南海周边各国可达性综合评估

该数据集为2018年全球（包含整个南海区域）的海上交通可达性图，使用了亿海蓝公司提供的2018年全年每日船舶AIS数据，利用非参数的核密度估计方法对船舶海上交通可达性进行计算，数据的空间分辨率为0.25°×0.25°。2018年全球船舶探索了519, 912个海上网格，达到全球海上网格总数的72.87%。图中浅绿色代表船舶轨迹密度大于等于1条的累计概率密度，即本章定义的海上船舶活动可达性在0~6.25%之间，深蓝色代表可达性在50%以上，颜色的区域越深可达性越高。

This dataset is a global maritime traffic accessibility map covering the entire South China Sea in 2018. It uses daily ship AIS data for the full year of 2018 provided by Eblue Maritime, and applies the non-parametric kernel density estimation method to calculate maritime traffic accessibility of vessels. The spatial resolution of the data is 0.25° × 0.25°. In 2018, global ships traversed 519,912 maritime grids, accounting for 72.87% of the total number of global maritime grids. In this map, light green represents the cumulative probability density where the ship trajectory density is greater than or equal to 1, which corresponds to the maritime ship activity accessibility ranging from 0% to 6.25% as defined in this chapter. Dark blue represents accessibility above 50%, and the darker the color of an area, the higher the accessibility.

搜集汇总

背景与挑战

背景概述

该数据集为2018年全球海上交通可达性图，基于船舶AIS数据采用核密度估计方法计算，空间分辨率0.25°×0.25°，通过颜色梯度直观展示南海及全球海域的可达性分布情况。