Inversion of Sub-Bottom Profile Based on the Sediment Acoustic Empirical Relationship in the Northern South China Sea
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Le résumé fourni par la source
This study focuses on the inversion of sub-bottom profile (SBP) data in the northern South China Sea using an empirical relationship derived from sediment acoustic data. The sub-bottom profile is primarily utilized for various marine applications, such as geological mapping and resource exploration. In this research, we present a study conducted in the northern slope canyon of the South China Sea. Firstly, we obtained the seabed reflection coefficient from sub-bottom profiles obtained by the autonomous underwater vehicle (AUV) detection system. Secondly, we utilized the acoustic empirical relationship in the northern South China Sea to establish relationship equations between the seabed reflection coefficient and the porosity, density, and average particle size of the sediment at a main frequency of 4 kHz (the AUV shallow profile main frequency). Then, using these equations, we were able to invert the physical parameters such as porosity, density, and average particle size of the seabed surface sediments. Finally, the inverted results are compared and analyzed by using the sediment samples test data. The overall deviation rate of the inverted physical parameters is within the range of ±10% when compared. The inverted results closely match the measured values, accurately reflecting the dynamic changes in the physical properties of seabed surface sediments. Notably, the average grain size is a direct indicator of the sediment particles size with smaller particles found in deeper water. The variation characteristics of sediment physical parameters align well with the variation of sediment types in the canyon, which is consistent with changes in the water depth, topography, and hydrodynamic conditions of the area. This further demonstrates the reliability of the inversion results.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Inversion of Sub-Bottom Profile Based on the Sediment Acoustic Empirical Relationship in the Northern South China Sea
- Date Crossref
- 08/02/2024
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Ministry of Natural Resources pays non établi dans la noticeOrganisme public
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First Institute of Oceanography pays non établi dans la noticeStructure de recherche
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Chinese Academy of Sciences pays non établi dans la noticeOrganisme public
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Shenzhen Institutes of Advanced Technology pays non établi dans la noticeStructure de recherche
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Laoshan Laboratory pays non établi dans la noticeStructure de recherche
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Key Laboratory of Marine Geology and Metallogeny pays non établi dans la noticeStructure de recherche
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Key Laboratory of Submarine Acoustic Investigation Technology and Application of Qingdao (Preparatory) pays non établi dans la noticeStructure de recherche
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Shenzhen Institute of Advanced Technology pays non établi dans la noticeStructure de recherche
Ministry of Natural Resources, First Institute of Oceanography et Chinese Academy of Sciences, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.