A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Studies of ballast water dispersal in Port Valdez, Alaska
AbstractAll oily ballast water from tankers arriving at Valdez, Alaska, is treated prior to discharge into Port Valdez, a northeasterly fjord-like extension of Prince William Sound in south-central Alaska. In addition to specifying the quality and allowable quantity, the permits for this discharge also required field studies of the outfall diffuser system to determine its actual dispersion characteristics under the extremes of oceanographic conditions experienced in Port Valdez. Two dye studies of the diffuser effluent were performed by the University of Alaska Institute of Marine Science to meet this permit requirement. For this diffuser study, Rhodamine WT dye was the effluent tracer and a SeaMarTec Fluorometer/Nephelometer was the detection instrument. The latter is an optical device which, when coupled with conventional STD instrumentation, enabled the rapid acquisition of continuous vertical profiles of salinity, temperature, and dye concentration at many locations surrounding the diffuser where depths ranged from 20 to 150 m. The procedures described herein provided sufficient data to describe the three-dimensional development of the dye plume and to evaluate the diffuser's capability to satisfy the effluent dilution requirements stipulated by the ballast water discharge permits.
Studies of ballast water dispersal in Port Valdez, Alaska
AbstractAll oily ballast water from tankers arriving at Valdez, Alaska, is treated prior to discharge into Port Valdez, a northeasterly fjord-like extension of Prince William Sound in south-central Alaska. In addition to specifying the quality and allowable quantity, the permits for this discharge also required field studies of the outfall diffuser system to determine its actual dispersion characteristics under the extremes of oceanographic conditions experienced in Port Valdez. Two dye studies of the diffuser effluent were performed by the University of Alaska Institute of Marine Science to meet this permit requirement. For this diffuser study, Rhodamine WT dye was the effluent tracer and a SeaMarTec Fluorometer/Nephelometer was the detection instrument. The latter is an optical device which, when coupled with conventional STD instrumentation, enabled the rapid acquisition of continuous vertical profiles of salinity, temperature, and dye concentration at many locations surrounding the diffuser where depths ranged from 20 to 150 m. The procedures described herein provided sufficient data to describe the three-dimensional development of the dye plume and to evaluate the diffuser's capability to satisfy the effluent dilution requirements stipulated by the ballast water discharge permits.
Studies of ballast water dispersal in Port Valdez, Alaska
Colonell, Joseph M. (author)
Applied Ocean Research ; 3 ; 195-199
1981-01-01
5 pages
Article (Journal)
Electronic Resource
English
Port of Milwaukee Onshore Ballast Water Treatment
| British Library Conference Proceedings | 2008