DOI: 10.1007/s11069-021-04589-w
论文题名: Seismic attenuation model for data gap regions using recorded and simulated ground motions
作者: Raghucharan M.C. ; Somala S.N. ; Erteleva O. ; Rogozhi E.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 107, 期: 1 起始页码: 423
结束页码: 446
语种: 英语
中文关键词: Artificial neural networks
; CIGN
; GMPE
; Indo-Gangetic Plains
; PESMOS
; Seismic attenuation
英文关键词: accuracy assessment
; data set
; earthquake magnitude
; ground motion
; natural hazard
; numerical model
; seismic attenuation
; seismicity
; Gangetic Plain
英文摘要: In this study, seismic attenuation model is derived using recorded and simulated ground motions covering the data gap region of the Indo-Gangetic Plains (IGP), employing artificial neural networks (ANN) methodology. Four independent variables moment magnitude (Mw), focal depth, epicentral distance (Repi), and average shear wave velocity up to 30 m depth (Vs30) are selected to predict peak ground acceleration (PGA) and pseudo-spectral acceleration (PSA) (5% damping) between periods 0.01 to 4 s (twenty-five periods in total), utilizing 926 recordings (PESMOS, CIGN and synthetic database). A feed-forward ANN with Levenberg–Marquardt training algorithm is employed for training the network of input and output dataset. The optimal network architecture obtained in this study consists of 4–9–26 input, hidden and target nodes, respectively. In spite of the absence of presumed functional dependencies in ANN methodology, our model captured a number of sound physical features of earthquake ground motion: magnitude scaling, attenuation with distance and radiation damping. Further, the performance of the model is measured by the standard deviation of the error, σ(ε), and compared with the four widely used conventional GMPEs applicable for IGP region of India. The standard deviations for our model varied between 0.208 and 0.263 which is less than the classical GMPEs at all twenty-six periods of PSA. Finally, the ANN model performance is compared with recorded ground motions at four stations and conventional GMPEs, and the results affirm that this model is competent to predict the response spectrum with good accuracy for IGP region. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169314
Appears in Collections: 气候变化与战略
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作者单位: Department of Civil Engineering, Indian Institute of Technology Hyderabad, Hyderabad, 502285, India; Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, 123242, Russian Federation
Recommended Citation:
Raghucharan M.C.,Somala S.N.,Erteleva O.,et al. Seismic attenuation model for data gap regions using recorded and simulated ground motions[J]. Natural Hazards,2021-01-01,107(1)