Cluster Analysis of Deep Water Sound Speed Profiles in Indian Ocean

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Wang, Hua^1 ; Li, Yunbo^2 ; Li, Qinghong^1 ; Yu, Xiangjun^1

Dalian Navy Academy, Dalian Liaoning, China^1

Navy Marine Hydrometeorological Center, Beijing, China^2

关键词: Acoustic propagation;    Fuzzy C means clustering;    Hierarchical clustering methods;    North indian oceans;    Seasonal distributions;    Seasonal variation;    Sonar detection performance;    Sound speed profiles;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/5/052048/pdf
DOI  :  10.1088/1755-1315/310/5/052048

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Sound speed profiles in the ocean have a significant impact on the acoustic propagation, thus affecting the sonar detection performance. Sound speed profiles have characteristics of positional and seasonal distribution. In order to guide the sonar detection, use WOA13 dataset, calculate the number of categories of sound speed profiles by hierarchical clustering method, classify sound speed profiles categories and typical sound speed profile structure of various categories in different seasons by fuzzy c-means clustering. It is concluded that there are 7 categories of sound speed profiles in Indian ocean: Antarctic Water category, Antarctic Transition Water category, Sub-Antarctic Transition Water category, Sub-Antarctic Water category, Sub-Tropical Water category, Tropical Divergence Zone category and North Indian Ocean Water category. The distribution area of these categories are generally zonal distribution. Sub-Tropical Water category, Tropical Divergence Zone category and North Indian Ocean Water category have significant seasonal variations. The seasonal variation of other categories are not significant.