海洋预报2025，Vol.42Issue(1)：48-55,8.DOI:10.11737/j.issn.1003-0239.2025.01.006
基于AIS数据的北印度洋渔船时空活动特征分析
Spatiotemporal activity characteristics of fishing vessels in the North Indian Ocean based on AIS data
摘要
Abstract
For massive minute level data,referring to the grid of China's offshore fishing areas in regional division,time element is added to establish a grid in the northern Indian Ocean region(48.0°～116.5°E,28.5°N～26.5°S)as basic statistical unit.Based on the statistical unit,this study analyzes the distribution area,calculates operation time,and geometrically draws spatiotemporal distribution heat maps.Results show that there is a correlation between the distribution area of fishing vessels,the frequency of activity density,and time variables.There is a division method that makes the frequency distribution regular with a relative stable time-invariant structural characteristic.In addition,the approximate geographical locations of four oceanic fishing fields and four waterways are also speculated.关键词
海量数据/统一时空/作业时间/渔场推测/航道推测Key words
mass data/unified time and space/operation time/fishery speculation/channel speculation分类
海洋学引用本文复制引用
刘明慧,蔡文博,吴彬锋..基于AIS数据的北印度洋渔船时空活动特征分析[J].海洋预报,2025,42(1):48-55,8.基金项目
全球变化与海气互相作用(二期)专项(GASI-04-YBBZ). （二期）
