“deep-scattering layer”的意思、由来-百科全书

deep-scattering layer

oceanography

horizontal zone of living organisms, usually schools of fish, occurring below the surface in many ocean areas, so called because the layer scatters or reflects sound waves, causing echoes in depth sounders. Originally mistaken by some for the ocean bottom, the deep-scattering layer was later observed to rise toward the surface in the evening and to sink again at dawn, thus leading to a theory that it was composed of living organisms. Net tows through the layer and direct observation from submersibles confirmed the theory.

词条	deep-scattering layer
释义	deep-scattering layer oceanography horizontal zone of living organisms, usually schools of fish, occurring below the surface in many ocean areas, so called because the layer scatters or reflects sound waves, causing echoes in depth sounders. Originally mistaken by some for the ocean bottom, the deep-scattering layer was later observed to rise toward the surface in the evening and to sink again at dawn, thus leading to a theory that it was composed of living organisms. Net tows through the layer and direct observation from submersibles confirmed the theory.
随便看	cobweb cycle Cobán coca Coca-Cola Company, The cocaine Cocceius, Johannes coccidioidomycosis coccidiosis coccidium coccolith coccus coccygeus muscle coccyx Cochabamba Cochet, Henri Cochin, Charles-Nicolas, The Younger Cochinchina cochineal Cochise Cochise culture Cochlaeus, Johannes Cochlospermum Cochran, Eddie Cochran, Jacqueline Cochran, Johnnie L., Jr.