Visual sightings of krill swarms at the sea surface from the Aurora Australis during the BROKE-West voyage, 2005-2006

A collection of data files detailing visual sightings of krill swarms on the sea surface from the Aurora Australis during the BROKE-West voyage, 2005-2006.These data were additional data collected by whale observers. See the record, "BROKE-West_Cetaceans" for full details on the process of collecting whale observations. In summary though, observers were present from the time the vessel departed Fremantle until it approached Hobart. Observers worked whenever light, weather and sea conditions permitted. Generally between two and five observers were working at any given time (see the above cetaceans metadata record for more information).The download file contains:- GIS shapefiles showing the locations of the recorded swarms on the ship's track.- A csv and Excel file of the recorded observations.- Several map images showing the ship's track and the observed swarms.The BROKE-West survey was conducted on voyage 3 of the Aurora Australis during the 2005-3006 season. It was intended to be a comprehensive biological and oceanographic survey of the region between 30 degrees and 80 degrees east.

本数据集收录了2005-2006年BROKE-West科考航次期间，“极光号”（Aurora Australis）获取的海面磷虾群目视观测数据文件。该批数据为鲸类观察员采集的补充观测数据。如需了解鲸类观测数据的完整采集流程，请参阅记录"BROKE-West_Cetaceans"。简言之，观察员随船值守时段为船舶从弗里曼特尔（Fremantle）离港直至驶近霍巴特（Hobart）的全程。仅在光照、气象及海况条件允许时，观察员方可开展观测工作。通常任一时刻均有2至5名观察员在岗（更多信息可参阅前述鲸类元数据记录）。本次下载资源包含以下内容：一是标注了航迹上已记录磷虾群位置的GIS形状文件（GIS shapefiles）；二是存储观测记录的逗号分隔值（CSV）文件与Excel电子表格文件；三是多张展示船舶航迹与观测磷虾群分布的地图影像。BROKE-West科考航次为2005-3006航季中“极光号”的第3次科考航次，旨在对东经30°至80°海域开展全面的生物学与海洋学综合调查。