Cluster Analysis of Deep Water Sound Speed Profiles in Indian Ocean

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Wang, Hua, Li, Yunbo, Li, Qinghong, Yu, Xiangjun
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2019
• Subjects: Antarctic; Indian; Water Sound; Antarc*
• Online Access: http://dx.doi.org/10.1088/1755-1315/310/5/052048; https://iopscience.iop.org/article/10.1088/1755-1315/310/5/052048/pdf; https://iopscience.iop.org/article/10.1088/1755-1315/310/5/052048

Abstract 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.