IMOS BA SOOP - Bio Acoustic Data from Australian Wild Tuna's Santo Rocco in the Pacific Ocean from the 1st of May 2012 to the 3rd of May 2012.

This Bio Acoustic data was collected in May 2012 under the IMOS Ship of Opportunity (SOOP) Bio Acoustic (BA) program on Australian Wild Tuna's Santo Rocca (IMOS platform code: LFB13191P).\n\nDeparted: Australia, May 01, 2012\nArrived: \t Australia, May 03, 2012\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.

本生物声学 (Bio Acoustic) 数据集于2012年5月，依托IMOS机会船 (Ship of Opportunity, SOOP) 生物声学 (BA) 计划，在澳大利亚野生金枪鱼公司的圣塔罗卡号（IMOS平台编号：LFB13191P）上采集完成。

起航地：澳大利亚，2012年5月1日
抵达地：澳大利亚，2012年5月3日

生物声学信号可用于解析中层水域猎物类群的分布特征，该类群统称为小型中层游泳生物 (micronekton)，包含小型鱼类、头足类、磷虾与水母等物种。

中层猎物类群构成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、海豹与海鸟等顶级捕食者。

小型中层游泳生物的生物量与空间分布格局，能够反映海洋生态系统结构与功能的宏观模式，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与科研船舶完成，该设备可记录深度达1500米的声学后向散射切片数据。