"fluctuations over time" is a correct and usable phrase in written English.
You could use it when discussing changes in a certain variable over a period of time. For example, "The stock market experienced many fluctuations over time, leading to a decrease in overall prices."
That allows you to track fluctuations over time.
In all, this method achieves a parsimonious way to determine groundwater storage fluctuations over time with formal confidence bounds.
Analog filters are limited in their performance and are susceptible to passive component fluctuations over time and temperature.
Such information is easier to obtain than data on population fluctuations over time, making it potentially more useful, according to the researchers.
Instead, it is a parsimonious means of analyzing how variability in precipitation interacts with multi-year water management decisions that ultimately determine groundwater storage fluctuations over time.
The simulated traffic situations resulted in emotional fluctuations over time, with a positive correlation between the magnitude of negative emotions and the number of unsafe behaviors.
Our hormones affect 150 of our essential bodily functions, and their fluctuations over time are inextricably linked to the biological systems that control our energy levels, memory, brain waves, vitamin retention, metabolism, the acuity of our senses and more.
Intelligence, as measured by IQ, is often thought to be stable across life, but Cathy Price and colleagues investigate whether individual components are stable across adolescence, and whether fluctuations over time correlate to structural and functional brain changes.
Although 'injury-related information processing' has been identified as an important element of athletes' psychological reactions to injury, knowledge of the mental representation of athletic injuries and their fluctuations over time is still rather limited.
This empiric tool for architects and urban planners analyses, predicts and quantifies traffic fluctuations over time, and define the number of pedestrians, individual traffic and public transport in each area and street of a city.
Modeling traffic flow fluctuations over time reflects two basic zones: the increasing demand zone that terminates approximately when the maximum flow is attained, and the oscillations zone that reflects the fluctuations of flow until its stabilization.
