SWFSC Marine Mammal Survey of the Eastern Tropical Pacific (1268)

This 1989 eastern tropical Pacific cetacean line-transect survey was
the fourth in a series of annual surveys (1986-1990) designed to monitor and
detect trends in populations of dolphins killed in the yellowfin tuna purse
seine fishery. This survey was conducted by the NOAA Southwest Fisheries
Science Center aboard NOAA ships David Starr Jordan and McArthur for a combined
total of approximately 27,000 kilometers surveyed from late July to early
December 1989. This dataset provides the time-date and geographical
coordinates, by species/stock, of all cetaceans detected during the survey, as
well as the daily and intra-daily start and end points of the line-transect
survey.

1989年东热带太平洋鲸类线样带（line-transect）调查，是1986至1990年度系列年度监测调查的第四项。该系列调查旨在监测并探明黄鳍金枪鱼围网渔业中误捕致死的海豚种群的数量变化趋势。
本次调查由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）西南渔业科学中心组织开展，搭载NOAA科考船"戴维·斯塔尔·乔丹号"（David Starr Jordan）与"麦克阿瑟号"（McArthur）执行任务，于1989年7月下旬至12月初完成，总调查航程共计约27000千米。
本数据集收录了本次调查中观测到的所有鲸类的观测时间与地理坐标，并按物种/种群进行分类；同时还包含该线样带调查的每日及日内起止航点信息。