RV Investigator Voyage IN2021_V04 ADCP Data

This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2021_V04, titled "Biodiversity Assessment of Australia’s Indian Ocean Territories." The voyage took place between June 30 and July 29, 2021 departing from Darwin (NT) and returning in Hobart (TAS).

Data was collected during in2021_v04 for most of the voyage. The OS75 was turned off whilst in shallower water to prioritise mapping and the OS150 was turned off briefly for mapping around Christmas Island. Data was collected using UHDAS and post-processed using CODAS.
Both the RDI Ocean Surveyor 150kHz ADCP and the RDI Ocean Surveyor 75kHz ADCP were run in narrowband.
Internal triggering was used.
The drop keel was at 2m below the waterline for the duration of the voyage.

See the voyage computing and electronics report for more details regarding data acquisition.

This dataset was processed and then archived within the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC) in Hobart.

本记录详述了从澳大利亚国家海洋设施“调查者号”（RV Investigator）航次IN2021_V04采集的声学多普勒海流剖面仪（Acoustic Doppler Current Profiler, ADCP）数据，该航次主题为《澳大利亚印度洋领地生物多样性评估》。本次航次于2021年6月30日至7月29日执行，从北领地（NT）达尔文港出发，最终返航至塔斯马尼亚州（TAS）霍巴特港。

本次数据采集覆盖该航次的绝大部分航程。在浅水区作业期间，OS75设备被关停以优先开展测绘任务；在圣诞岛周边开展测绘作业时，OS150设备曾短暂关停。数据采集采用UHDAS软件，后处理工作通过CODAS软件完成。

RDI Ocean Surveyor 150kHz与75kHz两款声学多普勒海流剖面仪均以窄带模式运行，且采用内部触发机制。本次航次全程，下放式龙骨均保持在水线以下2米位置。

如需了解数据采集的更多细节，请参阅本航次的计算与电子设备报告。

本数据集已完成处理，并归档于霍巴特的澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）国家海洋馆藏与设施（National Collections and Marine Infrastructure, NCMI）信息与数据中心（Information and Data Centre, IDC）。