IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : A stream order network model for predicting basin-wide distribution of stream temperatures
A stream order network model for predicting basin-wide distribution of stream temperatures
Author : Hitoshi Miyamoto, Kohji Michioku, Hiroshi Maeba and Kazuya Nakayama
A basin-wide distribution model was developed for stream temperature prediction along a river network. In order to express the channel segment connection from sources to the river mouth, the model used Horton's geomorphologic laws for channel networks and river basins with stream ordering systems. Within the each stream link, a theoretical solution derived from a thermal energy equation was used to predict longitudinal variation of stream temperatures. The model furthermore took into account solar radiation reduction due both to riparian vegetation and basin topography, as well as thermal advection from lateral land-uses. Comparison of the model prediction with basin observation in the Ibo River of Japan showed very good agreement for the thermal structure along the river network for almost all seasons, excluding an autumnal month in which the thermal budget on the water surface was just changed from positive to negative at the moment.
File Size : 352,024 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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