期刊
SENSORS
卷 21, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/s21155084
关键词
earthquake; early warning system; seismic risk mitigation; Gulf of Corinth
资金
- project Integrated Earthquake Early Warning System for Industrial Site Applications: the ARIS Project
- EU
- Operational Program Competitiveness, Entrepreneurship, and Innovation, under the call RESEARCH-CREATE-INNOVATE [5030439]
The goal of an Earthquake Early Warning System (EEWS) is to alert before damaging waves arrive, using first seismic arrival as a proxy for real-time seismic risk management. This study analyzed amplitude and frequency-based parameters in Eastern Gulf of Corinth and Western Attica for the plausibility of EEWS, proposing a potential future on-site EEWS for these earthquake-prone areas. Further evaluation is needed for parameters related to regional-based EEWS.
The main goal of an Earthquake Early Warning System (EEWS) is to alert before the arrival of damaging waves using the first seismic arrival as a proxy, thus becoming an important operational tool for real-time seismic risk management on a short timescale. EEWSs are based on the use of scaling relations between parameters measured on the initial portion of the seismic signal after the arrival of the first wave. To explore the plausibility of EEWSs around the Eastern Gulf of Corinth and Western Attica, amplitude and frequency-based parameters, such as peak displacement (P-d), the integral of squared velocity (I-2(V)) and the characteristic period (tau(c)), were analyzed. All parameters were estimated directly from the initial 3 s, 4 s, and 5 s signal windows (t(w)) after the P arrival. While further study is required on the behavior of the proxy quantities, we propose that the I-2(V) parameter and the peak amplitudes of the first seconds of the P waves present significant stability and introduce the possibility of a future on-site EEWS for areas affected by earthquakes located in the Eastern Gulf of Corinth and Western Attica. Parameters related to regional-based EEWS need to be further evaluated.
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