The phrase "a gentle gradient" is correct and usable in written English.
It can be used to describe a gradual change in slope or intensity, often in contexts related to design, art, or natural landscapes.
Example: "The artist chose a gentle gradient of colors to create a soothing atmosphere in the painting."
Alternatives: "a soft transition" or "a mild slope".
It has a gentle gradient and carries a heavy load of ash from the volcanic highlands.
The land surface slopes gently to the sea, falling some 52 feet from Cairo in a gentle gradient.
Since I suffer from severe acrophobia, I was alarmed at the prospect of getting up there, but it turned out that a good road with a gentle gradient led directly to the entrance.
Joseph Bazalgette, who built London's sewers in the 1860s, prescribed a gentle gradient to carry water and sewerage – nothing like the noxious cocktail of chip grease and sanitary napkins we pour into them today.
Daniel's life is dull, or as he puts it, "on a gentle gradient moving quietly upward," which gives him the ideal vantage point from which to observe Lacey's fascinating and chaotic one.
In contrast, the P-V S profile of SA2 is convex upward with a gentle gradient from 10 to around 100 GPa, which is similar to that observed in MgSiO3 glass (Murakami and Bass 2011).
Their steep northern face rises above 8,000 feet (2,450 m) and overlooks the Făgăraş Depression, through which flows the Olt River over a gentler gradient south to the Carpathian foothills.
The results also demonstrated that free SN38 had more cytotoxicity effect with a gentler gradient after 72 h, which may be due to the rapid rate of free SN38 hydrolysis and ABCG2 activity pumping out free SN38, while SN38-PEG-PLGA-Ver had the most cytotoxicity effect at 96 h.
After Iron Bridge, the character of the Way changes with the steeper hills of the earlier sections giving way to a gentler gradient that meanders between low hills.
Route 1 is the most direct and contains abundant sediment accumulations once the deeper part of the cave is accessed (i.e., ∼20 m into the cave); route 2 has a gentler gradient, but is longer and involves a descent along narrow fissures largely devoid of sediment accumulations.
Wieczorek et al. (2007) indicated that an upslope drainage area with a gentler slope gradient triggered more shallow landslides because drainage is slower than on steeper slopes.
