한국 남부해역의 수온약층 추출 알고리즘 개발
- 한국 남부해역의 수온약층 추출 알고리즘 개발
- Development of Algorithms for Extracting Thermocline Parameters in the South Sea of Korea
- 윤동영; 최현우
- KIOST Author(s)
- Choi, Hyun Woo(최현우)
- 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 ΔT (oC/m), agreement and reliability were 87% and 0.74 respectively, in the conditions of maximum ΔT ≥ 0.5 and surface and bottom layers ΔT < |0.2|. 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.
- Ocean and Polar Research, v.34, no.2, pp.265 - 273, 2012
- thermocline detection; thermocline parameter extraction; differential hyperbolic tangent; Kappa statistic; South Sea of Korea
- Related Researcher
Spatial information,Marine bigdata,Marine index,해양공간정보,해양빅데이터,해양지수개발
- Files in This Item:
There are no files associated with this item.
Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.