本文關(guān)鍵詞： 環(huán)境地震波 觀測 分析　出處：《艦船科學技術(shù)》2017年19期 　論文類型：期刊論文

【摘要】：海洋環(huán)境水下地震波是水中目標探測、海底地殼活動及勘探等領(lǐng)域的重要研究方向。本文利用地震波傳感器對我國部分海域環(huán)境地震波進行觀測,并用爆炸聲源對已知信號進行海上測試。經(jīng)分析可得:根據(jù)不同震源可將環(huán)境地震波從頻率上分為長周期波、遠震、近震、航線等,航線地震波與其他噪聲相比在5 Hz以上有明顯寬頻信號;同一海域,遠震、近震和航線等環(huán)境地震波受水深影響較大;深海環(huán)境地震波噪聲較低,且深海比淺海艦船地震波探測距離增加1倍以上;單傳感器接收時地震波傳感器接收信號信噪比高于水聽器;爆炸聲源地震波水平分量信噪比大于垂直分量,極化特征明顯。
[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.
【作者單位】： 大連測控技術(shù)研究所;
【基金】：國家自然科學基金資助項目(41274051)
【分類號】：P714.3
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本文編號：1537931