Mixed Layer Depth Distributions from SVSTD Data.

Molinelli, Eugene; Donelson, John; Lilly, Linda

Mixed Layer Depth Distributions from SVSTD Data.

Active / Technical Report | Accession Number: ADA105669 |

Abstract:

Mixed layer depths defined in terms of each of four parameters temperature, sound speed, density and stability are determined for an area in the northern North Atlantic. The distributions of the mixed layer depth are broken down by season spring, summer and fall and by area Rockall Trough, Iceland Flank, Iceland-Faeroe Front. It is found that seasonal fluctuations in values of mixed layer depth are in excess of 40 meters fall deeper than summer. Variation in the values of mixed layer depth by area are only about 10 m but are also significant. The Iceland Flank mixed layers are deeper than the Rockall Trough or the Iceland Faeroe Frontal Zone mixed layers. The stability definition is found to be faulty in its present form and an increase in the significant peak criteria from 2 to 3 cycles per hour is suggested. The Iceland-Faeroe Frontal Zone has greater deviation in MLDs which affect the different definitions of MLD in a complex manner. Author

Author(s):

Molinelli, Eugene ; Donelson, John ; Lilly, Linda

Author Organization(s):

SCIENCE APPLICATIONS INC MCLEAN VA

Descriptive Note:

Technical rept. 24 Jun-22 Sep 80,

Pagination:

0114

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

SAI-81-260-WA, NOO-TR-271

Contract/Grant Number(s):

N68463-80-C-0035

Monitor Series:

TR-271

Subject Terms

Joint Capability Areas:

JCA_5_Command and Control; JCA_5.3_Planning; JCA_8.2.5_Strengthen Global Defense Posture; JCA_8.2_Shape; JCA_8_Building Partnerships

Modernization Areas:

Fully Networked C3

Communities of Interest:

Ground and Sea Platforms

Descriptor(s):

*UNDERWATER ACOUSTICS, *SEA WATER, DENSITY, TEMPERATURE, STABILITY, OCEAN SURFACE, DEPTH, OCEANOGRAPHIC DATA, SEASONAL VARIATIONS, ACOUSTIC VELOCITY, STRATIFICATION, NORTH ATLANTIC OCEAN, OCEAN RIDGES, ICELAND, FAROE ISLANDS, SUBMARINE TROUGHS

Field(s)/Group(s):

Physical and Dynamic Oceanography, Acoustics

Keyword(s):

*Mixed layers(Marine), Rockall trough, Iceland flank

Report Date:

1981 Apr 01