Computer simulated ship tracks for oceanic voyages

Maritime shipping paths were simulated between ecoprovinces of the Marine Ecoregions of the World (MEOW) biogeographic classification system (Spalding et al. 2007), using centroids generated via GIS to create point locations for each ecoprovince. Paths were simulated to not intersect with land. The dataset contains calculations of overall distance between centroids of each pair of ecoprovinces, i.e. the length of the path, and derivations of the minimum and maximum longitude and latitude along the path. The goal was to calculate marine biosecurity risk due to two important voyage-related risk factors, voyage duration (based on path length) and cross-latitudinal extent of the voyage path (which affects seawater temperature range).本研究基于世界海洋生物地理分区系统（Marine Ecoregions of the World，缩写MEOW）的生态省单元，模拟生成远洋航运路径；该分类体系由Spalding等人于2007年提出，研究中借助地理信息系统（Geographic Information System，GIS）生成各生态省的质心点位，作为其空间标识。所有模拟路径均避开陆地，不与陆地相交。本数据集包含每一对生态省质心间的总距离（即航运路径长度）的计算结果，以及沿路径的最小、最大经纬度的衍生参数。本数据集的构建目标是基于两项关键的航行相关风险因子，计算海洋生物安全风险：其一为航行时长（由路径长度推导得出），其二为航行路径的跨纬度跨度（该跨度会影响航行海域的海水温度区间）。