First observations of saturopeaking: Characteristics and implications.
Sci Total Environ
; 573: 1615-1621, 2016 Dec 15.
Article
in En
| MEDLINE
| ID: mdl-27707575
ABSTRACT
During the monitoring of total dissolved gas (TDG) saturation in the Vetlefjordelva River in western Norway in 2014-2015, characteristic waves of supersaturated water were discovered. These waves were significantly correlated with hydropower operation, which was run by hydropeaking (R2=0.82, p<0.001). The TDG saturation varied between 99% and 108%, with a median of 105%. The term "saturopeaking" is introduced for these waves, defined as the artificial, rapid, periodic and frequent fluctuation of gas saturation caused by hydropeaking. Hydropeaking is recognized as hydropower operation that rapidly fluctuates according to the electricity market demand. Though the observed TDG saturation levels were moderate and not likely to cause acute effects on biota, we expect that the observed saturopeaking may have significant ecological impacts in general, especially in cases with TDG saturation levels >110^% which is considered as potentially lethal for fish in rivers.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Power Plants
/
Water Movements
/
Rivers
/
Gases
Country/Region as subject:
Europa
Language:
En
Journal:
Sci Total Environ
Year:
2016
Document type:
Article