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Surface Flow Structure of the Gulf Stream from Composite Imagery and Satellite-tracked Drifters : Volume 1, Issue 1 (30/11/-0001)

By Mullen, C. P.

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Book Id: WPLBN0004019521
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Surface Flow Structure of the Gulf Stream from Composite Imagery and Satellite-tracked Drifters : Volume 1, Issue 1 (30/11/-0001)  
Author: Mullen, C. P.
Volume: Vol. 1, Issue 1
Language: English
Subject: Science, Nonlinear, Processes
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
-0001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Kirwan, Jr, A. D., & Mullen, C. P. (-0001). Surface Flow Structure of the Gulf Stream from Composite Imagery and Satellite-tracked Drifters : Volume 1, Issue 1 (30/11/-0001). Retrieved from http://www.ebooklibrary.org/


Description
Description: Center for Coastal Physical Oceanography, Old Dominion University, Norfolk, Virginia, 23529 USA. A unique set of coutemporaneous satellite-tracked drifters and five-day composite Advanced Very High Resolution Radionmeter (AVHRR) satellite imagery of the North Atlantic has been analyzed to examine the surface flow structure of the Gulf Stream. The study region was divided into two sections, greater than 37° N and less than 37° N, in order to answer the question of geographic variability. Fractal and spectral analyses methods were applied to the data. Fractal analysis of the Lagrangian trajectories showed a fractal dimension of 1.21 + 0.02 with a scaling range of 83 - 343 km. The fractal dimension of the temperature fronts of the composite imagery is similar for the two regions with D = 1.11 + 0.01 over a scaling range of 4 - 44 km. Spectral analysis also reports a fairly consistent value for the spectral slope and its scaling range. Therefore, we conclude there is no geographic variability in the data set.
A suitable scaling range for this contemporaneous data set is 80 - 200 km which is consistent with the expected physical conditions in the region. Finally, we address the idea of using five-day composite imagery to infer the surface flow of the Gulf Stream. Close analyses of the composite thermal fronts and the Lagrangian drifter trajectories show that the former is not a good indicator of the latter.


Summary
Surface flow structure of the Gulf Stream from composite imagery and satellite-tracked drifters

 

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