The phrase "a long timescale" is correct and usable in written English.
It can be used when discussing durations or periods of time that are extended or significant in length, often in scientific or planning contexts.
Example: "The project will require a long timescale to achieve the desired results, as we need to consider various factors and stages of development."
Alternatives: "an extended timeframe" or "a lengthy duration".
That allows them to be managed on a long timescale, which is the essence of sustainability.
Such a long timescale phenomenon represents more than an order of magnitude disparity with the known integration time of the visual system4.
Furthermore, a recent analysis of the seismic noise49 has discovered a long timescale (2011 2014) decrease of seismic wave velocities in the central part of CFc that is likely related to heating and pressurization.
As a result, the dataset could be used as a foundation to build a richer record of urban population values through history, creating systematic, global population data to measure urban growth at a long timescale.
This is because the argument assumes a Solar System much like that of the present day with the one exception of a circumjovian disk which is then allowed to dissipate on a long timescale (106 107yr).
Since it is not easy to carry out experiments that can simulate deep geological repository conditions over a long timescale, scientists often study natural analogues to gain confidence in the subject.
Amnioserosa cell area measurements can be decomposed into two parts, a long-timescale area trend around which oscillations occur and which decreases over time due to net area contraction, and the oscillatory part (Fig. 1 e).
Economic history viewed on a very long timescale tells us that innovation and population size/density are highly correlated.
And it's dangerous, more generally, to predict future results by past performance: view things on a sufficiently long timescale, and it becomes impossible to tell whether the progress the New Optimists celebrate is evidence of history's steady upward trajectory, or just a blip.
