Manly Hydraulics Laboratory - Eden Offshore Wave Data Buoy (WAVEEDN)

This is a metadata record for the Eden offshore wave data buoy (station code WAVEEDN) operated by Manly Hydraulics Laboratory (MHL), NSW Office of Environment and Heritage (OEH). The buoy is moored off Eden at a water depth of approximately 100m.This metadata record includes a down-loadable .pdf summary document which includes a map with numbered deployment locations and a listing of deployment number, location, water depth and deployment period.Data from February 1978 to December 2011 was gathered by the Waverider system developed by the Dutch company, Datawell. The Waverider system uses an accelerometer mounted in a loose tethered buoy (0.7 or 0.9m in diameter) to measure the vertical accelerations of the buoy as it moves with the water surface. The accelerations are integrated twice within the buoy and the displacement signal so obtained is then transmitted to a shore station where it is processed to provide wave data statistics. In December 2011, the station was upgraded with a Datawell Directional Waverider buoy. The Directional Waverider buoy utilises a heave-pitch-roll sensor, two fixed X and Y accelerometers and a three axis fluxgate compass to measure both vertical and horizontal motion. An on-board processor converts the buoy motion to three orthogonal (vertical, north-south, east-west) translation signals that are transmitted to the shore station. The directional spectrum is also routinely transmitted to the receiving station for further processing. This buoy also collects sea surface temperature (SST) data from thermistors that are mounted inside the hull of the buoys, at the base of the buoy about 0.5m below the water surface. The wave and SST data are stored on the receiving station PC before routine transfer to Manly Hydraulics Laboratory via email.

本数据集为新南威尔士州环境与遗产办公室（NSW Office of Environment and Heritage, OEH）下属曼利水力学实验室（Manly Hydraulics Laboratory, MHL）运维的伊登近海波浪数据浮标（站代码WAVEEDN）的元数据记录。该浮标锚泊于伊登近海，作业水深约100米。本元数据记录附带可下载的PDF格式摘要文档，其中包含标注部署点位编号的地图，以及部署编号、部署位置、作业水深与部署周期的明细清单。1978年2月至2011年12月的观测数据由荷兰企业Datawell研发的Waverider系统采集。Waverider系统通过安装在松散系泊浮标（直径0.7或0.9米）内的加速度计，采集浮标随水面运动时的垂直加速度信号；浮标内部会对加速度信号进行两次积分，得到位移信号后传输至岸站，经岸站处理后生成波浪数据统计量。2011年12月，该站点升级为Datawell定向式Waverider浮标。该定向式浮标搭载垂荡-俯仰-横滚传感器、两台固定安装的X轴与Y轴加速度计以及三轴磁通门罗盘，可同步采集垂直与水平运动数据；浮载处理器将浮标的运动转换为三组正交位移信号（垂直、南北向、东西向）并传输至岸站，同时定向谱数据也会常规传输至接收站以供后续处理。该浮标还通过安装在浮标舱体内部、距水面约0.5米的浮标基座处的热敏电阻，采集海表温度（sea surface temperature, SST）数据。波浪数据与SST数据会先存储于接收站的个人计算机中，随后通过电子邮件定期传输至曼利水力学实验室。