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Seafloor Sediment Study from South China Sea: Acoustic & Physical Property Relationship

Zhengyu Hou, Changsheng Guo, Jingqiang Wang, Wenjing Chen, Yongtao Fu, Tiegang Li
2015 Remote Sensing  
Seafloor sediments of different geographical areas in the southern South China Sea (continental shelf, continental slope, and Okinawa Trough) were gravity cored at 21 locations.  ...  Empirical equations from previous studies were applied to predict V of sediment samples from the measured physical properties and it was found that the sound velocities derived from the existing equations  ...  This study is funded by the National Special Research Fund of China for Non-Profit Marine Sector (No.200905025). Author Contributions Zhengyu Hou analyzed the data and wrote this paper.  ... 
doi:10.3390/rs70911570 fatcat:myh3g65cn5eoldx3f3uumuhsu4

Inversion of the physical properties of seafloor surface sediments based on AUV sub-bottom profile data in the northern slope of the South China Sea

Qingjie Zhou, Xishuang Li, Bigui Huang, Lejun Liu, Shan Gao, Hang Zhou, Jie Liu, Baohua Liu, Chengyi Zhang
2021 Scientific Reports  
AbstractBased on the seafloor reflection coefficient obtained from autonomous underwater vehicle (AUV) sub-bottom profile survey data of the northern slope of the South China Sea, combined with the sample  ...  The physical property parameters such as the porosity, density, and mean grain size of seafloor surface sediments are further inverted.  ...  Acknowledgements The study was funded by the NSFC-Shandong Joint Fund for Marine Science Research Centers (U1606401), the National Program on Global Change and Air-Sea Interaction (No.GASI-GEO-GE-05),  ... 
doi:10.1038/s41598-021-86161-x pmid:33753846 fatcat:f2quddaxkzgkhh6np2xfqwswbe

Estimation of Gas Hydrate Saturation Using Constrained Sparse Spike Inversion: Case Study from the Northern South China Sea

Xiujuan Wang, Shiguo Wu, Ning Xu, Guangxue Zhang
2006 Terrestrial, Atmospheric and Oceanic Sciences  
Bottom-simulating reflectors (BSRs) were observed beneath the seafloor in the northern continental margin of the South China Sea (SCS).  ...  Acoustic impedance profile was derived by Constrained Sparse Spike Inversion (CSSI) method to provide information on rock properties and to estimate gas hydrate or free gas saturations in the sediments  ...  Bottom-simulating reflectors (BSRs) were observed beneath the seafloor in the northern continental margin of the South China Sea (SCS).  ... 
doi:10.3319/tao.2006.17.4.799(gh) fatcat:jg7umuf7yzgd3b2xi3mkhtytp4

Geophysical Indicators of Gas Hydrate in the Northern Continental Margin, South China Sea

Xiujuan Wang, Shiguo Wu, Yiqun Guo, Shengxiong Yang, Yuehua Gong
2011 Journal of Geological Research  
Gas hydrate drilling results show that gas hydrate has a close relationship with strong bottom-simulating reflectors (BSRs) identified from seismic data in the Baiyun sag, South China Sea.  ...  Higher acoustic impedance and P-wave velocity were identified above the BSR.  ...  In China, eight sites were drilled in 2007 in Shenhu area, Pearl River Mouth basin (PRMB), the northern slope of South China Sea [18] .  ... 
doi:10.1155/2011/359597 fatcat:xoiay5torvbzlouhyb7cafn3bm

Preface to the Special Issue on Gas Hydrate Research around the South China Sea and Taiwan

Tsanyao Frank Yang, Char-Shine Liu, Ju-Chin Chen, Chi-Yue Huang
2006 Terrestrial, Atmospheric and Oceanic Sciences  
Lin et al. (2006) show a very fast sulfate reduction rate in pore waters from cored sediments in the northern part of continental margin of the South China Sea.  ...  In the last group of two papers, Jiang et al. (2006) present detailed mineralogy and physical properties of cored sediments from the gas hydrate potential area of offshore SW Taiwan.  ... 
doi:10.3319/tao.2006.17.3.i(gh) fatcat:ibfhsvgqujfkxdzpvlkqhgfjnq

