Bight 98 Debris Harmonized

The Southern California Bight (SCB), an open embayment in the coast between Point Conception and Cape Colnett (south of Ensenada), Baja California, is an important and unique ecological resource. The SCB is a transitional area influenced by currents from cold, temperate ocean waters from the north and warm, tropical waters from the south. The SCB has a complex topography, with offshore islands, submarine canyons, ridges and basins, providing a variety of habitats that support more than 500 species of fish and 1,500 species of invertebrates. The SCB is a major migration route, with marine bird and mammal populations ranking among the most diverse in north temperate waters. The coastal zone of the SCB is a substantial economic resource, with Los Angeles/Long Beach Harbor being the largest commercial port in the United States and more than 100 million people visiting southern California beaches annually. Nearly 20 million people inhabit coastal Southern California, creating significant stress upon the marine environment. The SCB hosts fifteen municipal wastewater treatment facilities, eight power generating stations, 10 industrial treatment facilities, and 18 oil platforms that discharge to the open coast. This dataset contains trawl debris data collected as part of the Bight'98 regional survey, enumerating the distribution and types of debris observed across the Southern California Bight between July and October 1998. Debris types include rocks, terrestrial and marine vegetation, lumber, plastic, metal debris, cans, glass bottles, fishing gear, tires, and other benthic debris, classified by abundance and estimated weight categories.南加州湾（Southern California Bight，SCB）是坐落于孔塞普申角与下加利福尼亚州恩塞纳达以南的科尔特角之间的近海海湾，是一处兼具重要性与独特性的生态资源。该海湾是受北方寒冷温带洋流与南方温暖热带洋流共同影响的过渡性海域，地形复杂多样，拥有离岸岛屿、海底峡谷、海脊与海盆，为500余种鱼类及1500余种无脊椎动物提供了多样栖息生境。南加州湾是重要的海洋洄游通道，其海鸟与海洋哺乳动物种群的多样性位列北温带海域前茅。南加州湾沿岸带亦是极具价值的经济资源：洛杉矶/长滩港为美国规模最大的商业港口，每年超1亿人次到访南加州海滩；近2000万人居住在南加州沿海区域，给当地海洋环境带来了显著压力。该海湾共设有15座市政污水处理厂、8座发电站、10座工业处理设施，以及18座向公海排放污染物的石油平台。本数据集包含作为「Bight'98区域调查」项目组成部分所采集的拖网垃圾数据，统计了1998年7月至10月间南加州湾全域范围内观测到的垃圾分布与类型。垃圾类型涵盖岩石、陆生与海洋植被、木材、塑料、金属废弃物、易拉罐、玻璃瓶、渔具、轮胎及其他底栖垃圾，并按丰度与估算重量类别完成分类。