IMOS BA SOOP - Bio Acoustic Data from Sealord F.V. Janas in the Tasman Sea from the 26th of August 2009 to the 31st of August 2009.

This Bio Acoustic data was collected in August 2009 under the IMOS Ship of Opportunity (SOOP) Bio Acoustic (BA) program on Sealord F.V. Janas (IMOS platform code: ZMTW).\n\nDeparted: Hobart, Australia, August 26, 2009\nArrived: \tNew Zealand, August 31, 2009\n\nBio acoustic signals allow understanding how mid-water prey species (known collectively as micronekton) such as small fish, squid, krill and jellyfish are distributed. \n\nMid-water prey form the core of the ocean food web, transferring energy from primary producers at the ocean surface to top predators such as tunas, billfish, sharks, seals and seabirds.The mass and distribution of micronekton reflects broad-scale patterns in the structure and function of the ocean, as well as the dynamics of marine ecosystems. \n\nAcoustic mapping is done from fishing and scientific vessels that are equipped with scientifically-calibrated 38 kHz digital echo-sounders that record a slice of acoustic backscatter to a depth of 1500 meters.

此生物声学（Bio Acoustic）数据采集于2009年8月，采集工作依托集成海洋观测系统（Integrated Marine Observing System, IMOS）机会船（Ship of Opportunity, SOOP）生物声学（Bio Acoustic, BA）项目开展，作业平台为Sealord F.V. Janas号（IMOS平台代码：ZMTW）。

起航地点：澳大利亚霍巴特，2009年8月26日
抵达地点：新西兰，2009年8月31日

生物声学信号可用于解析中层猎物种群（统称为小型游泳动物（micronekton））的分布格局，涵盖小型鱼类、鱿鱼、磷虾与水母等类群。

中层猎物是海洋食物网的核心环节，可将能量从海洋表层的初级生产者传递至金枪鱼、旗鱼、鲨鱼、海豹及海鸟等顶级捕食者。

小型游泳动物的生物量与分布格局，能够反映海洋生态系统结构与功能的宏观规律，以及海洋生态系统的动态变化过程。

声学测绘工作由配备经科学校准的38 kHz数字回声测深仪的捕捞及科研船舶完成，该设备可记录深度达1500米的声学后向散射切片数据。