System in Greece
Frontiers in Earth Science, 2021 In this study we implemented and tested the Earthquake Early Warning system PRESTo (PRobabilistic and Evolutionary early warning System, Satriano et al., 2011) on the Greek Ionian islands of Lefkada, Zakynthos and Kefalonia.
M. Bracale +4 more
doaj +1 more source
BUTSURI-TANSA(Geophysical Exploration), 2007 緊急地震速報は，震源の近くの観測点のデータを用いて，震源とマグニチュードを高速で決定し，強震動の分布を推定し，その情報を利用者へ即座に伝える。震源からある程度はなれたところにいる人には，強い揺れが来る前にある程度の時間的余裕（数秒から数十秒）をもって警報することが可能である。震源の即時決定のためには，利用できる観測点の数によってB-Δ法，テリトリー法（1～2点），グリッドサーチ法（3～5点）などの方法を使う一方で，防災科学研究所が開発した着未着法も活用している。地震のマグニチュードは，P波段階でマグニチュードが推定できるようにP波マグニチュードの式を使い，時間とともに全ての波を使ったマグニチュードの式に切り替える方式になっている。各地の最大震度の推定には ...
openaire +2 more sources
Crowd-Funded Earthquake Early-Warning System
2022 International Conference on Computational Science and Computational Intelligence (CSCI), 2022 Earthquake early warning systems has been proven to save countless lives in Japan, Mexico, and Chile, where earthquake warnings are often broadcast live on TV up to a minute before residents experience shaking. Unfortunately, traditional early warning systems require extensive capital investment.
Dy, Hudson Kaleb, Yeh, Hsi-Jen James
openaire +2 more sources
Deep Underground Science and Engineering, EarlyView.The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley +1 more source
Applied Sciences, 2019 Piping systems are important nonstructural components of most types of buildings. Damage to piping systems can lead to significant economic losses, casualties, and interruption of function.
Jie Tan +5 more
doaj +1 more source
Development of ShakeAlert 2.0 earthquake early warning system in the United States
地球与行星物理论评, 2021 ShakeAlert earthquake early warning system in the west coast of the United States can issue alerts to the public before destructive seismic waves arrive, mitigating the hazards of earthquakes.
Heyi Liu, Jindong Song, Shanyou Li
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang +10 more
wiley +1 more source
Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN
Deep Underground Science and Engineering, EarlyView.A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan +4 more
wiley +1 more source