Shadden, Shawn C. and Lekien, Francois and Paduan, Jeffrey D. and Chavez, Francisco P. and Marsden, Jerrold E. (2009) The correlation between surface drifters and coherent structures based on high-frequency radar data in Monterey Bay. Deep-Sea Research. Part II, Topical Studies in Oceanography, 56 (3-5). pp. 161-172. ISSN 0967-0645 http://resolver.caltech.edu/CaltechAUTHORS:20090827-100634927
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This paper investigates the transport structure of surface currents around the Monterey Bay, CA region. Currents measured by radar stations around Monterey Bay indicate the presence of strong, spatial and temporal, nonlinear patterns. To understand the geometry of the flow in the bay, Lagrangian coherent structures (LCS) are computed. These structures are mobile separatrices that divide the flow into regions of qualitatively different dynamics. They provide direct information about the flow structure but are geometrically simpler than particle trajectories themselves. The LCS patterns were used to reveal the mesoscale flow conditions observed during the 2003 Autonomous Ocean Sampling Network (AOSN-II) experiment. Drifter paths from the AOSN experiment were compared to the patterns induced by the LCS computed from high-frequency radar data. We verify that the fate of the drifters can be better characterized based on the LCS than direct interpretation of the current data. This property can be exploited to optimize drifter deployment.
|Additional Information:||© 2008 Elsevier Ltd. Accepted 16 August 2008. Available online 26 September 2008. The research in this paper was supported in part by the ASAP MURI project, ONR-MURI Contract N00014-04-1-0534.|
|Subject Keywords:||Lagrangian coherent structures; Aperiodic flows; Chaotic transport; Lyapunov exponents; Drifters; Coastal radar|
|Official Citation:||Shawn C. Shadden, Francois Lekien, Jeffrey D. Paduan, Francisco P. Chavez, Jerrold E. Marsden, The correlation between surface drifters and coherent structures based on high-frequency radar data in Monterey Bay, Deep Sea Research Part II: Topical Studies in Oceanography, Volume 56, Issues 3-5, AOSN II: The Science and Technology of an Autonomous Ocean Sampling Network, February 2009, Pages 161-172, ISSN 0967-0645, DOI: 10.1016/j.dsr2.2008.08.008. (http://www.sciencedirect.com/science/article/B6VGC-4TJ1HH1-3/2/9f098e9e2684e5cd8f53e69ab3c59c26)|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||14 Sep 2009 16:56|
|Last Modified:||26 Dec 2012 11:15|
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