US-GLOBEC: Broad-Scale Acoustic Measurements of Zooplankton and Nekton in the Georges Bank Region

小行星9313675 作为美国GLOBEC NW Atlantic/Georges Bank研究的一部分，Wiebe博士及其合作者将使用拖曳式下视高频声学系统（以120、420和720 kHz运行）确定Georges Bank上浮游动物和游泳动物种群的大尺度声学分布。 该拖曳系统将部署在乔治银行地区的每月调查，旨在涵盖gadid ichyoplankton的远洋阶段的持续时间。 这些数据将进行分析，以产生估计的空间斑块，相对丰度，和大型浮游动物，微型浮游动物的大小分布，和较大的声音散射。 声学数据将与MOCNESS网收集的大小、频率和分类组成数据进行比较。 这些数据将被用作声学散射模型的输入，以便在没有收集直接生物数据的情况下准确描述回声测深仪数据。 动物密度和大小的声学估计，结合水文（主要是温度），生理和猎物密度数据，可以用来探索目标物种的增长率的空间明确的模型。

9313675 Wiebe As part of the U.S. GLOBEC NW Atlantic/Georges Bank study, Dr. Wiebe and collaborators will determine the broad-scale acoustical distribution of zooplankton and nekton populations on Georges Bank using a towed down-looking high frequently acoustical system (operating at 120, 420 and 720 kHz). The towed system will be deployed on the monthly surveys of the Georges Bank region designed to cover the duration of the pelagic stages of the gadid ichyoplankton. The data will be analyzed to yield estimates of spatial patchiness, relative abundance, and size distribution of macrozooplankton, micronekton, and larger sound scatters. The acoustical data will be compared with size frequency and taxonomic composition data generated from MOCNESS net collections. The data will be used as input into acoustic scattering models for accurate descriptions of echosounder data where direct biological data are not collected. Acoustical estimates on animal density and size, when combined with the hydrographic (temperature primarily), physiological, and prey density data can be used to explore spatially-explicit models of target species growth rates.