해수면 흐름 및 프론트 검출을 위한 천리안해양관측위성의 활용

Title
해수면 흐름 및 프론트 검출을 위한 천리안해양관측위성의 활용
Alternative Title
Application of the GOCI to estimates of ocean surface currents and fronts
Author(s)
양현; 최종국; 박영제; 한희정
KIOST Author(s)
Yang, Hyun(양현)Choi, Jong Kuk(최종국)Park, Young Je(박영제)
Publication Year
2016-09-27
Abstract
The Geostationary Ocean Color Imager (GOCI) can be utilized to observe subtle changes in oceanic environments because it receives ocean color data around the Northeast Asia every hour, eight times a day. This study focused on 1) estimating ocean surface currents and 2) extracting ocean fronts, using GOCI. To estimate currents, the maximum cross correlation (MCC) based algorithm was proposed. The total suspended sediment (TSS) was used to approximately estimate semi-diurnal tidal currents in highly turbid coastal waters, and the chlorophyll concentration (chl) was employed for relatively clear waters. In the results, it was validated that the currents estimated by the proposed algorithm trace dynamic movements on the west coast of Korea and represent well the movements along boundaries where warm and cold seawaters mix in the East/Japan Sea. To extract fronts, we developed a histogram-based methodology. In order to validate oceanic changes in the coastal region which has extremely high turbidities, the fronts derived from TSS were used. On the other hand, the fronts derived from chl were exploited to investigate oceanic changes in the offshore which has relatively low turbidities. In the results deduced from the TSS front, statistics of semi-diurnal changes for the tide in the coastal region were approximately measured, and we could find out that the extracted fronts are quite relevant to the topographical characterisocean surface currents and 2) extracting ocean fronts, using GOCI. To estimate currents, the maximum cross correlation (MCC) based algorithm was proposed. The total suspended sediment (TSS) was used to approximately estimate semi-diurnal tidal currents in highly turbid coastal waters, and the chlorophyll concentration (chl) was employed for relatively clear waters. In the results, it was validated that the currents estimated by the proposed algorithm trace dynamic movements on the west coast of Korea and represent well the movements along boundaries where warm and cold seawaters mix in the East/Japan Sea. To extract fronts, we developed a histogram-based methodology. In order to validate oceanic changes in the coastal region which has extremely high turbidities, the fronts derived from TSS were used. On the other hand, the fronts derived from chl were exploited to investigate oceanic changes in the offshore which has relatively low turbidities. In the results deduced from the TSS front, statistics of semi-diurnal changes for the tide in the coastal region were approximately measured, and we could find out that the extracted fronts are quite relevant to the topographical characteris
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24595
Bibliographic Citation
International GOCI Symposium, pp.67, 2016
Publisher
Korea
Type
Conference
Language
English
Publisher
Korea
Related Researcher
Research Interests

GOCI-based PAR,Satellite-based Water Quality,Ocean color based Ecological Environment,GOCI 기반 PAR,위성활용 해수표층 수질,해색위성 기반 해수 생태환경

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