標題：AZFP論文：澳大利亞潮汐能候選地點同時進行回聲測深儀和ADCP測量的數據集
Abstract
Interaction uncertainties between tidal energy devices and marine animals have the potential to impede the tidal energy industry as it moves closer towards commercial-scale array installations. Developing standardised environmental impact assessment (EIA) practices would allow for potential impact concerns to the marine environment to be identified and mitigated early during project development. In an effort to help formulate a standardised EIA framework that addresses
knowledge gaps in fish-current interactions at tidal energy candidate sites, Scherelis et al. presented a case study for investigating changes in fish aggregations in response to changing environmental conditions including tidal currents at a tidal energy candidate site in Australia prior to turbine installation. Here, we present the dataset utilised for this study titled “Investigating biophysical linkages at tidal energy candidate sites: a case study for combining environmental assessment and resource characterisation”. The dataset includes tidal current information from an Acoustic Doppler Current Profiler (ADCP), volume backscattering measurements from a four-frequency biological echosounder (Acoustic Zooplankton and Fish Profiler – AZFP) as an indicator for fish biomass, and fish aggregation metrics calculated from volume backscatter in post-processing. ADCP and AZFP were installed on a bottom-mounted mooring and engaged in a concurrent sampling plan for ～2.5 months from December 2018 to February 2019. The mooring was deployed in the Banks Strait, a tidal energy candidate site located in the northeast of Tasmania, Australia, at a location favourable for tidal turbine installations considering current speed, depth, substrate, sediment type and proximity to shore. The ADCP dataset includes current velocity and direction measurements at 1 m vertical and 1-min time intervals. The raw AZFP dataset includes volume backscattering strength collected in 4-s time intervals with a vertical resolution of 0.072 m in raw, and 0.1 m in pre-processed form. Several post-processing
steps were implemented to mitigate changes in background noise due to current speed and wind stress, and to isolate acoustic fish returns from remaining scattering sources. Once isolated, volume backscatter containing fish targets underwent post-processing to determine fish aggregation metrics including density, abundance, centre of mass, dispersion,% water column occupied, evenness, and index for aggregation. Each aggregation metric was then binned by minute matched with corresponding environmental conditions for current speed, shear, temperature, diel stage, and tidal stage. Raw and processed datasets for the AZFP and ADCP are provided. Post-processed data includes the derived fish aggregation metrics along with corresponding environmental conditions. The described datasets are freely available on the Australian Ocean Data Network (AODN).
摘要：
潮汐能裝置和海洋動物之間的相互作用不確定性有可能阻礙潮汐能行業向商業規模陣列裝置邁進。制定標準化的環境影響評估（EIA）實踐將允許在項目開發的早期發現和緩解對海洋環境的潛在影響。為了幫助制定一個標準化的環境影響評價框架，以解決潮汐能候選地點魚流相互作用的知識差距，Scherelis等人提出了一個案例研究，以調查在渦輪機安裝之前，澳大利亞潮汐能候選地魚群對環境條件變化的反應，包括潮汐流。在這里，我們介紹了本研究所使用的數據集，題為“調查潮汐能候選地點的生物物理聯系：結合環境評估和資源特征的案例研究”。該數據集包括來自聲學多普勒海流剖面儀（ADCP）的潮流信息、來自四頻生物回聲測深儀（聲學浮游動物和魚類剖面儀-AZFP）的體積反向散射測量值，作為魚類生物量的指標，以及在后處理中根據體積反向散射計算的魚類聚集指標。ADCP和AZFP安裝在底部安裝的系泊裝置上，并從2018年12月到2019年2月進行了為期約2.5個月的同步采樣計劃。系泊部署在班克斯海峽，這是一個位于澳大利亞塔斯馬尼亞州東北部的潮汐能候選地點，考慮到流速、深度、基質、沉積物類型和靠近海岸的位置，該地點有利于潮汐渦輪機的安裝。ADCP數據集包括1米垂直和1分鐘時間間隔的流速和方向測量值。原始AZFP數據集包括以4-s時間間隔收集的體積后向散射強度，原始垂直分辨率為0.072m，預處理形式為0.1m。實施了幾個后處理步驟，以減輕由于流速和風應力引起的背景噪聲的變化，并將聲學魚類返回與剩余散射源隔離開來。一旦被隔離，包含魚類目標的體積反向散射就會進行后處理，以確定魚類聚集指標，包括密度、豐度、質心、分散度、所占水柱百分比、均勻度和聚集指數。然后，根據當前速度、剪切力、溫度、晝夜階段和潮汐階段的相應環境條件，將每個聚集指標按分鐘進行分類。提供了AZFP和ADCP的原始和處理數據集。后處理數據包括導出的魚類聚集指標以及相應的環境條件。所描述的數據集可在澳大利亞海洋數據網絡（AODN）上免費獲得。
關鍵詞：AZFP 魚類浮游動物聲學剖面儀，漁業聲學、浮游動物，海洋魚類聲學調查，AZFP、ADCP
