地震事件自动检测新方法

A New Method of Automatic Seismic Event Detection

摘要:

地震事件的自动准确检测是地震速报的基础。本文基于地震信号所具有的非高斯性、非线性以及地震波的线偏振性特征并结合长短时平均比方法,提出了一种新的地震事件自动检测方法(EGLP)。基于山东数字化地震台网波形资料的研究结果表明,新方法(EGLP)能有效抑制高斯噪声、突出地震信号,提高了地震事件触发判断的准确性。

Abstract:

Detecting seismic event automatically and accurately is the base of earthquake rapid report. In this paper, a new method of automatic seismic event detection（EGLP） is proposed, which is based on the characteristics of seismic signal such as non-Gaussian, non-linear, plane polarization and STA/LTA method. Appling on Shangdong seismic network＇s digital seismic wave. It is found that the new method can suppress the Gaussian noise and make seismic signal evidence, improve the accuracy of seismic event detection.