Modeling and Prediction of Effects of Seafloor Sediment on Sound Velocity Based on Multi-parameter Analysis

Qijun Xiao, Zhonghui Luo, Bin Peng, Yongshun Luo, Min Wang, Yanghua Liu, Hanzhang Liu
2019 IOP Conference Series: Materials Science and Engineering  
slope in the Southern South China Sea.  ...  The principal component regression model is established based on the data of seafloor sediment of the continental slope in the Southern South China Sea.  ...  by Lu Bo et al. from the continental shelf in the south of the South China Sea [17] .  ... 
doi:10.1088/1757-899x/490/6/062066 fatcat:emyuczfi5nfghmlmjggeawjurm

Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled

D. P. Zou, P. Yan, J. P. Zhou
2014 Marine georesources & geotechnology  
The submarine in-situ environmental state was simulated to study the acoustic properties of seafloor sediments of the South China Sea in different temperature and pressure environments in this article  ...  with the application of the small-scale acoustic measurement system of seafloor sediments.  ...  , State Oceanic Administration, in Hangzhou, China, is applied to study the acoustic properties of sediments obtained from the northern South China Sea.  ... 
doi:10.1080/1064119x.2012.661032 fatcat:tt3n6pnhmvdhrgeambov6tkvxe

Grain and Pore Factors in Acoustic Response to Seafloor Sediments

Bo Lu, Qiang Liu, Ganxian Li
2010 Marine georesources & geotechnology  
In additon, he made an analysis of the relationship between the microstructure of calcium soil sediment and acoustic-physical properties in the central and southern South China Sea, proposing three microstructure  ...  The data here come from the southern South China Sea.  ... 
doi:10.1080/10641191003780724 fatcat:oab7gfemgbfczhgatwv2b3vk4a

Gas Hydrate Accumulation and Occurrence Associated with Cold Seep Systems in the Northern South China Sea: An Overview

Wei Zhang, Jinqiang Liang, Qianyong Liang, Jiangong Wei, Zhifeng Wan, Junxi Feng, Wei Huang, Jing Zhao, Miaomiao Meng, Wei Deng, Chongmin Chen, Jinze Xu
2021 Geofluids  
China Sea.  ...  Various cold seep systems and related gas hydrate accumulations have been discovered in the northern South China Sea in the past three decades.  ...  They are accompanied by a type of local abnormal sea water with various shapes, such as plumes, columns, and whips, which differ from the physical properties of the surrounding sea water [1] [2] [3] [  ... 
doi:10.1155/2021/5571150 fatcat:t5nnyyh2xjb5nng5qr7nrxptia

Elevated gas hydrate saturation within silt and silty clay sediments in the Shenhu area, South China Sea

Xiujuan Wang, Deborah R. Hutchinson, Shiguo Wu, Shengxiong Yang, Yiqun Guo
2011 Journal of Geophysical Research  
1] Gas hydrate saturations were estimated using five different methods in silt and silty clay foraminiferous sediments from drill hole SH2 in the South China Sea.  ...  Gas hydrate saturations derived from observed pore water chloride values in core samples range from 10 to 45% of the pore space at 190-221 m below seafloor (mbsf).  ...  Introduction [2] In June 2007, eight sites on the continental margin along the north slope of the South China Sea (SCS) were drilled to study gas hydrate, following about ten years of seismic exploration  ... 
doi:10.1029/2010jb007944 fatcat:drkq6s6ovfeqvddhus3ab534xe

GEOPHYSICAL PROPERTIES OF THE NORTHERN SOUTH CHINA SEA, THE CONTINENTAL MARGIN
南シナ海北部大陸縁辺域における地球物理学的特徴

