Tide Gauge Records, Heard Island 1997

Tides were measured using a portable pressure transducer secured just below low water line. A 22 hour record was obtained. A connection was made to the local Pageos benchmark by leveling and a 2 hour GPS observation.Additionally, the National Tidal Centre also has tidal data from Heard Island for 1948, 1980 and from 1986-1987. Documentation dated 2001-03-07Heard Island Tide Gauge.A Platypus Engineering tide gauge was deployed in a heavy steel tetrahedral mooring in Atlas Cove in 1993.Two attempts have been made to recover the gauge without success.In March 1997 a temporary tide gauge was used to obtain a 22 hour record.A rock bolt was placed in the rock close to the deployment site and a connection was made to the Pageos Site by a 2 hour GPS observation. A level and staff was used to measure the height of the temporary gauge relative to the BM (AUS258).From these observations an approximate MSL can be found.Some further information about the data can be found in the download file.

本次潮位观测采用固定于低水位线下方的便携式压力式潮位传感器（portable pressure transducer）开展，获取了一段时长22小时的观测记录。通过水准测量与2小时GPS观测，将测区联测至本地Pageos基准点。此外，国家潮汐中心还留存有赫德岛1948年、1980年以及1986年至1987年的潮汐观测数据。相关文档落款日期为2001年3月7日，题为《赫德岛潮位计》（Heard Island Tide Gauge）。1993年，鸭嘴兽工程（Platypus Engineering）公司生产的潮位计被部署于阿特拉斯湾（Atlas Cove）的重型钢制四面体锚泊设施中。曾两次尝试回收该潮位计，但均未成功。1997年3月，采用临时潮位计获取了一段22小时的观测记录。在该部署点位附近的岩体上安装了岩石锚杆，通过2小时的GPS观测联测至Pageos测区基准点；使用水准仪及水准标尺测定了临时潮位计相对于基准点BM（AUS258）的高程。基于上述观测数据，可推算得到近似平均海平面（Mean Sea Level, MSL）。有关该数据集的更多详细信息可在下载文件中查阅。