基于土耳其7.8级地震序列对我国高铁P波预警算法的性能改进研究OA北大核心CSTPCD
Study on Performance Improvement of P-wave Early Warning Algorithm for China's High-speed Rail Based on the M 7.8 Earthquake Sequence in Turkey
基于2023年2月6日 土耳其7.8级地震及其余震作为测试数据集,通过测试不同震中距和震级下基于STA/LTA和滑动窗AIC法组合的高铁P波地震预警算法的触发率和识别准确率,发现在200 km范围内该算法能够有效识别地震P波并捡拾到P波初至.此外,研究了最大预警时间和P波判别计算时间随震中距和震级的变化,发现最大预警时间和P波判别计算时间与震中距变化有密切关联,但与震级变化无明显关联.
Based on the test dataset of the M7.8 magnitude earthquake in Turkey on February 6th,2023 and its aftershocks,trigger rate and recognition accuracy of P-wave Early Warning Algorithm for high-speed rail based on STA/LAT and sliding AIC algorithm in different epicentral distances and magnitudes are evaluated.And it is found that within a 200 km range,the algorithm could effectively identifify earthquake P-waves and detect the P-wave onset.Additionally,the study investigated the variations in maximum warning time and P-wave discrimi-nation calculation time with changes in epicentral distance and magnitude are investigated,and it is observed that maximum warning time and P-wave discrimination calculation time are closely associated with changes in epicen-tral distance,but show no significant correlation with changes in magnitude.
慕阳;李慧;雷宛;曾鹏;李惠玉
四川西南交大铁路发展股份有限公司,四川成都 610091||运营安全保障铁路行业工程研究中心,四川成都 611436||四川省高铁工务安全监测技术工程实验室,四川成都 611436成都理工大学环境与土木工程学院,四川成都 610059中国中铁科学研究院有限公司,四川成都 610032
环境科学
高铁地震预警地震预警算法P波快速捡拾P波现地预警土耳其7.8级地震
high-speed railway earthquake early warningEarthquake early warning algorithmP-wave rapid pick-upon-site P-wave early warningTurkey M7.8 earthquake
《灾害学》 2024 (002)
73-79,91 / 8
四川省科技计划项目(省院省校合作项目)"城市轨道交通地震监测预警及紧急处置研究"(2020YFSY0060)
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