The phrase "at a depth below" is correct and usable in written English.
It can be used when describing a specific measurement or location that is situated beneath a certain reference point, often in contexts related to geology, oceanography, or construction.
Example: "The underwater survey revealed a shipwreck at a depth below 200 meters."
Alternatives: "beneath" or "underneath".
In Japan, hydrates in the Sea of Kumano are found about 30km offshore in about 100 metres of water and at a depth below the seabed of 200 metres, making it difficult to mine the unstable hydrates.
Magma is thought to be generated within the plastic asthenosphere (the layer of partially molten rock underlying the Earth's crust) at a depth below about 60 kilometres (40 miles).
Site HR2 was located at a depth below the present calcite saturation horizon (CSH) in the ECS (~1600 m) (Fig. 6a).
A trough at a depth below 7.5 km was defined by the contour of the depth to the centroid of the basement.
A previous study showed that a B. thuringiensis population introduced on the surface of a soil by spraying six years before counting significantly decreased at a depth below 10 cm [ 30]; however, the density of natural B. cereus sl isolates at various depths was not investigated.
A floating foundation consists of boxlike rigid structures set at such a depth below ground that the weight of the soil removed to place it equals the weight of the building; thus, once the building is completed, the soil under it will bear the same weight it bore before excavation was begun.
In one spot of bright news, the swollen Brisbane River's peak was about three feet (one meter) lower than predicted, at a depth slightly below that of 1974 floods that swept the city.
This was placed on its side, and a final cut was made at a depth immediately below the subseptal organ (Organum subseptale) and parallel to the basal surface of the hypothalamus.
The image in Fig. 6A was acquired at a depth ~50µm below the tissue surface and shows the transition between the cornea and the bulbar conjunctiva in the limbus (black arrow).
Theoretically, each hydrocarbon basin may have a hydrocarbon accumulation threshold at a certain depth, below which hydrocarbon accumulations do not exist.
The drilling team was trying to hit a well casing less than 10 inches in diameter at a depth 1.6 miles below the seabed, according to testimony this spring before an Australian government commission of inquiry.