Yukari Kido
2000 GEOINFORMATICS  
There are a lot of marginal basins around Circum-Pacific Zone from the north to the south. One of large marginal basins is the South China Sea(SCS).  ...  Compilation of marine gravity and magnetic data of the South China Sea clarified structural characteristics of its rifted continental and convergent margins, both past and present.  ...  ACKNOWLEDGEMENTS During the period of JCCP from 1992 to 1995, the author is much indebted to Profs.  ... 
doi:10.6010/geoinformatics1990.11.4_223 fatcat:bhw4rzo3qvblvjcbxo6xpkol4e

The North Pacific Acoustic Laboratory deep-water acoustic propagation experiments in the Philippine Sea

Peter F. Worcester, Matthew A. Dzieciuch, James A. Mercer, Rex K. Andrew, Brian D. Dushaw, Arthur B. Baggeroer, Kevin D. Heaney, Gerald L. D'Spain, John A. Colosi, Ralph A. Stephen, John N. Kemp, Bruce M. Howe (+2 others)
2013 Journal of the Acoustical Society of America  
the seafloor.  ...  ocean modeling, can yield estimates of the time-evolving ocean state useful for making improved acoustic predictions, (c) improving our understanding of the physics of scattering by internal waves and  ...  Revelle and individuals at the Applied Physics Laboratory of the University of Washington  ... 
doi:10.1121/1.4818887 pmid:24116529 fatcat:b6hlq6fk45dnle5sfu3znnjbs4

Seismic stratigraphy of the central South China Sea basin and implications for neotectonics

Chun-Feng Li, Jiabiao Li, Weiwei Ding, Dieter Franke, Yongjian Yao, Hesheng Shi, Xiong Pang, Ying Cao, Jian Lin, Denise K. Kulhanek, Trevor Williams, Rui Bao (+26 others)
2015 Journal of Geophysical Research - Solid Earth  
boundaries and facies of the central basin and neighboring regions of the South China Sea.  ...  Coring/logging data and physical property measurements from International Ocean Discovery Program Expedition 349 are integrated with, and correlated to, reflection seismic data to map seismic sequence  ...  Program of Higher Education of China (grant 20100072110036).  ... 
doi:10.1002/2014jb011686 fatcat:umzo7amsvrfjjknfbjcjdegrz4

Continent-ocean interactions within the East Asian Marginal seas

Peter D. Clift, Pinxian Wang, Wolfgang Kuhnt, Robert Hall, Ryuji Tada
2003 EOS  
uplift, climate change and the erosional response, (4) the carbonate reefs of the South China Sea, as recorders of high resolution climate and sea-level change, and (5) the Sunda Shelf to establish the  ...  longterm history of climate and sea-level changes and its relationship to atmospheric processes where the greatest ocean-atmosphere transfer of heat and moisture occurs.  ...  South China Sea Since the 1990es, the South China Sea has become one of the global foci in paleoceanographic studies.  ... 
doi:10.1029/2003eo150005 fatcat:2jp7fjypgjaobdmiygki33s3hu

Black-Box Modelling and Prediction of Deep-Sea Landing Vehicles Based on Optimised Support Vector Regression

Hongming Sun, Wei Guo, Yanjun Lan, Zhenzhuo Wei, Sen Gao, Yu Sun, Yifan Fu
2022 Journal of Marine Science and Engineering  
Due to the nonlinearity of the deep-seafloor and complexity of the hydrodynamic force of novel structure platforms, realising an accurate motion mechanism modelling of a deep-sea landing vehicle (DSLV)  ...  In this study, first, the prototype and system composition of the DSLV were proposed, and subsequently, the high-dimensional nonlinear mapping relationship between the motion state and the driving forces  ...  Combined with the current observation in the South China Sea and the hydrodynamic simulation results in Figure 8b , the current interference of the DSLV while crawling on the seafloor was set to 25 N.  ... 
doi:10.3390/jmse10050575 fatcat:wjpbiyv5ofan7ptqe4g4ygnxr4
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