RV Investigator Voyage IN2019_V06 ADCP Data

This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2019_V06, titled: "Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intraseasonal SST variability." The voyage took place from Darwin (NT) to Darwin between October 19 and December 17, 2019.Data was collected during in2019_v06 for the duration of the voyage. Data was collected using UHDAS and post-processed using CODAS.The voyage consisted of two legs, with a port visit on 11 November 2019. The ADCP data for both legs have been processed as one dataset. Leg 1 was 19 October to 11 November 2019, Leg 2 from 11 November to 17 December 2019.The RDI Ocean Surveyor 150kHz ADCP was run in both narrowband and broadband for various sections of the voyage. The RDI Ocean Surveyor 75kHz ADCP was run in narrowband for a section of the voyage. Both transducers were switched off during the port period on 19 October. Both transducers were switched off from 00:45 to 02:07 UTC on 9 October.Internal triggering was used.The drop keel was at 4m extension (10.54m below centre of reference) for leg 1 and 1.19m extension (flush with gondola, 7.93m below centre of reference) for leg 2.The bin sizes for the 150kHz ADCP were changed at various times throughout the voyage to obtain finer data granularity when the depth was shallow.See the voyage computing and electronics reports 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.

本数据集记录了源自海洋国家设施（Marine National Facility）“调查者号”（RV Investigator）科考航次IN2019_V06的声学多普勒海流剖面仪（Acoustic Doppler Current Profiler，ADCP）数据，该航次主题为“热带大气对流、生源排放、海洋混合及季内海表温度变率形成过程观测”。本次航次于2019年10月19日至12月17日期间开展，往返于北领地达尔文港。数据于该航次全程采集，采用UHDAS系统完成数据采集，后通过CODAS软件进行后处理。本航次分为两个航段，2019年11月11日曾靠港休整，两段航次的ADCP数据已合并为单数据集；其中航段一为2019年10月19日至11月11日，航段二为2019年11月11日至12月17日。本航次不同区段分别采用RDI Ocean Surveyor 150kHz ADCP的窄带与宽带工作模式，而RDI Ocean Surveyor 75kHz ADCP仅在部分航段采用窄带模式工作。2019年10月19日靠港期间，两台换能器均处于关闭状态；此外，2019年10月9日UTC时间00:45至02:07期间，两台换能器也均被关闭。数据采集采用内部触发模式。航段一的下放龙骨伸出长度为4米（参考中心下方10.54米），航段二的下放龙骨伸出长度为1.19米（与吊舱齐平，参考中心下方7.93米）。为在浅水区获得更高的数据分辨率，150kHz ADCP的采样层厚在航次全程中多次调整。有关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（O&A）信息与数据中心（IDC）。