Parent record: Vertical coherence of currents in Jervis Bay: Summer deployment of an Acoustic Doppler Current Profiler (ADCP)

该记录描述了由国防部、CSIRO和澳大利亚国防学院(ADFA)开展的“杰维斯湾基线研究”项目的组成部分。该项目的最初目标是在六周的时间里获得杰维斯湾的海流和风观测，以便详细说明风力驱动的环流，并提供一个数据集，以便与同时进行的数值模拟工作进行比较。然而，在最初的实验之后，人们清楚地发现，海湾中存在着重要的洋流，而不仅仅是与直接风强迫有关。因此，必须通过测量程序和数据分析以及通过数值模拟来研究驱动流动的替代机制。结果是一系列大约六个不同的实验，旨在定义海湾周围和通过海湾入口处的水循环，了解驱动洋流的过程，并调查层化对洋流性质的影响。<br/> <br/> 这六项试验中的第四项涉及夏季部署停泊在杰维斯湾(35°05‘S，东经150°44’)中部的声学多普勒海流剖面仪。ADCP测量水在整个水柱中流动的速度。固定在海底的它不仅可以测量海底的水流速度，而且可以等间隔地测量一直到水面的水流速度。在这项实验中，ADCP以框架形式系泊在海床上，传感器俯瞰海床上方约0.5米。<br/> <br/> 在1990年12月13日至1991年1月15日的夏季部署中，ADCP设置了15分钟的采样间隔，并在1米深的海槽上测量了海流。箱号和海流是指海床以上的高度(由于潮汐和大气压力在定义水深方面存在不确定性)。因此，1号仓的中心位置在传感器表面上方1.5米或海床上方2.0米。2号仓位于海床上方3米处，3号仓位于4米处，以此类推。<br/> <br/> 由于这是父记录，因此没有数据可供下载。可通过该记录获得概述与该项目有关的元数据记录的结构和等级的pdf。还可以获得一份已出版的工作论文的pdf文件，该文件记录了这项实验和结果。只有一条辅助记录与该父项直接相关，通过该记录提供数据(参见层次树)：<br/> 30d0a700-1fc2-11dd-a7e7-00188b4c0af8

This record describes components of the 'Jervis Bay Baseline Studies' project conducted by the Department of Defence, CSIRO and Australian Defence Force Academy (ADFA). The initial aims of the project were to obtain current and wind observations from Jervis bay over a six week period in order to detail the wind driven circulation and provide a data set for comparison with the numerical modelling work being simultaneously undertaken. However, after this initial experiment it became clear that there were significant currents in the bay that are not simply related to direct wind forcing. Therefore, alternative mechanisms for driving the flow had to be investigated, through the measurement programs and data analysis, as well as through numerical modelling. The result was a series of approximately six separate experiments aiming to define the water circulation around the bay and through the bay entrance, to gain an understanding of the processes that drive the currents, and to investigate the influence of stratification on the nature of the currents.<br /> <br /> The fourth of these six experiments involved the summer deployment of an Acoustic Doppler Current Profiler (ADCP), moored in the central part of Jervis Bay (35o 05'S, 150o 44'E). An ADCP measures how fast water is moving across an entire water column. Anchored to the seafloor it can measure current speed not just at the bottom, but also at equal intervals all the way up to the surface. For this experiment, the ADCP was moored on the seabed, in a frame, with sensors looking upwards and approximately 0.5m above the seabed. <br /> <br /> Over the summer deployment, 13th December 1990 to 15th January 1991, the ADCP was set-up with a 15 minute sampling interval and currents were measured over 1m depth bins. Bin numbers and currents are referenced as a height above the seabed (due to the uncertainty in defining water depth because of tides and air pressure). As such Bin #1 is centered at 1.5m above the transducer face or 2.0m above the seabed. Bin #2 is centered at 3m above the seabed, Bin #3 at 4m and so on.<br /> <br /> As this is a parent record, no data is available to download. A pdf outlining the structure and hierarchy of metadata records relating to this project is available through this record. Also available is a pdf of a published working paper documenting this experiment and the results. There is only one subsiduary records that directly relates to this parent, through which the data is provided (see hierarchical tree):<br /> 30d0a700-1fc2-11dd-a7e7-00188b4c0af8