Distribution and influencing factors of acoustic characteristics of seafloor sediment in the Sunda Shelf

作     者：Zhengyu HOU Danling TANG Jianguo LIU Zhenglin LI Peng XIAO 

作者机构：School of Ocean Engineering and TechnologySun Yat-sen University&Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519000China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-sen University)Ministry of EducationZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)&South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 511458China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2024年第42卷第5期

页      面：1486-1492页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：Supported by the National Key R&D Program of China(No.2021YFF0501202) the National Natural Science Foundation of China(Nos.12374428,42176191,U22A2012,12304507) the Guangdong Special Support Key Team Program(Nos.2019BT02H594,GML2021GD0810) the Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(No.SML2023SP232) the Fundamental Research Funds for the Central Universities,Sun Yat-sen University(No.24lgqb006) 

主　　题：seafloor sediment acoustic property Sunda Shelf 

摘      要：To understand the acoustic and physical properties of piston core samples collected from the Sunda continental shelf and analyze their distribution patterns,the samples were analyzed in laboratory,from which three provinces were divided in sound speed,sound speed ratio,porosity,wet bulk density,and maximum shear ***Ⅰhad lower sound speed and sound speed ratio(1.04),low porosity,and high wet bulk ***Ⅲhad the lowest sound speed and sound speed ratio(0.99),highest porosity(81%),and lowest wet bulk density(1.34 g/cm^(3)).The distribution pattern indicates that sediment movement,sediment source,topography,and hydrodynamic conditions influenced the distribution of acoustic and physical ***,we investigated the relationship of the maximum shear strength to the porosity and wet bulk density,and found that the maximum shear strength was proportional to both the porosity and wet bulk *** finding has significant implications for ocean engineering applications.