Preliminary survey of the Keep River, Northern Territory

A survey of the Keep River, Northern Terrritory was undertaken on the 17th and 18th October 2001. On the first day, 5 CTD casts were done between 0935 and 1150 hrs at the gauging station. CTD casts were also done at a further 3 stations along the river. Floc photographs were taken at CTD sites. A CTD, logging at 1 min intervals was deployed on the second day to collect data for the rising tide.A total of 20 water samples were collected from the CTD sites and analysed for NH4, PO4, NO2+NO3, NO2, and Si. This preliminary survey was undertaken in response to concerns over the possible effects of the Ord River Irrigation Area Stage 2 (M2 Supply Channel) on the Keep River. The project area included the lower reaches of the Keep River and Sandy Creek catchments and a transfer of water from the Ord River to the Keep River catchment was planned. At the time, the estuarine dynamics of the Keep River were largely unknown. No further work was done by AIMS in this river system.

2001年10月17日至18日，研究团队针对北领地（Northern Territory）吉普河（Keep River）开展了一项预调查。首日（10月17日），研究团队于0935至1150时段内在水文测站开展了5次温盐深仪（CTD）测站观测；此外，沿河道在另外3个站位实施了CTD测站作业，并在各CTD测站位点拍摄了絮凝体照片。次日（10月18日），部署了一台以1分钟为间隔进行数据记录的CTD设备，用于采集涨潮过程的观测数据。研究人员从各CTD测站位点共采集20份水样，针对铵态氮（NH4）、磷酸盐（PO4）、亚硝酸盐+硝酸盐（NO2+NO3）、亚硝酸盐（NO2）及硅酸盐（Si）开展了分析检测。本次预调查的启动，源于外界对奥德河（Ord River）第二阶段灌溉区（Ord River Irrigation Area Stage 2，M2 Supply Channel）可能对吉普河造成影响的担忧。本次调查涉及的项目区域涵盖吉普河下游河段及桑迪溪（Sandy Creek）集水区，同时规划了从奥德河向吉普河集水区调水的方案。彼时，吉普河的河口动力过程基本处于未知状态。AIMS未再针对该河流水系开展相关研究工作。