IMOS BA SOOP - Bio Acoustic Data from Sealord F.V. Rehua in the Tasman Sea from the 13th of August 2010 to the 17th of August 2010.

This Bio Acoustic data was collected in August 2010 under the IMOS Ship of Opportunity (SOOP) Bio Acoustic (BA) program on Sealord F.V. Rehua (IMOS platform code: ZMRE).

Departed: Australia, August 13, 2010
Arrived: New Zealand, August 17, 2010

Bio acoustic signals allow understanding how mid-water prey species (known collectively as micronekton) such as small fish, squid, krill and jellyfish are distributed.

Mid-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.

Acoustic 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2010年8月采集完成，依托综合海洋观测系统（Integrated Marine Observing System, IMOS）的机会船舶（Ship of Opportunity, SOOP）生物声学（BA）项目，搭载于"Sealord F.V. Rehua"号渔船（IMOS平台代码：ZMRE）。
出发地：澳大利亚，2010年8月13日
抵达地：新西兰，2010年8月17日

生物声学信号可用于解析中层水域猎物类群（统称为小型中层游泳生物（micronekton），即小型鱼类、头足类、磷虾及水母等）的分布格局。

中层猎物类群是海洋食物网的核心组成部分，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。小型中层游泳生物（micronekton）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模式，以及海洋生态系统的动态变化过程。

本次声学测绘作业由配备经过科学校准的38 kHz数字回声测深仪的捕捞及科研船舶完成，该设备可记录至1500米水深的声学后向散射数据切片。