Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Shanghai Jiaotong University》 2014-01
Add to Favorite Get Latest Update

Analysis of Synthetic Seismograms at Seafloor Caused by Low Frequency Sound Source

LUZai hua;ZHANG Zhi-hong;GU Jian-nong;College of Science,Naval University of Engineering;  
Numerical calculations of range-stacked synthetic seismograms at seafloor caused by low frequency sound source at different shallow sea environments were conducted in this paper with the combination of the FFP model with inverse Fourier transform.According to the calculated results of numerical examples, the time series of seismic wave at seafloor are mostly composed of interface waves and normal mode waves. The time series of seismic wave is dominated by interface wave if the source frequency is less than the minimal cut-off frequency of normal modes.More and more normal modes appear when the source frequency increases and gradually passes their cut-off frequency respectively.The normal modes gradually become the significant carriers of source energy and surface wave weakens accordingly.The more closely the sound source approaches to the seafloor,the more efficiently the seismic wave is excited,and the interface wave prevails in the synthetic seismograms simultaneously.When the source frequency is very low,the seismic wave is more strongly generated in soft seabeds than in hard seabeds,but more weakly when the source frequency is relatively higher.
【Fund】: 国家自然科学基金(51179195);; 国防基金(513030203-02)资助项目
【CateGory Index】: P733.23
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
Chinese Journal Full-text Database 4 Hits
1 ZHANG Hai-gang,PIAO Sheng-chun,YANG Shi-e(Acoustic Science and Technology Laboratory,Harbin Engineering University,Harbin 150001,China);Propagation of seismic waves caused by underwater infrasound[J];Journal of Harbin Engineering University;2010-07
2 LI Xiang,YAN Bing(Department of Weaponry Engineering,Naval University of Engineering,Wuhan430033,China);Ship's seismic-wave field influenced by the characteristic of different marine sediment[J];Ship Science and Technology;2008-04
3 CUI Pei,BAI Chun-zhi(Dalian Scientific Test and Control Technology Institute,Dalian 116013,China);Statistic characteristic of environment noise of seismic wave for the ship[J];Ship Science and Technology;2011-03
4 LU Zai-hua,ZHANG Zhi-hong,GU Jian-nong(College of Science,Naval University of Engineering,Wuhan 430033,China);Characteristics of seabed seismic wave caused by point sound source in various shallow water circumstances[J];Technical Acoustics;2009-05
Chinese Journal Full-text Database 5 Hits
1 Su Jiasheng 1,Teng Baohua2,Xue Zonglin 1(1.School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;2.School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China);The Research of the Spreading Characteristics of Seismic Waves with the Attenuating Coefficients[J];Chinese Journal of Engineering Geophysics;2010-05
2 LU Zai-hua,ZHANG Zhi-hong,GU Jian-nong(College of Science,Naval Univ.of Engineering,Wuhan 430033,China);Seabed seismic wave caused by point sound source based on viscous-elastic artificial boundaries[J];Journal of Naval University of Engineering;2011-02
3 LI Xiang,YAN Bing(Department of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,China);Detection system for the ship's seismic-wave field[J];Ship Science and Technology;2010-10
4 ZHANG Haigang PIAO Shengchun YANG Shi'e AN Xudong (National Laboratory of Underwater Acoustic Technology,Harbin Engineering University Harbin 150001);Researches on the distribution law of vector sound field in elastic wedge bottom[J];声学学报(英文版);2011-04
5 LU Zai-Hua ZHANG Zhi-Hong GU Jian-Nong (College of Science,Naval University of Engineering,Wuhan 430033);Application of transmitting artificial boundary in the numerical calculation of seabed seismic wave caused by a point sound source[J];Applied Acoustics;2010-05
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 WANG Tai-yue,LI Zhi-ming(School of Mathematics and Physics,China University of Geosciences,Wuhan 430074,China);A FAST PARAMETER ESTIMATION OF GENERALIZED GAUSSIAN DISTRIBUTION[J];Chinese Journal of Engineering Geophysics;2006-03
2 LIU Qiang,LU Bo (South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China);Progress and Prospect of Seabed Sediments Acoustic Attenuation[J];Ocean Technology;2006-02
3 CHEN Yun-fei,LU Jun-jun,YU Feng(Dalian Scientific Test & Control Technology Institute, Dalian 116013,China);The ship induced seismic wave and it's application in the underwater target detection[J];;2005-03
4 Yan Bing Zhou Wei Gong Shenguang(Naval Univ.of Engineering,Wuhan 430033);A Normal Mode Model for Ocean Seismo-acoustics in Shallow Water[J];Journal of Wuhan University of Technology(Transportation Science & Engineering);2006-05
5 Lu Zaihua Zhang Zhihong Gu Jiannong(Science College Mechanics Department,Naval University of Engineering,Wuhan 430033);Numerical Simulation of Seafloor Seismic Wave Caused by Low Frequency Point Sound Source in Shallow Water[J];Journal of Wuhan University of Technology(Transportation Science & Engineering);2007-04
6 Tang Yonglu(Research Station of South China Sea, Chinese Academy of Sciences, Haikou 570105);The Relationship between porosity of sea bed sediment and sound velocity[J];ACTA OCEANOLOGICA SINICA;1998-06
7 LU Li-cheng,MA Li,CHEN Yao-ming (Institute of Acoustics,Chinese Academy of Sinences,Beijing 100080,China);Effects of seabed model on low frequency sound propagation in shallow water[J];Technical Acoustics;2007-05
8 TANG Yingwu(Institute of Acoustics,Academia Sinica);Reflection of acoustic waves from marine sediment[J];Acta Acustica;1994-04
9 Lu Zaihua Zhang Zhihong Gu Jiannong (Navy University of Engineering,science college mechanics department,430033,Wuhan,China);Theoretical Analysis to Mechanism of Seafloor Seismic Wave Induced by Sailing Vessel[J];Chinese Journal of Applied Mechanics;2007-01
10 ZHOU Wei,YAN Bing(Naval Univ.of Engineering,Wuhan 430033,China);Bottom Loss of the Ship′s Low Frequency Noise from a Horizontally Stratified Sea Bottom[J];Noise and Vibration Control;2006-02
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved