River runoff is an important driver of many physical, biological, and geochemical processes in 12 coastal shelf sea areas. The river-estuary-sea continuum represents a variety complex 13 interactions between the terrestrial freshwater discharge ocean water. estuaries are areas 14where initially interacts with seawater. related estuarine mixing 15 define source properties for river plumes, which...

This study focused on the influence of local-scale environmental factors on key metrics of fish community structure and function at Guanabara Bay, an estuarine system that differs from all other south-western Atlantic estuaries due to the influence of an annual low-intensity upwelling event during late spring and summer, between November and March, when a warm rainy climate prevails. The spatia...

The effect of estuarine circulation and tidal trapping on mixing in the Hudson Estuary is investigated by a numerical model simulation of a tracer release. The data set used in this study was obtained from a large-scale SF6 tracer release experiment conducted during July/August 2001. It consists of over 2,000 measurements taken over a period of two weeks and distance of 110 km with a typical re...

A tidal bore is a surge of water propagating upstream as the tidal flow turns to rising into an estuary with a tidal range larger than 5 to 6 m and a bathymetry that amplifies the tidal wave. The bore front is a shock characterised by a singularity of the free-surface and pressure and velocity fields. This study aims to characterise the tidal bore propagation and the induced turbulent mixing un...

Abstract The mixing of river plumes into the coastal ocean influences fate river-borne tracers over inner-shelf, though relative importance mechanisms under different environmental conditions is not fully understood. In particular, contribution to plume from bottom generated shear stresses, referred as tidal mixing, rarely considered important frontal and stratified (interfacial) in surface adv...

Abstract Based on a comprehensive study of the Tina Mayor estuary, conceptual morphosedimentary model is proposed for one best-preserved limestone sectors Iberian Peninsula. This mesotidal and rock-bounded estuary consists significant proportion quartzitic gravel fractions, which distinctive compared to other nearby estuaries Northwest Spain Fluvial discharges allow high coarse fraction inputs ...

In order to estimate the fluxes of Ra isotopes, we measured 224Ra, 226Ra, and 228Ra activities in the Ulsan Bay mixing zone. The convex upwards curvature of the plot of Ra isotope activities versus salinity for the mixing zone suggests that Ra isotopes are supplied from particles entering the mixing zone from both the river and bottom sediments. This addition increases the estuarine flux of 226...

To explore the spatial and temporal variations in salinity suspended-sediment concentration Danshuei River estuary of northern Taiwan, two intensive field surveys were conducted July 2016 2019 to assign high- low-flow conditions, respectively. According analysis tidal characteristics, duration during ebb tide was longer than that flood tide, while maximum discharge higher discharge, causing occ...

Water quality parameters from 2000 to 2020 were used identify the spatial and temporal sulfate variations in estuaries of northwestern Gulf Mexico. Sulfate enrichment relative conservative mixing was found be associated with a low river discharge period 2012 2014 all estuaries. Based on reaction stoichiometry, sedimentary sulfide oxidation holds significant potential for reducing alkalinity est...