Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)

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Quantifying the Impact of Site and Path Effects on the Rapid Estimation of Source Parameters

Authors
Quan Dong1, *
1Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin, 150080, China
*Corresponding author. Email: dongquan233233@163.com
Corresponding Author
Quan Dong
Available Online 28 July 2025.
DOI
10.2991/978-94-6463-793-9_94How to use a DOI?
Keywords
source parameters; site effect; path effect; site classification; time-domain method
Abstract

Local site conditions significantly influence ground motion and are critical for earthquake engineering and geotechnical earthquake engineering. Earthquake early warning systems (EEWs) typically rely on early ground acceleration records to estimate magnitude, which are inevitably affected by site effects. Recently, a method for measuring source parameters in the time domain has been proposed, showing potential for application in earthquake early warning. This study investigates the influence of local site conditions and propagation paths on this new method in EEWs, utilizing a dataset from 96 earthquakes with MW ≥ 5.5 recorded by KiK-net in Japan. The results indicate that the effects of site response on moment magnitude, corner frequency, and stress drop are noticeably weakened. Particularly, as earthquake magnitude increases, the influence of site effects on the measured source parameters gradually diminishes. Additionally, path effects generally have a limited impact on the estimation of source parameters from the new method. This research provides a quantitative evaluation method for determining source parameters in earthquake early warning systems and offers significant insights into enhancing parameter estimation accuracy in practical applications.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
Series
Atlantis Highlights in Engineering
Publication Date
28 July 2025
ISBN
978-94-6463-793-9
ISSN
2589-4943
DOI
10.2991/978-94-6463-793-9_94How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Quan Dong
PY  - 2025
DA  - 2025/07/28
TI  - Quantifying the Impact of Site and Path Effects on the Rapid Estimation of Source Parameters
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 1111
EP  - 1127
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_94
DO  - 10.2991/978-94-6463-793-9_94
ID  - Dong2025
ER  -