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Development of Algorithms for Extracting Thermocline Parameters in the South Sea of Korea
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  • Journal title : Ocean and Polar Research
  • Volume 34, Issue 2,  2012, pp.265-273
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2012.34.2.265
 Title & Authors
Development of Algorithms for Extracting Thermocline Parameters in the South Sea of Korea
Yoon, Dong-Young; Choi, Hyun-Woo;
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A new algorithm was developed, not only to detect the existence of a thermocline, but also to extract the thermocline parameters (such as thermocline thickness, mixed layer thickness, maximum temperature gradient, and temperature difference of thermocline), using the vertical profile of water temperature. According to Kappa analysis, in order to find adequate threshold values of vertical water temperature gradients (), agreement and reliability were 87% and 0.74 respectively, in the conditions of maximum and surface and bottom layers <. Also, three different kinds of methods, viz. 1. Gradient method, 2. Hyperbolic tangent method, and 3. Differential hyperbolic tangent method, were tested to extract the key parameters of a thermocline. Comparing the results of three different methods, the differential hyperbolic tangent method was the most appropriate to extract the start and end point of a thermocline curve.
thermocline detection;thermocline parameter extraction;differential hyperbolic tangent;Kappa statistic;South Sea of Korea;
 Cited by
제주 남부해역 수온 수직구조의 공간분포 특성 파악,윤동영;최현우;

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