Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Il Won Seo"'
Publikováno v:
Water, Vol 16, Iss 9, p 1275 (2024)
Remote sensing (RS) is often employed to estimate suspended sediment concentration (SSC) in rivers, and the availability of hyperspectral imagery enhances the effectiveness of RS-based water quality monitoring due to its high spectral resolution. Yet
Externí odkaz:
https://doaj.org/article/73f72805f16044468438731fcd586cc8
Publikováno v:
Water, Vol 16, Iss 2, p 365 (2024)
The dispersion coefficients are crucial in understanding the spreading of pollutant clouds in river flows, particularly in the context of the depth-averaged two-dimensional (2D) advection–dispersion equation (ADE). Traditionally, the 2D stream-tube
Externí odkaz:
https://doaj.org/article/9e5bf23d69aa4cb39310e79234b268cd
Publikováno v:
Water, Vol 15, Iss 20, p 3587 (2023)
In this study, a vulnerability index and hydraulic index for recreational activities were developed for assessments in riverside areas to provide water quality and hydraulic information to the public. These novel indices consist of several river recr
Externí odkaz:
https://doaj.org/article/bd55e3b7f40f48f18a9be778ab0c9c3f
Publikováno v:
Remote Sensing, Vol 15, Iss 11, p 2803 (2023)
Passive remote sensing is a practical and widely used method for bathymetry mapping in shallow rivers. However, the accuracy of this approach is limited because of different riverbed types; therefore, it is important to classify the riverbed types fo
Externí odkaz:
https://doaj.org/article/295b0b53823645798aa7d56f9f9047d6
Publikováno v:
Water, Vol 15, Iss 9, p 1702 (2023)
One-dimensional solute transport modeling is fundamental to enhance understanding of river mixing mechanisms, and is useful in predicting solute concentration variation and fate in rivers. Motivated by the need of more adaptive and efficient model, a
Externí odkaz:
https://doaj.org/article/e42abc85ea784396b570a86afea63454
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019)
Abstract This study investigates a seasonally varying response of phytoplankton biomass to environmental factors in rivers. Artificial neural network (ANN) models incorporated with a clustering technique, the clustered ANN models, were employed to an
Externí odkaz:
https://doaj.org/article/f5b98a4a84f64bafac1d9b9ef18eef01
Autor:
Jaehyun Shin, Il Won Seo
Publikováno v:
Water, Vol 13, Iss 11, p 1486 (2021)
In order to analyze the shear effect of secondary currents on the flow structures in a meandering channel, this research developed a two-dimensional shallow water model, which included the dispersion stress term accounting for the shear effect in the
Externí odkaz:
https://doaj.org/article/19f93f9eeef14e8797d4d759321bfba9
Publikováno v:
Water, Vol 13, Iss 1, p 76 (2020)
A Transient Storage Model (TSM), which considers the storage exchange process that induces an abnormal mixing phenomenon, has been widely used to analyze solute transport in natural rivers. The primary step in applying TSM is a calibration of four ke
Externí odkaz:
https://doaj.org/article/e226e728f1a1408c8c1325a1f6a84cfa
Publikováno v:
The Scientific World Journal, Vol 2014 (2014)
In this study, a shallow water flow code was developed and tested against four benchmark problems of practical relevance. The results demonstrated that as the eddy viscosity increased, the velocity slope along the spanwise direction decreased, and th
Externí odkaz:
https://doaj.org/article/aa09446621ad491cb70c80d60f433b8c
Publikováno v:
Journal of the Korean Society of Hazard Mitigation. 22:351-361
Research on the effects of microplastics on water environments is being widely conducted because the discharge of microplastics into the ocean and freshwater systems is rapidly increasing. For the numerical simulation of the transport and diffusion o