Produced Formation Water Discharge from a Production Platform to the North West Shelf. 1995. Marine Survey 152

During September 1995, the Australian Geological Survey Organisation and the Australian Institute of Marine Science took part in a joint survey aboard the 'Lady Basten' to monitor the dispersion, fates and effects of Produced Formation Water (PFW) discharged from the Harriet 'A' production platform on the North West Shelf.

The AGSO component of the work involved using Continuous Geochemical Tracer (CGT) analysis of specific light hydrocarbons (C1-C6, benzene and toluene) to map the shape and extent of the discharged PFW plume in surface waters at 2 m. depth.

Hydrographic parameters including water temperature, dissolved oxygen, pH, salinity and turbidity were also continuously profiled. Four hydrocarbon vertical profiles were completed at various distances from the platform and several surface water samples collected for isotopic analysis. The profIling was conducted at speeds of 2 to 8 knots resulting in a typical data-point spacing of 180 metres. A total of 993 line kilometres of geochemical and hydrographic data were collected during the survey period in a tidal range which varied from 1.5 to 3.0 metres.

1995年9月，澳大利亚地质调查局（Australian Geological Survey Organisation, AGSO）与澳大利亚海洋科学研究所联合搭乘“巴斯滕女士号（Lady Basten）”科考船开展调查，旨在监测西北大陆架哈丽特“A”号生产平台排放的采出地层水（Produced Formation Water, PFW）的扩散、归宿与影响。
本次工作中AGSO承担的任务为：采用连续地球化学示踪剂（Continuous Geochemical Tracer, CGT）分析特定轻烃（C1-C6、苯及甲苯），以绘制2米水深表层水中排放的PFW羽流的形态与覆盖范围。
调查同时连续剖面测量了水温、溶解氧、pH值、盐度与浊度等水文参数。研究人员在距离平台不同位置完成了4组烃类垂直剖面测量，并采集多组表层水样用于同位素分析。本次调查航速维持在2至8节，典型数据点间距为180米。在潮差介于1.5至3.0米的海域内，本次调查共计采集到993测线公里的地球化学与水文数据。