A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Simulation of river water temperatures during various hydro-peaking regimes
Hydro-peaking is a type of hydropower operation characterized by rapid and frequent changes in flow, possibly also leading to similar changes in water temperature – http://www.nrk.no/tures (‘thermo-peaking’). This study examines water temperature variations caused by the present hydro-peaking regime in Nidelva River (Norway), and the impacts that future changes in the operations of the hydropower system might introduce. The simulated future scenarios indicate that only limited changes are expected to happen compared to the present situation, measured as changes in accumulated degree-days. The model simulations predict a reduction in the range of 50 degree-days for two of the scenarios and an increase in approximately 40 degree-days for the third scenario. These results are further transformed into changes in salmon egg development and time of hatching, which corresponds to a few days delay in hatching in all three scenarios, and also a slight delay in swim-up for two of the three scenarios.
Simulation of river water temperatures during various hydro-peaking regimes
Hydro-peaking is a type of hydropower operation characterized by rapid and frequent changes in flow, possibly also leading to similar changes in water temperature – http://www.nrk.no/tures (‘thermo-peaking’). This study examines water temperature variations caused by the present hydro-peaking regime in Nidelva River (Norway), and the impacts that future changes in the operations of the hydropower system might introduce. The simulated future scenarios indicate that only limited changes are expected to happen compared to the present situation, measured as changes in accumulated degree-days. The model simulations predict a reduction in the range of 50 degree-days for two of the scenarios and an increase in approximately 40 degree-days for the third scenario. These results are further transformed into changes in salmon egg development and time of hatching, which corresponds to a few days delay in hatching in all three scenarios, and also a slight delay in swim-up for two of the three scenarios.
Simulation of river water temperatures during various hydro-peaking regimes
Bakken, Tor Haakon (author) / King, Tyler (author) / Alfredsen, Knut (author)
2016-01-02
13 pages
Article (Journal)
Electronic Resource
English
ENVIRONMENT - Ecological impacts of hydro peaking in rivers
| Online Contents | 2001
HYDROPOWER AND DAMS IN NORWAY - Environmental impacts of hydro peaking in reservoirs
| Online Contents | 2001
Online Contents | 1996
The role of hydro-peaking in freeze-up consolidation events on regulated rivers
| Online Contents | 2012