TECHNICAL FEASIBILITY ANALYSIS OF SUBMARINE PIPELINES FOR INTAKE OF SEA WATER WITH HIGH TOTAL SUSPENDED SEDIMENT LOADS

2011 ◽  
Vol 17 (2) ◽  
pp. 99-109 ◽  
Author(s):  
S. Neelamani ◽  
F. Al-Hulail
Keyword(s):  
Suspended Sediment ◽  
Sea Water ◽  
Feasibility Analysis ◽  
Total Suspended Sediment ◽  
Technical Feasibility ◽  
Sediment Loads

scholarly journals Impact of hydropower dam on total suspended sediment and total organic nitrogen fluxes of the Red River (Vietnam)

2020 ◽  
Vol 383 ◽  
pp. 367-374
Author(s):  
Nhu Da Le ◽  
Thi Phuong Quynh Le ◽  
Thi Xuan Binh Phung ◽  
Thi Thuy Duong ◽  
Orange Didier
Keyword(s):  
Suspended Sediment ◽  
Organic Nitrogen ◽  
Red River ◽  
Total Suspended Sediment ◽  
Wet Season ◽  
Annual Average ◽  
Total Organic Nitrogen ◽  
Sediment Loads ◽  
The Relationship ◽  
Experimental Equation

Abstract. The Red River is a typical example of the Southeast Asian rivers, which has been strongly affected by human activities. This paper analyses the change of total suspended sediment (TSS) load of the Red River from 1960 to 2015 in which numerous new dams in both China and Vietnam have been constructed. A strong decrease of TSS load of the whole Red River (from 79±26×106 t yr−1 in 1960s to 6±1×106 t yr−1 in 2010s) allocated to the dam impoundments in spite of population and deforestation increase. Base on the experimental equation describing the relationship between TSS and total organic nitrogen (TON) concentrations, and on the available data of TSS concentration and river discharge, the longterm TON concentrations and fluxes were calculated for the three tributaries and the whole Red River. The annual average of TON concentrations spatially varied from 0.41 to 3.19 mg L−1, averaging 0.98 mg L−1 for the whole period; the lowest was found for the Da River where the new dams have been impounded. The highest TON concentrations and fluxes occurred in the wet season in relationship with the highest sediment loads and river discharges. The riverine TON fluxes transferred to estuary significantly decreased from 141×103±38×103 t yr−1 (equivalent to 902±247 kg km−2 yr−1) in 1960s to 32×103±5×103 t yr−1 (equivalent to 207±35 kg km−2 yr−1) in 2010s. The TSS flux decrease has driven a clear reduction of associated elements like nitrogen, which let to hypothesis a change in biogeochemical processes in the coastal zone.

Statistical power of detecting trends in total suspended sediment loads to the Great Barrier Reef

2012 ◽  
Vol 65 (4-9) ◽  
pp. 203-209 ◽  
Author(s):  
Ross Darnell ◽  
Brent Henderson ◽  
Frederieke J. Kroon ◽  
Petra Kuhnert
Keyword(s):  
Great Barrier Reef ◽  
Suspended Sediment ◽  
Statistical Power ◽  
Barrier Reef ◽  
Total Suspended Sediment ◽  
Sediment Loads

scholarly journals Response of Total Suspended Sediment and Chlorophyll-a Concentration to Late Autumn Typhoon Events in the Northwestern South China Sea

2021 ◽  
Vol 13 (15) ◽  
pp. 2863
Author(s):  
Junyi Li ◽  
Huiyuan Zheng ◽  
Lingling Xie ◽  
Quanan Zheng ◽  
Zheng Ling ◽  
...  
Keyword(s):  
South China Sea ◽  
Continental Shelf ◽  
Suspended Sediment ◽  
Chlorophyll A ◽  
South China ◽  
Total Suspended Sediment ◽  
Offshore Area ◽  
Chl A ◽  
Late Autumn ◽  
China Sea

Strong typhoon winds enhance turbulent mixing, which induces sediment to resuspend and to promote chlorophyll-a (Chl-a) blooms in the continental shelf areas. In this study, we find limited Chl-a responses to three late autumn typhoons (typhoon Nesat, Mujigae and Khanun) in the northwestern South China Sea (NWSCS) using satellite observations. In climatology, the Chl-a and total suspended sediment (TSS) concentrations are high all year round with higher value in autumn in the offshore area of the NWSCS. After the typhoon passage, the Chl-a concentration increases slightly (23%), while even TSS enhances by 280% on the wide continental shelf of the NWSCS. However, in the southern area, located approximately 100 km from the typhoon tracks, both TSS and Chl-a concentrations increase 160% and 150% after typhoon passage, respectively. In the deeper area, the increased TSS concentration is responsible for the considerable increase of the Chl-a. An empirical analysis is applied to the data, which reveals the TSS and Chl-a processes during typhoon events. The results of this study suggest a different mechanism for Chl-a concentration increase and thus contribute toward further evaluation of typhoon-induced biological responses.

scholarly journals Analyses of suspended sediment loads in Slovenian rivers

2016 ◽  
Vol 61 (6) ◽  
pp. 1094-1108 ◽  
Author(s):  
Nejc Bezak ◽  
Mojca Šraj ◽  
Matjaž Mikoš
Keyword(s):  
Suspended Sediment ◽  
Sediment Loads
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