OBSERVATIONS OF THE DEEP SCATTERING LAYER IN THE MEDITERRANEAN.

Contrary to previous general beliefs, the Deep Scattering Layers (DSL) of the Mediterranean appear weak but well developed, and comparable to the DSL of the Atlantic and the Pacific. The midday depth of the upper edge of the DSL appears to be between 280 and 310 m, which is about 60 m deeper than th...

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Bibliographic Details
Main Authors: Frassetto, R., Croce, N. Della
Other Authors: SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)
Format: Text
Language:English
Published: 1965
Subjects:
Physical and Dynamic Oceanography
Acoustic Detection and Detectors
*MEDITERRANEAN SEA)
(*ECHO RANGING
MEDITERRANEAN SEA)
(*OCEANOGRAPHIC DATA
DENSITY
DIURNAL VARIATIONS
ECHO RANGING
DETECTION
PLANKTON
SCATTERING
MARINE BIOLOGICAL NOISE
SEASONAL VARIATIONS
Pacific
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/AD0477106
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0477106
Description
Summary:Contrary to previous general beliefs, the Deep Scattering Layers (DSL) of the Mediterranean appear weak but well developed, and comparable to the DSL of the Atlantic and the Pacific. The midday depth of the upper edge of the DSL appears to be between 280 and 310 m, which is about 60 m deeper than the one found in the Eastern North Atlantic. This layer can be as thick as 100 m and is often divided. A second layer is frequently recorded below 380-420 m. These depths appear to be 35-50 m deeper in the southeastern Mediterranean than in the northwestern (difference in latitude about 7 degrees). The sunset and sunrise migrations show up to three groups migrating vertically in sequence and at different rates. (Author) Published in Bull Inst. Oceanogr, Monoco, 65:1344, pp1-16, 1965.

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