不同海域海洋环境水下地震波观测与分析

发布时间：2018-02-26 12:02

  本文关键词： 环境地震波 观测 分析　出处：《舰船科学技术》2017年19期 　论文类型：期刊论文

【摘要】：海洋环境水下地震波是水中目标探测、海底地壳活动及勘探等领域的重要研究方向。本文利用地震波传感器对我国部分海域环境地震波进行观测,并用爆炸声源对已知信号进行海上测试。经分析可得:根据不同震源可将环境地震波从频率上分为长周期波、远震、近震、航线等,航线地震波与其他噪声相比在5 Hz以上有明显宽频信号;同一海域,远震、近震和航线等环境地震波受水深影响较大;深海环境地震波噪声较低,且深海比浅海舰船地震波探测距离增加1倍以上;单传感器接收时地震波传感器接收信号信噪比高于水听器;爆炸声源地震波水平分量信噪比大于垂直分量,极化特征明显。
[Abstract]:The underwater seismic wave in marine environment is an important research direction in the field of underwater target detection, crustal activity and exploration, etc. In this paper, the seismic waves in some sea areas of China are observed by using seismic wave sensors. The known signals are tested at sea with explosion sound sources. According to the analysis, the environmental seismic waves can be divided into long period waves, distant earthquakes, near earthquakes, routes and so on according to the different sources. Compared with other noises, the seismic waves in the route have obvious broadband signals above 5 Hz. In the same sea area, the seismic waves in the remote, near and route environments are greatly affected by the water depth, and the noise of the seismic waves in the deep sea environment is relatively low. The signal-to-noise ratio of seismic wave is higher than that of hydrophone, the horizontal component of explosion source is larger than the vertical component, and the polarization characteristic is obvious.
【作者单位】： 大连测控技术研究所;
【基金】：国家自然科学基金资助项目(41274051)
【分类号】：P714.3
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本文编号：1537931