OBS海洋环境信号分析与应用

发布时间：2018-06-14 23:43

  本文选题：海洋环境信号 + OBS(Ocean　； 参考：《海洋科学》2016年02期

【摘要】：为研究海洋环境信号在OBS(Ocean Bottom Seismograph)原始数据中的规律及应用,根据OBS原始数据的波形及频谱特征,将研究区划分为5个时间段,依次为旧涌浪阶段、风浪渐强阶段、风浪全盛阶段、风浪消退阶段和新涌浪阶段。结合海洋天气预报,认为上述现象是由偏南风风浪对海流的影响造成的。参考野外地震数据采集记录班报,得到各阶段的时长和距离,计算风浪渐强、全盛和消退阶段OBS附近海流的平均速度。结果表明:OBS原始资料中浅海海洋环境噪音增强的主要因素是风浪,且风浪引起的噪音信号的波形变化特征是渐进式的;OBS可用于接收某种特殊阶段(如台风、海啸等)的噪音信号,并根据噪音信号的波形特征、频谱变化规律和持续时间估算该阶段的海流速度变化。
[Abstract]:In order to study the regularity and application of marine environmental signals in the original data of Ocean bottom Seismograph, according to the waveform and spectrum characteristics of OBS raw data, the study area is divided into five periods: the old surge stage, the wind wave gradually strengthening stage, and the wind wave peak stage. Wind wave receding stage and new surge stage. Combined with ocean weather forecast, it is considered that the above phenomenon is caused by the influence of wind and waves on the current. With reference to the field seismic data acquisition and recording shift, the time and distance of each stage are obtained, and the average velocity of the current near OBS in the stage of wind and wave is calculated. The results show that the main factor of the noise enhancement in the shallow ocean environment in the original data of: OBS is the wind and waves, and the characteristic of the waveform variation of the noise signals caused by the wind waves is that the progressive OBS can be used to receive some special stages (such as typhoon, for example, typhoon). The variation of current velocity in this stage is estimated according to the waveform characteristics, spectrum variation and duration of the noise signal.
【作者单位】： 中国海洋大学海底科学与探测技术教育部重点实验室;中海石油(中国)有限公司湛江分公司;青岛海洋地质研究所;
【基金】：国家自然科学基金重点项目(41230318;41240005;90814011) 国家863项目(2009AA093401)~~
【分类号】：P715
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本文编号：2019506