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Development of in-situ Marine Sediment Geo-Acoustic Measurement System with Real-Time and Multi Frequencies (the Second Generation)

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【作者】 陶春辉； 邓显明； 李红星； 周建平； 金肖兵； 傅顺声； Wlkens R. H； 顾春华； 何拥华；

【Author】 TAO Chun-hui a,b,1,DENG Xian-ming a,b,e,LI Hong-xing a,b,c,ZHOU Jian-ping a,b,JIN Xiao-bing a,b,FU Shun-sheng d,Wilkens R.H.d,GU Chun-hua a,b and HE Yong-hua a,b a Key Laboratory of Submarine Geoscience,State Oceanic Administration,Hangzhou 310012,China b Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China c Department of Geophysics,East China Institute of Technology,Fuzhou 344000,China d School of Ocean and Earth Science and Technology,University of Hawaii,Honolulu,HI,96822,USA e School of Ocean Science,China University of Geosciences (Beijing),Beijing 100083,China

【机构】 Key Laboratory of Submarine Geoscience,State Oceanic Administration； Second Institute of Oceanography,State Oceanic Administration； School of Ocean Science,China University of Geosciences (Beijing)； Department of Geophysics,East China Institute of Technology； School of Ocean and Earth Science and Technology,University of Hawaii；

【摘要】 Compared with the laboratory acoustic measurement of sediment samples,the in-situ acoustic measurement in marine sediment is considered more accurate and reliable,because it covers all of the surrounding environment factors and avoids the disturbance during the course of sampling and transporting of sediment samples.A new multi-frequency in-situ geo-acoustic measurement system (MFISGAMS) has been developed.The system can provide acoustic velocity (compressional wave) and attenuation profiles of the uppermost 4～8 m sediment in the seafloor.It consists of 8 channels with 12 frequencies (multi-frequencies) and 0.5～2 MHz sampling rates.The data collected can be transmiuted in real-time.Associated with inclinometer and altimeter,it can provide the data for depth emendation.Acoustic velocity and attenuation data have been obtained from two in-situ experiments conducted in the Hangzhou Bay.

【Abstract】 Compared with the laboratory acoustic measurement of sediment samples,the in-situ acoustic measurement in marine sediment is considered more accurate and reliable,because it covers all of the surrounding environment factors and avoids the disturbance during the course of sampling and transporting of sediment samples.A new multi-frequency in-situ geo-acoustic measurement system (MFISGAMS) has been developed.The system can provide acoustic velocity (compressional wave) and attenuation profiles of the uppermost 4～8 m sediment in the seafloor.It consists of 8 channels with 12 frequencies (multi-frequencies) and 0.5～2 MHz sampling rates.The data collected can be transmiuted in real-time.Associated with inclinometer and altimeter,it can provide the data for depth emendation.Acoustic velocity and attenuation data have been obtained from two in-situ experiments conducted in the Hangzhou Bay.

【关键词】 marine sediment； in-situ acoustic measurement； acoustic velocity and attenuation；
【Key words】 marine sediment； in-situ acoustic measurement； acoustic velocity and attenuation；
【基金】 supported by the National High Technology Research and Development Program of China(863 Pro-gram, Grant No.2005AA615040);the National Natural Science Foundation of China(Grant No.40776038);Open Fund of Key Laboratory of Geo-detection(China University of Geosciences,Beijing),Ministry of Education (GrantNo. GDL0802);the Ocean Public Welfare Scientific Research Special Appropriation Project(Grant Nos.200805079and 200805005);the Open Fund of Key Laboratory of Submarine Geoscience,State Oceanic Administration(Grant No. KCSG0803)
  • 【文献出处】 China Ocean Engineering ,中国海洋工程(英文版) , 编辑部邮箱 ,2009年04期
  • 【分类号】P733.2
  • 【被引频次】14
  • 【下载频次】104
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