基于张量分解的西太平洋声速场分类

IF 2.3 3区 地球科学 Q2 OCEANOGRAPHY Deep-Sea Research Part I-Oceanographic Research Papers Pub Date : 2024-05-25 DOI:10.1016/j.dsr.2024.104328
Yinglin Chen , Peng Xiao , Chunhua Qiu , Zhenglin Li
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引用次数: 0

摘要

海洋的三维(3-D)声速结构是研究水下声传播建模和预报的基本环境要素。声速场(SSFs)的精确分类有助于全面了解和分析声传播模式。为了利用海洋声速场的三维结构,本文提出了一种基于张量分解的海洋三维声速场快速分类方法。利用 WOA18 数据集,对三维 SSF 进行高阶迭代正交(HOOI)分解,以准确提取 SSF 的特征信息。采用模糊 C-Means 聚类(FCM)方法对特征张量进行分类,划分不同季节的区域类别,揭示 SSFs 的典型结构。结合 BELLHOP 模型和各类第一汇聚区的特征分析,得出西太平洋 SSFs 共有六类的结论。各类 SSF 主要呈纬度分布,具有明显的声道轴线和表面声速变化特征。
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Classification of sound speed fields in the Western Pacific Ocean based on tensor decomposition

The three-dimensional (3-D) sound speed structure of the ocean is a fundamental environmental element in studying underwater sound propagation modeling and forecasting. The accurate classification of the sound speed fields (SSFs) provides a comprehensive understanding and analysis of the sound propagation pattern. To take advantage of the 3-D structure of the ocean SSFs, this paper presents a quick method based on tensor decomposition for classifying the ocean 3-D SSFs. Utilizing the WOA18 dataset, High Order Iterative Orthogonal (HOOI) decomposition of the 3-D SSFs is executed so as to accurately extract the characteristic information of the SSFs. The Fuzzy C-Means clustering (FCM) method is applied to classify the feature tensors, partitioning of regional categories in different seasons and revealing the typical SSFs structures. By combining the BELLHOP model with analysis of the characteristics of the first convergence zone of each category, it is concluded that there are six categories of SSFs in the Western Pacific Ocean. The SSFs across all categories are primarily latitudinally distributed, featuring distinct sound channel axes and surface sound speed variations.

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来源期刊
CiteScore
4.60
自引率
4.20%
发文量
144
审稿时长
18.3 weeks
期刊介绍: Deep-Sea Research Part I: Oceanographic Research Papers is devoted to the publication of the results of original scientific research, including theoretical work of evident oceanographic applicability; and the solution of instrumental or methodological problems with evidence of successful use. The journal is distinguished by its interdisciplinary nature and its breadth, covering the geological, physical, chemical and biological aspects of the ocean and its boundaries with the sea floor and the atmosphere. In addition to regular "Research Papers" and "Instruments and Methods" papers, briefer communications may be published as "Notes". Supplemental matter, such as extensive data tables or graphs and multimedia content, may be published as electronic appendices.
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