Manly Hydraulics Laboratory - Batemans Bay Offshore Wave Data Buoy (WAVEBAB)

This is a metadata record for the Batemans Bay offshore wave data buoy (station code WAVEBAB) operated by Manly Hydraulics Laboratory (MHL), NSW Office of Environment and Heritage (OEH). The buoy is moored off Batemans Bay at a water depth of approximately 75m. 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 May 1986 to February 2001 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 February 2001, 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局（NSW Office of Environment and Heritage, OEH）下属曼利水力学实验室（Manly Hydraulics Laboratory, MHL）运营的贝特曼斯湾近海波浪浮标（站点代号WAVEBAB）的元数据记录。该浮标锚泊于贝特曼斯湾外海域，水深约75米。 本元数据记录附带可下载的PDF汇总文档，其中包含标注有序号部署点位的地图，以及部署编号、部署位置、水深与部署周期的明细列表。 1986年5月至2001年2月期间的观测数据，由荷兰企业Datawell研发的Waverider系统采集。该系统通过安装于松散系泊浮标（直径0.7米或0.9米）内的加速度计，采集浮标随水面运动产生的垂直加速度信号。浮标内部对加速度信号进行两次积分，得到位移信号后传输至岸基站点，经处理后生成波浪数据统计结果。 2001年2月，该站点升级为Datawell定向Waverider浮标。该定向Waverider浮标搭载垂荡-纵倾-横摇传感器、两组固定X/Y轴加速度计与三轴磁通门罗盘，可同步采集垂直与水平运动数据。机载处理器将浮标运动转换为三个正交方向（垂直、南北向、东西向）的平移信号，传输至岸基接收站点。定向频谱也会常规传输至接收站点以供进一步处理。该浮标还通过安装于浮标船体内部、距水面约0.5米的热敏电阻，采集海表温度（Sea Surface Temperature, SST）数据。波浪与海表温度数据先存储于接收站个人计算机中，后续通过电子邮件例行传输至曼利水力学实验室。