Relationship between the sonic layer depth and mixed layer depth identified from U.S. Navy sea glider data
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Authors
Villarreal, Vance A.
Subjects
mixed layer depth (MLD)
sonic layer depth (SLD)
difference method
gradient method
curvature method
max angle method.
sonic layer depth (SLD)
difference method
gradient method
curvature method
max angle method.
Advisors
Chu, Peter C.
Date of Issue
2014-09
Date
Sep-14
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
The mixed layer depth (MLD) represents the upper ocean mixing, and the sonic layer depth (SLD) reveals the capacity of the upper ocean to trap acoustic energy and create a surface duct. A set of sea glider date from the Naval Oceanographic Office is used to identify the MLD and SLD at five locations. The maximum angle method is found to be the best among 17 existing MLD determination schemes of the four major methods (difference, gradient, curvature, and maximum angle). The maximum angle method is also found better than the currently used maximum value method in determining SLD. The optimally determined MLD and SLD by the maximum angle method from theNavy's glider data shows that one can swiftly, accurately, and objectively determine the MLD and SLD for operations in seas around the world.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.