The phrase "a certain depth in" is correct and usable in written English.
It can be used when discussing a specific level or degree of something, often in a metaphorical or abstract sense.
Example: "The artist's work reveals a certain depth in emotion that resonates with the audience."
Alternatives: "a specific level of" or "a particular degree of".
Wetting of grain boundaries appears only up to a certain depth in the reaction zone.
Grad student Karen Osborn (right) prepares to trawl for marine organisms at a certain depth in the water column.
Two formation methods of nanoparticles distributed at a certain depth in a delta layer by negative ion implantation were investigated.
Below a certain depth in the ocean, the water becomes so cold and the pressure so high that there's no calcium carbonate left for shell-building organisms.
Target inactivation is the estimation of the dose required to inactivate bacteria to the target level at a certain depth in the product.
It describes a programme of experiments designed to measure the pressure at a certain depth in a soil mass, the surface of which is traversed by a number of different vehicles in a range of loading conditions.
After a certain depth, the improvement in learning of features by the DNN models starts plateauing.
Imran Ahmed of the New Musical Express enjoyed "genius single 'AM to PM'", and praised the tracks "Got to Have You" and "When You Look at Me". Ahmed guessed that "beneath the froth, there's a certain depth of soul" in Milian, and thought "Get Away" had similar excellent results to her previous collaboration with Ja Rule, "Between Me and You".
Jesse's shortcomings (he drinks a bit, is easily manipulated by women and has a tendency to use his fists) gave a certain depth to his character in previous outings as the new chief of police in a tiny New England coastal town called Paradise.
In a certain depth, the bigger the air inlet velocity is, the higher the solid matrix dimensionless temperature is.
