Abstract
Anthropogenic land-derived materials in wastewater have been recognized to influence on the water quality and the marine ecosystem in Osaka Bay and Harima Nada. Towards a rigorous environmental assessment of these two semi-enclosed estuaries, a triple-nested high-resolution oceanic modeling framework based on ROMS is developed to investigate the dispersal and dilution of urban wastewater effluent released from the subsurface nearshore outfall of Tarumi Sewage Treatment Plant near Akashi Strait. The effluent dispersal in the northern Osaka Bay is two-layered and highly reversal in the upper and lower layers due to stratification influenced by freshwater input mainly from Yodo River. The estimated cumulative tracer flux for the four-month period is found to accumulate by about 75% in Osaka Bay.
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Schedule a callMore From: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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