Buoyant plume dispersion in a coastal environment: evolving plume structure and dynamics

Geostatistical Prediction of Ocean Outfall Plume Characteristics Based on an Autonomous Underwater Vehicle

“…When taking the kriging variance into account, in the 2m map the plume may be identified by the regions where salinity is less than 35.48psu and in the 4m map by the regions where salinity is less than 35.57psu. The plume exhibits a considerably more complex structure than the compact shape of the classical picture of the buoyant plume and is as patchy as in previous studies [4-6]. The small plume-related anomalies in the local salinity of Figures 9 and 10 are evidence of the rapid mixing process.…”

Geostatistical Prediction of Ocean Outfall Plume Characteristics Based on an Autonomous Underwater Vehicle

“…When taking the kriging variance into account, in the 2m map the plume may be identified by the regions where salinity is less than 35.48psu and in the 4m map by the regions where salinity is less than 35.57psu. The plume exhibits a considerably more complex structure than the compact shape of the classical picture of the buoyant plume and is as patchy as in previous studies [4-6]. The small plume-related anomalies in the local salinity of Figures 9 and 10 are evidence of the rapid mixing process.…”

Environmental Impact Assessment and Management of Sewage Outfall Discharges Using AUV'S

“…Vertical resolution varied along the mission due to the influence on the vehicle navigation of natural currents but was almost always between 1-2 m (vertical resolution is defined as the vertical distance between points in the water column that are sampled approximately at the same (X,Y) location but at consecutive depths, i.e., on successive layers). Comparing to other field studies (Washburn et al, 1992;Wu et al, 1994;Petrenko et al, 1998) this resolution corresponds to a huge improvement in plume tracking surveys. Although the position estimate, provided by the navigation system, is accurate enough for the guidance and control of the AUV, it is not well suited for spatially locating the data collected.…”

Marine spatial planning makes room for offshore aquaculture in crowded coastal waters

“…Lastly, we limited aquaculture development from the vicinity of offshore, subsurface treated wastewater effluent outfalls and major river mouths (Supplementary Data 1 ; Fig. 1a ), in accordance with current water quality regulations 28 , by excluding sites containing outfalls or river mouths, as well as the eight immediately adjacent sites, based on estimates from the region of the average dilution and dispersal distances of wastewater and stormwater runoff plumes 57 – 61 . Lastly, for each aquaculture type, sites with negative value (NPV and annuity) were assumed to be undevelopable.…”

Geostatistical Prediction of Ocean Outfall Plume Characteristics Based on an Autonomous Underwater Vehicle

“…When taking the kriging variance into account, in the 2m map the plume may be identified by the regions where salinity is less than 35.48psu and in the 4m map by the regions where salinity is less than 35.57psu. The plume exhibits a considerably more complex structure than the compact shape of the classical picture of the buoyant plume and is as patchy as in previous studies [4-6]. The small plume-related anomalies in the local salinity of Figures 9 and 10 are evidence of the rapid mixing process.…”

Environmental Impact Assessment and Management of Sewage Outfall Discharges Using AUV'S

“…Vertical resolution varied along the mission due to the influence on the vehicle navigation of natural currents but was almost always between 1-2 m (vertical resolution is defined as the vertical distance between points in the water column that are sampled approximately at the same (X,Y) location but at consecutive depths, i.e., on successive layers). Comparing to other field studies (Washburn et al, 1992;Wu et al, 1994;Petrenko et al, 1998) this resolution corresponds to a huge improvement in plume tracking surveys. Although the position estimate, provided by the navigation system, is accurate enough for the guidance and control of the AUV, it is not well suited for spatially locating the data collected.…”

Marine spatial planning makes room for offshore aquaculture in crowded coastal waters

“…Lastly, we limited aquaculture development from the vicinity of offshore, subsurface treated wastewater effluent outfalls and major river mouths (Supplementary Data 1 ; Fig. 1a ), in accordance with current water quality regulations 28 , by excluding sites containing outfalls or river mouths, as well as the eight immediately adjacent sites, based on estimates from the region of the average dilution and dispersal distances of wastewater and stormwater runoff plumes 57 – 61 . Lastly, for each aquaculture type, sites with negative value (NPV and annuity) were assumed to be undevelopable.…”

Geostatistical Prediction of Ocean Outfall Plume Characteristics Based on an Autonomous Underwater Vehicle

“…When taking the kriging variance into account, in the 2m map the plume may be identified by the regions where salinity is less than 35.48psu and in the 4m map by the regions where salinity is less than 35.57psu. The plume exhibits a considerably more complex structure than the compact shape of the classical picture of the buoyant plume and is as patchy as in previous studies [4-6]. The small plume-related anomalies in the local salinity of Figures 9 and 10 are evidence of the rapid mixing process.…”

Environmental Impact Assessment and Management of Sewage Outfall Discharges Using AUV'S

“…Vertical resolution varied along the mission due to the influence on the vehicle navigation of natural currents but was almost always between 1-2 m (vertical resolution is defined as the vertical distance between points in the water column that are sampled approximately at the same (X,Y) location but at consecutive depths, i.e., on successive layers). Comparing to other field studies (Washburn et al, 1992;Wu et al, 1994;Petrenko et al, 1998) this resolution corresponds to a huge improvement in plume tracking surveys. Although the position estimate, provided by the navigation system, is accurate enough for the guidance and control of the AUV, it is not well suited for spatially locating the data collected.…”

Marine spatial planning makes room for offshore aquaculture in crowded coastal waters

“…Lastly, we limited aquaculture development from the vicinity of offshore, subsurface treated wastewater effluent outfalls and major river mouths (Supplementary Data 1 ; Fig. 1a ), in accordance with current water quality regulations 28 , by excluding sites containing outfalls or river mouths, as well as the eight immediately adjacent sites, based on estimates from the region of the average dilution and dispersal distances of wastewater and stormwater runoff plumes 57 – 61 . Lastly, for each aquaculture type, sites with negative value (NPV and annuity) were assumed to be undevelopable.…”