| 地震加速度监测中事件检测策略比较研究 |
| |
| 引用本文： | 李昌珑,廖成旺.地震加速度监测中事件检测策略比较研究[J].大地测量与地球动力学,2012,32(Z1):165-169. |
| |
| 作者姓名： | 李昌珑 廖成旺 |
| |
| 作者单位： | 中国地震局地震研究所(地震大地测量重点实验室),武汉430071;中国地震局地壳应力研究所武汉科技创新基地,武汉430071 |
| |
| 基金项目： | 中国地震局地震科技星火计划(XH12032) |
| |
| 摘 要： | 地震加速度监测中,实时、准确的事件检测具有重要意义.事件检测的常用方法是STA/LTA算法,使用地震加速度原始数据.考虑将地震加速度原始数据进行带通滤波和加速度速度数据转换,再使用STA/LTA算法.研究表明,带通滤波和速度数据都能优化事件检测的效果；二阶同四阶带通滤波效果差别不大；同时使用二阶带通滤波和速度数据的策略检测效果最好.
|
| 关 键 词： | 地震加速度 事件检测 P波 STA/LTA算法 带通滤波 |
STUDY ON COMPARISON AMONG EVENT DETECTION STRATEGIES FOR EARTHQUAKE ACCELERATION MONITORING |
| |
| Li Changlong
,
Liao Chengwang.STUDY ON COMPARISON AMONG EVENT DETECTION STRATEGIES FOR EARTHQUAKE ACCELERATION MONITORING[J].Journal of Geodesy and Geodynamics,2012,32(Z1):165-169. |
| |
| Authors: | Li Changlong Liao Chengwang |
| |
| Institution: | 1,2) 1)Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,Wuhan 4300712)Wuhan Base of Institute of Crustal Dynamics,CEA,Wuhan 430071 |
| |
| Abstract: | In earthquake acceleration monitoring,quick and accurate event detection is significant.The STA/LTA algorithm based on original earthquake acceleration data is often used in event detection(triggering P-wave).A strategy is presented,which at first,processes the earthquake acceleration data in two ways band-pass filtering and velocity data computing then uses the STA/LTA algorithm.The study shows that band-pass filtering and velocity data computing can both enhance the effect on event detection,hopwever,the effects of second and fourth order band-pass filtering are slightly different and it is better by using second order band-pass filtering and velocity data computing. |
| |
| Keywords: | earthquake acceleration event detection P-wave STA/LTA algorithm band-pass filtering |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
