한국 남부해역의 수온약층 추출 알고리즘 개발 SCOPUS KCI

Title
한국 남부해역의 수온약층 추출 알고리즘 개발
Alternative Title
Development of Algorithms for Extracting Thermocline Parameters in the South Sea of Korea
Author(s)
윤동영; 최현우
KIOST Author(s)
Choi, Hyun Woo(최현우)
Publication Year
2012
Abstract
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.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3733
DOI
10.4217/OPR.2012.34.2.265
Bibliographic Citation
Ocean and Polar Research, v.34, no.2, pp.265 - 273, 2012
Keywords
thermocline detection; thermocline parameter extraction; differential hyperbolic tangent; Kappa statistic; South Sea of Korea
Type
Article
Language
Korean
Related Researcher
Research Interests

Spatial information,Marine bigdata,Marine index,해양공간정보,해양빅데이터,해양지수개발

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