The phrase "above this depth" is correct and usable in written English.
It can be used in contexts discussing measurements, limits, or levels, often in scientific or technical writing.
Example: "The pressure readings were consistent for all samples taken above this depth."
Alternatives: "at a greater depth" or "beyond this depth".
Above this depth is the euphotic zone, but below it in the aphotic zone phytoplankton the lowest level in the ecological system of a lake cannot survive unless the organisms are capable of vertical migration.
The temperature gradient below the depth of 3000 m is twice as much as one above this depth.
The bedrock layer was found to have a low saturated hydraulic conductivity (<5 mm h−1), which means that the schist bedrock is poorly weathered and that saturated area can be generated above this depth, as it was observed.
A zero-flux plane was apparent at a depth of approximately 50 cm below the peat surface at the basin peatland; shallow groundwater above this depth moved upward towards the surface via evapotranspiration.
If the base of the lithosphere happens to exist just above this depth, then any further mantle upwelling and melting will be prevented, and the near-solidus melt will segregate and ascend into the lithosphere.
Above this depth, the porosities of the sand reservoirs are generally above 12%%; the permeabilities are higher than 1 mD; and the pore throat radii are larger than 2 μm.
NIRS is capable of interrogating tissue samples at a depth of approximately one-quarter to one-half the interoptode distance (5 cm in the present study), which limits the depth of near infrared (NIR) light penetration to roughly 1.25 to 2.5 cm, although a banana-shaped region of sensitivity extends both above and below this depth [ 20, 21].
Geophysical evidence supports the existence of subducted seamounts at this depth as detailed above.
At this depth, the temperature is above the critical temperature, which for hydrogen is only 33 K (see hydrogen).
It is observed that the average bottomhole pressure of the wells is normal above the depth of 3000 m and geopressured below this depth.
Below this depth, net oxygen consumption due to respiration had a magnitude equal to 15% that of the total oxygen production above the compensation depth.
