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2020 Vol.42, Issue 2 Preview Page

Article

Estimation of Effective Range of HFR Data and Analysis of M2 Tidal Current Characteristics in the Jeju Strait

제주해협 HFR 자료의 유효 범위 산정과 M2 조류 특성 분석

Kyung-Hee Oh1*
,
Seok Lee1
,
Joonseong Park2
,
Kyu-Min Song1
,
Dawoon Jung1
오 경희1*
,
이 석1
,
박 준성2
,
송 규민1
,
정 다운1
1Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Korea
2Instrumental Development and Management Center, Korea Institute of Ocean Science & Technology, Busan 49111, Korea
1한국해양과학기술원 해양순환·기후연구센터, (49111) 부산광역시 영도구 해양로 385
2한국해양과학기술원 해양기기개발·운영센터, (49111) 부산광역시 영도구 해양로 385
*Corresponding Author
30 June 2020. pp. 115-131
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Abstract

The effective range of surface current data observed by high-frequency radar (HFR) operated in the northern coastal area of Jeju Island by Korea Institute of Ocean Science and Technology was estimated and the distribution and variability of the M2 tidal current of the Jeju Strait was analyzed. To evaluate the HFR data, the M2 tidal current ​​corrected from 25 hours current data observed by the Korea Hydrographic and Oceanographic Agency (KHOA) was compared with the M2 tidal current in the Jeju Strait analyzed from the surface currents of HFR. The reliability of HFR data was confirmed by analyzing the characteristics of the tide components of these two data sets, and the effective range of HFR data was estimated through temporal and spatial analysis. The observation periods of HFR used in the analysis were from 2012 to 2014, and it was confirmed that there is a difference in the effective range of HFR data according to the observation time. During the analysis periods, the difference between the M2 current ellipses from the data of KHOA and the HFR was greater in the eastern than in the western part of the Jeju Strait, and represented a high reliability in the western and central parts of the Jeju Strait. The tidal current of the Jeju Strait analyzed using the HFR data revealed a seasonal variability a relatively weak in summer and a strong in winter, about a 17% fluctuations between the summer and winter based on the length of the semi-major axis of tidal ellipse. Appraisals and results of regarding the characteristics and seasonal variability of the M2 tidal current in the Jeju Strait using HFR data have not been previously reported, so the results of this study are considered meaningful.

Keywords
high-frequency radar
Jeju Strait
effective range and reliability
seasonal variation
M2 tidal current
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Information
  • Publisher :Korea Institute of Ocean Science and Technology
  • Publisher(Ko) :한국해양과학기술원
  • Journal Title :Ocean and Polar Research
  • Journal Title(Ko) :Ocean and Polar Research
  • Volume : 42
  • No :2
  • Pages :115-131
  • Received Date : 2020-02-03
  • Revised Date : 2020-05-11
  • Accepted Date : 2020-05-25
  • DOI :https://doi.org/10.4217/OPR.2020.42.2.115
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