WAMSI Node 6.2 - The Impact of tides and internal waves on offshore engineering - field measurement program - 70 km NW of North Rankin platform

The IWAG (Internal Wave Boundary layer Generation) instrument was deployed from October 23, 2008 to November 11th, 2008, on the NWS offshore from North Rankin A (NRA) in 420 metres of water. The field experiment involved the deployment of 29 moored Seabird temperature sensors (SBE39), 1 Seabird conductivity-temperature-pressure sensor (SBE37-CTD), as well as 5 Nortek Acoustic Doppler Velocity meters (ADV) to observe differences in BBL properties during the 14 day spring-neap tidal cycle. The 5 ADV’s measure velocities at a point in space in all three spatial directions and pressure at frequencies up to 64Hz. The ADVs were each synchronized with a co-located temperature sensor, permitting the calculation of turbulent heat fluxes in addition to a multitude of other turbulent properties.Vertical extent was between 390 metres and 420 metres below Mean Sea Level.

本数据集所用的IWAG（内波边界层生成，Internal Wave Boundary layer Generation）仪器，于2008年10月23日至2008年11月11日期间，部署于西北陆架（North West Shelf, NWS）北兰金A号（North Rankin A, NRA）周边水深420米的海域。本次野外实验共部署29台海鸟（Seabird）公司SBE39型锚定温度传感器、1台海鸟SBE37-CTD型温盐深传感器，以及5台诺泰克（Nortek）声学多普勒流速仪（Acoustic Doppler Velocity meter, ADV），用于观测14天大小潮周期内底边界层（Bottom Boundary Layer, BBL）的特性差异。5台ADV可在空间单点测量三维流速，并以最高64Hz的频率采集压力数据；所有ADV均与就近部署的温度传感器同步，因此除可计算多项湍流特性外，还可求解湍流热通量。本次观测的垂直覆盖范围介于平均海平面以下390米至420米之间。