sub-surface

British  

noun

1. the layer just below the surface of water, the earth, etc

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Example Sentences

"You can place material targets into nanometer-scale proximity of a diamond surface, thus bringing them really close to sub-surface NV centers," Jayich explained.

From Science Daily

The AI model is named Essa, which is short for entrances to sub-surface areas and a nod to the Cornish name of Mr Le Corre's hometown, Saltash.

From BBC

Ruoff elaborates, "The presence of such a high concentration of carbon 'dissolved' in a gallium-rich alloy could be unexpected, as carbon is reported to be not soluble in gallium. This may explain why this region is amorphous -- while all other regions of the solidified liquid metal are crystalline. This sub-surface region is where our diamonds nucleate and grow and we thus focused on it."

From Science Daily

As the oceans rise, that sub-surface saltwater pushes farther inland, and wells that have delivered pure water for generations can suddenly turn salty.

From Science Daily

Siegel compared this to humans intentionally annihilating a group of single-celled organisms in Europa's sub-surface oceans.

From Salon