RV Investigator Voyage IN2018_V08 ADCP Data

This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2018_V08, titled: "The Balleny mantle plume: key role in Tasmania-Antarctic breakup?" The voyage took place from Hobart (TAS) to Hobart between December 27, 2018 and January 10, 2019. Data was collected during in2018_v08 for the entire voyage. Acquisition of data was through UHDAS and this data was post-processed in CODAS.Data was collected with the RDI Ocean Surveyor 75kHz and 150kHz ADCP, which were run in narrow band mode with 16m and 8m bins respectively. Bottom tracking was used while on leaving the Tasman Peninsula while on the continental shelf and was turned off for the remainder of the voyage after leaving the shelf.Internal triggering was used as the focus of this voyage was to collect current data and external triggering was found to be unstable on previous voyages.Port drop keel was flush with gondola for the majority of the voyage and was at 2m for the duration data was being acquired.See the voyage computing and instrumentation report for more details regarding data acquisition.This dataset was processed and then archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart.

本记录描述了从国家海洋设施“调查者号”科考船（RV Investigator）IN2018_V08航次采集的声学多普勒流速剖面仪（ADCP）数据，该航次标题为：“巴伦尼地幔柱：在塔斯马尼亚-南极分裂中的关键作用？”。该航次于2018年12月27日至2019年1月10日期间从霍巴特（塔斯马尼亚州，TAS）出发并返回霍巴特。IN2018_V08航次全程均采集了数据。数据通过UHDAS采集，并在CODAS中进行后处理。数据由RDI海洋测量仪75kHz和150kHz ADCP采集，二者分别以窄带模式运行，深度区间为16米和8米。离开塔斯曼半岛期间（位于大陆架上）启用了底跟踪功能，离开大陆架后，航次剩余时间内该功能关闭。由于本次航次的重点是采集海流数据，且此前航次中发现外部触发不稳定，因此采用了内部触发方式。航次大部分时间内左舷投放式龙骨与吊舱齐平，数据采集期间龙骨下放至2米深度。有关数据采集的更多细节，请参见航次计算与仪器报告。该数据集经处理后，存档于位于霍巴特的澳大利亚联邦科学与工业研究组织（CSIRO）海洋与大气部（O&A）信息与数据中心（IDC）。